2024-03-28T19:19:10Z
https://zenodo.org/oai2d
oai:zenodo.org:1287279
2020-01-20T17:20:14Z
user-rdc2mt
user-eu
Zhu, Yue
Wu, Jiande
Wang, Ruichi
Lin, Zhengyu
He, Xiangning
2018-05-24
<p>In Photovoltaic (PV) system, dc-dc power op-timizer (DCPO) is an option to maximize output power. At the same time, data links among DCPOs are often required for system monitoring and controlling. This paper pro-poses a novel power line communication (PLC) method for the DCPOs, in which the data of a DCPO is modulated into the control loop of power converter, and then transmitted through the series-connected dc power line to other DCPOs. In the process of communication, differential phase shift keying (DPSK) modulation and discrete Fourier transformation (DFT) demodulation are employed. To ana-lyze the quality of communication, the communication model of the system is built, based on small-signal model. Furthermore, the noises of the system, including switch-ing, maximum power point tracking (MPPT) and additive white Gaussian noise (AWGN), are discussed and meas-ured to evaluate the signal-to-noise ratio (SNR). At last, an experimental system including 6 DCPOs is established and tested, which verifies the feasibility and effectiveness of the proposed method.</p>
https://doi.org/10.5281/zenodo.1287279
oai:zenodo.org:1287279
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.1287278
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
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IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, (2018-05-24)
Photovoltaic (PV) system, Power line communication, DC power optimizer
Embedding Power Line Communication in Photovoltaic Optimizer by Modulating Data in Power Control Loop
info:eu-repo/semantics/article
oai:zenodo.org:3233971
2020-01-20T17:17:12Z
user-rdc2mt
user-eu
Li, Fulong
Lin, Zhengyu
Chen, Alian
Wu, Jiande
2019-05-28
<p>This paper investigates the detailed elements of a DC microgrid that might cause instability, and proposes a stabilizing guidance based on the passive stability criterion. For illustration purpose, the terminal output impedance model of a source side power converter under double loop with droop control is built, and its frequency characteristics are analyzed. It is found that the instant high power absorption from the microgrid might make the source side power converter’s output to oscillate. The details of how the circuit and control elements in the source side impact the terminal impedance are illustrated. This paper shows that the stability of plug and play performance of DC microgrid can be guaranteed with the proposed enstabilization methods. A Matlab/Simulink model is used to validate the analysis.</p>
https://doi.org/10.5281/zenodo.3233971
oai:zenodo.org:3233971
eng
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.3233970
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
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ICDCM, The 3rd IEEE International Conference on DC Microgrids, Japan, 20-23 May 2019
DC microgrids
output impedance
passive stability criterion
stability
Terminal Capacitor Compensation Based Stability Design for DC Microgrids
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:3585719
2020-01-20T14:49:36Z
user-rdc2mt
user-eu
Jintao Lei
Zian Qin
Wuhua Li
Pavol Bauer
Xiangning He
2019-11-11
<p>Nowadays Shunt Active Power Filter (SAPF) system still suffers from stability issue which heavily detect its performance. In this paper, an improved system level model is proposed to investigate the coupling effect that will cause the system level instability. This model describes the coupling effect with an additional output admittance and shows system stability more directly. In order to investigate the correctness of the proposed method, a grid including the SAPF and a non-linear load is modelled with both conventional approach and proposed modeling method. Simulations are carried out with the same parameters. Results show that the instability of the grid current observed in the simulation results is not reflected in the stability analysis based on the conventional model. On the other hand, the stability analysis with the new model matches the simulation results very well. Also, further verification is made by a frequency-sweep result, which proves the accuracy of proposed model.</p>
https://doi.org/10.5281/zenodo.3585719
oai:zenodo.org:3585719
eng
Zenodo
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https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.3585718
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eGrid 2019, 4th IEEE Workshop on the Electronic Grid, Xiamen, China, 11-14 Nov 2019
SAPF
system stability
modelling
output admittance coupling
Modelling of Output Admittance Coupling Between Shunt Active Power Filters and Non-linear Loads
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:3623917
2020-01-24T19:21:33Z
user-rdc2mt
Chen, Guipeng
Liu, Yuwei
Qing, Xinlin
Ma, Mingyao
Lin, Zhengyu
2020-01-15
<p>Single-inductor multi-input multi-output (SI-MIMO) dc-dc converters are attractive in the engineering applications due to the advantage of high power density and low cost. In order to explore as many as possible SI-MIMO topologies, this paper proposes a simple and effective topology derivation principle which only requires three steps. Firstly, three basic cells consisting of a single inductor and multiple sets of unidirectional switches as well as inputs/outputs are proposed. Secondly, integrate them with the inductor branch of the typical single-input single-output converters. Finally, implement the topology simplification by removing unnecessary switches/diodes. Based on the proposed principle, a large number of SI-MIMO topologies are derived from buck, boost, buck-boost and non-inverting buck-boost converters in the paper. With more topology choices having different performance characteristics, it is very beneficial for engineers to gain an optimized design that a preferred one can be selected out after comprehensive comparison. As an example, topology comparison and selection among a family of single-inductor single-input dual-output converters is also conducted in the paper. Besides, performance analysis, design considerations and simulation/experiment results of the selected optimum topology are demonstrated in detail to verify its advantages.</p>
https://doi.org/10.1109/TIE.2020.2965490
oai:zenodo.org:3623917
eng
Zenodo
https://zenodo.org/communities/rdc2mt
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
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IEEE Transactions on Industrial Electronics, (2020-01-15)
Multi-input multi-output (MIMO)
Principle
Single-inductor
Topology derivation
Principle and Topology Derivation of Single-Inductor Multi-Input Multi-Output DC-DC Converters
info:eu-repo/semantics/article
oai:zenodo.org:4610207
2021-03-18T00:27:21Z
user-rdc2mt
user-eu
Guo, Hui
Shi, Tianling
Wang, Fei
Zhang, Lijun
Lin, Zhengyu
2021-02-16
<p>Different energy systems are generally planned and operated independently, which result in the low energy utilisation, weak self-healing ability, and low system reliability. Therefore, an adaptive clustering-based hierarchical layout optimisation method is proposed for a large-scale integrated energy system, considering energy balance, transmission losses and construction costs. First, an adaptive clustering partition method based on energy balance and load moments is proposed to determine the optimal location of energy hubs and to allocate each distributed generation and load to different energy hubs, forming multiple regional integrated energy systems adaptively. Then, the proposed hierarchical layout optimisation model is formulated as to find the modified minimum spanning tree of regional integrated energy system and multi-regional integrated energy systems respectively, to construct an economical and reliable interconnection network. Finally, the effectiveness of the optimisation model and strategy is verified by simulations.</p>
https://doi.org/10.1049/iet-rpg.2020.0105
oai:zenodo.org:4610207
eng
Zenodo
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IET Renewable Power Generation, (2021-02-16)
power distribution reliability
optimisation
distributed power generation
Adaptive clustering-based hierarchical layout optimisation for large-scale integrated energy systems
info:eu-repo/semantics/article
oai:zenodo.org:3906312
2020-06-24T22:18:22Z
user-rdc2mt
user-eu
Li, Fulong
Xu, Haoge
Lin, Zhengyu
2020-06-19
<p>Plug-and-Play (P&P) performance facilitates the modularity of DC microgrids. The realization of P&P operation relies on the control design of DC microgrids. Conventional control methods are normally designed for steady operation of a DC microgrid, neglecting or partially sacrifices the availability of P&P operations. Some bottom layer’s control designs such as droop control, from a hierarchical control scheme perspective for example, are inherently able to realize P&P operations. However, such methods have limitations in terms of power sharing accuracy. This paper proposes a control scheme that reconfigures hierarchical control and makes it more compatible for different P&P operation situations in DC microgrids. In this control scheme, Automatic Mater-Slave (AMS) control is implemented in the secondary control layer to automatically respond to those cases in the absence of communication or the failure of the master module. The proposed control scheme is validated by MATLAB/Simulink simulation.</p>
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
https://doi.org/10.5281/zenodo.3906312
oai:zenodo.org:3906312
eng
Zenodo
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https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.3906311
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ISIE 2020, 29th IEEE International Symposium on Industrial Electronics, online conference hosted in Delft, The Netherlands, 17-19 June 2020
battery storage
DC microgrids
droop control
master-slave control
plug-and-play
Multifunctional Control Design for Modular Plug-and-play Battery Storage in DC Microgrids
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:2574511
2020-01-20T17:10:22Z
user-rdc2mt
user-eu
Li, Fulong
Lin, Zhengyu
Qian, Zhongnan
Wu, Jiande
Jiang, Wei
2019-02-20
<p>Hierarchical control schemes have been commonly employed in DC microgrid controls, which combine local control, DC bus voltage coordination and communication links to guarantee smart operation of DC microgrids. Conventional DC bus voltage regulation cannot conduct signal exchange. Therefore, external communication links are usually needed for hierarchical control schemes. However, once the communication link fails, the hierarchical control system will lose its ability to coordinate the distributed power smartly. This paper proposed a dual-window DC bus interacting (DBI) method to exchange information between the distributed energy sources, for the situations where communication link fails or is not available. A small-scale DC microgrid experimental system was setup, and a simple Master-Slave control scheme is implemented without communication link to demonstrate the feasibility of the proposed DBI method for DC microgrid controls. The expandability and immunity of the proposed DBI method were also evaluated.</p>
https://doi.org/10.5281/zenodo.2574511
oai:zenodo.org:2574511
eng
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.2574510
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IEEE Transactions on Sustainable Energy, (2019-02-20)
DC microgrids
Droop control
decentralized control
A Dual-Window DC Bus Interacting Method for DC Microgrids Hierarchical Control Scheme
info:eu-repo/semantics/article
oai:zenodo.org:4660571
2021-04-03T00:27:18Z
user-rdc2mt
user-eu
Li, Fulong
Zhengyu Lin
2021-04-02
<p>Boost converters have Non-Minimum Phase (NMP) characteristics, which makes the stable closed loop control design difficult. Based on the passive theory, this paper proposes to add a feed-forward loop in the conventional double loop closed loop to compensate the NMP effect. Therefore, the potential instability caused by NMP can be avoided. Such compensation is especially useful for DC microgrids applications where boost converters are widely used as interface converters. Two types of feed-forward gain are discussed and compared. The gain of K with high-pass filter is used eventually for integrating with conventional droop control because it does not change low frequency quiescent operation point. The stability of the proposed controller is analysed through loop gain on s-plane. Besides, how the output impedance of converter is shaped by the passive controller is analysed. The experimental results validate the effectiveness of the proposed passive controller.</p>
https://doi.org/10.1109/JESTPE.2021.3070234
oai:zenodo.org:4660571
eng
Zenodo
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IEEE Journal of emerging and selected topics in power electronics, (2021-04-02)
Boost converter
DC microgrid
Non-minimum phase
Passivity
Stability
Novel Passive Controller Design for Enhancing Boost Converter Stability in DC Microgrid Applications
info:eu-repo/semantics/article
oai:zenodo.org:1443577
2020-01-20T16:46:55Z
user-rdc2mt
user-eu
Li, Fulong
Lin, Zhengyu
Cao, Wenping
Chen, Alian
Wu, Jiande
2018-09-27
<p>Small-scale DC microgrids have been popular in recent years due to their flexibility and wide applications. Droop control is one of the most widely applied control method in interface converters for a DC microgrid. However, methods to select proper droop coefficients or droop coefficient zones are rarely discussed in reported literatures. This paper analyzes the impact caused by large droop coefficients from loop-gain perspective, and proposes a low pass filer method to avoid the significant DC bus voltage variations, which is harmful to the power quality and voltage-based control strategies. Also, a droop coefficient zone is defined according to the current sharing and DC bus voltage variations. A simulation study has been implemented to validate the proposed droop coefficient zone and feasibility of the proposed low pass filer method.</p>
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers.
https://doi.org/10.5281/zenodo.1443577
oai:zenodo.org:1443577
Zenodo
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https://doi.org/10.5281/zenodo.1443576
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ECCE 2018, The Tenth Annual IEEE Energy Conversion Congress and Exposition 2018, Portland, USA, 23-27 September 2018
DC microgrids
Droop coefficient
Droop control
Low pass filter
A Low-pass Filter Method to Suppress the Voltage Variations Caused by Introducing Droop Control in DC Microgrids
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:2539253
2020-01-20T17:45:58Z
user-rdc2mt
user-eu
Qiao, Zhi
Yang, Jin
Li, Jie
2018-11-11
<p>The integration of Renewable Energy Sources (RESs) and Plug-in Electric Vehicles (PEVs) into existing Low Voltage (LV) distribution networks may cause bi-directional power flow, thermal, voltage and other technical issues. In this paper, real-time intelligent PEV charging management and distributed Battery Energy Storage (BES) Systems are implemented to mitigate these technical impacts on the distribution grids. Based on the concept of future Smart Grid, a novel local Peer-to-Peer (P2P) energy transaction framework based on Time of Using (ToU) pricing scheme is proposed to make profits for domestic customers by utilising the available BES and RESs' generation capacity. This P2P real-time energy transaction framework revolutes the traditional electricity market, providing a platform for Microgrid operation in islanding mode during utility grid disturbance.</p>
https://doi.org/10.5281/zenodo.2539253
oai:zenodo.org:2539253
eng
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.2539252
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
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APSCOM, The 11th IET International Conference On Advances In Power System Control, Operation And Management, Hong Kong, 11-15 Nov 2018
Plug-in Electric Vehicle
Smart Grid
Distributed Energy Storage
Local Energy Trading
Time of Using Pricing
Local Peer-to-Peer Energy Transaction Framework Based on Time of Using Pricing Scheme
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:3908447
2020-06-25T22:18:23Z
user-rdc2mt
user-eu
Shi, Tianling
Liu, Heyu
Wang, Fei
Zhang, Shengqi
Guo, Hui
Lin, Zhengyu
2020-06-25
<p>The DC shipboard power system (DC-SPS) can be regarded as an island microgrid, supplying energy to propulsion systems, service devices and advanced equipment in future ships. Ensuring accurate power sharing among distributed power sources and maintaining the stability of DC bus voltage in DCSPS are prerequisites to run system in security and economy. Therefore, an accurate power sharing method based on the quadratic programming algorithm is proposed in this paper. That method aims at minimizing the cost of voltage regulation in the consideration of state of charge (SoC) of each energy storage device (ESD). In detail, the target power is determined by the DC bus voltage deviation, and further distributed among various energy storage by quadratic programming accurately. With the control method, the DC bus voltage is maintained within the desired voltage range. Moreover, the method can meet the plug-and-play requirements of distributed power. The effectiveness of the proposed control method is verified by realtime simulation.</p>
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
https://doi.org/10.5281/zenodo.3908447
oai:zenodo.org:3908447
eng
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.3908446
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ISIE 2020, 29th IEEE International Symposium on Industrial Electronics, online conference hosted in Delft, The Netherlands, 17-19 June 2020
DC shipboard power system (DC-SPS)
hybrid energy storage system (HESS)
quadratic programming
power sharing
state of charge (SoC)
Accurate Power Sharing of Hybrid Energy Storage System in DC Shipboard Power System Based on Quadratic Programming Algorithm
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:840986
2020-01-20T17:41:22Z
user-rdc2mt
user-eu
Wang, Ruichi
Wu, Jiande
Qian, Zhongnan
Lin, Zhengyu
He, Xiangning
2017-06-15
<p>The energy internet concept has been considered as a new development stage of the Smart Grid, which aims to increase the energy transmission efficiency and optimise the energy dispatching in time and space. Energy router is a core device in the energy internet and it connects all the devices together into a net structure and manages power flows among them. The research work presented in this paper described the energy router’s structure and function expectations from the network perspective, and improved the existing energy router design. Open-shortest-path first (OSPF) protocol and virtual circuit switching mode are referenced from the Internet in the energy local area network (e-LAN) design. This paper proposed a design of an energy routing algorithm based on graph theory in an e-LAN. A lowest-cost routing selection algorithm is designed according to the features of power transmission, and a source selection and routing design algorithm is proposed for very heavy load conditions. Both algorithms have been verified by case analyses.</p>
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers.
https://doi.org/10.5281/zenodo.840986
oai:zenodo.org:840986
Zenodo
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https://doi.org/10.5281/zenodo.808463
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Creative Commons Attribution Non Commercial No Derivatives 4.0 International
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Energy internet
Energy router
Routing algorithm
Smart grid
A Graph Theory Based Energy Routing Algorithm in Energy Local Area Network (e-LAN)
info:eu-repo/semantics/article
oai:zenodo.org:1463896
2020-01-20T17:40:51Z
user-rdc2mt
user-eu
Alshareef, Muhannad
Lin, Zhengyu
2018-10-16
<p>With the increased percentage of distributed renewable energy sources (RES) connected to the power network, it is challenging to maintain the balance between the power generation and consumptions against the unpredictable renewable energy generation and load variations. Considering this, this study proposed a new DC microgrid control strategy to reduce the disturbance to the main power grid from the distributed generation and load variations within the DC microgrid. The DC microgrid model used in this study includes an energy storage unit (battery), a distributed generation unit (PV) and loads. A fuzzy logic controller (FLC) is used to actively regulate the battery charging/discharging current to absorb the power variation caused by PV generation and load changes. The proposed control strategy is validated by simulation in MATLAB/Simulink.</p>
https://doi.org/10.5281/zenodo.1463896
oai:zenodo.org:1463896
eng
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.1463895
info:eu-repo/semantics/openAccess
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ICRERA 2018, 7th International Conference on Renewable Energy Research and Applications 2018, Paris, France, 14-17 OCTOBER 2018
DC microgrid
Fuzzy logic control
Energy Stoarge
A Constant Grid Interface Current Controller for DC Microgrid
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:3242452
2020-01-20T13:37:16Z
user-rdc2mt
user-eu
van der Blij, Nils
Ramirez-Elizondo, Laura
Spaan, Matthijs
Li, Wuhua
Bauer, Pavol
2019-05-27
<p>To tackle the challenges of future distribution systems, dc is being reconsidered. However, broad adoption of dc distribution systems requires additional research into the modeling, stability, protection and control of these systems. Previous research presents modeling methods that only consider monopolar configurations and do not take mutual couplings into account. Therefore, this paper presents a state-space method that can be applied to any dc distribution system, regardless of configuration and mutual couplings. Moreover, it shows how the state-space matrices can be derived in a programmatic manner. Furthermore, the models are validated using an experimental dc microgrid set-up. Due to the mathematical nature, the presented modeling method can be applied easily, and the stability and control can be analyzed algebraically.</p>
https://doi.org/10.5281/zenodo.3242452
oai:zenodo.org:3242452
eng
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.3242451
info:eu-repo/semantics/openAccess
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ICPE 2019-ECCE Asia, The 10th International Conference on Power Electronics – ECCE Asia, Busan, Korea, 27-30 May 2019
DC distribution
modeling
Simulation
state-space
State-Space Modeling of DC Distribution Systems: Experimental Validation
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:2573981
2020-01-20T16:08:48Z
user-rdc2mt
user-eu
Alshareef, Muhannad
Lin, Zhengyu
Ma, Mingyao
Cao, Wenping
2019-02-15
<p>This paper presents an accelerated particle swarm optimization (PSO)-based maximum power point tracking (MPPT) algorithm to track global maximum power point (MPP) of photovoltaic (PV) generation under partial shading conditions. Conventional PSO-based MPPT algorithms have common weaknesses of a long convergence time to reach the global MPP and oscillations during the searching. The proposed algorithm includes a standard PSO and a perturb-and-observe algorithm as the accelerator. It has been experimentally tested and compared with conventional MPPT algorithms. Experimental results show that the proposed MPPT method is effective in terms of high reliability, fast dynamic response, and high accuracy in tracking the global MPP.</p>
https://doi.org/10.3390/en12040623
oai:zenodo.org:2573981
eng
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
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Energies, 2019, 12, 623., (2019-02-15)
MPPT; partial shading conditions; PV; PSO; P&O
Accelerated Particle Swarm Optimization for Photovoltaic Maximum Power Point Tracking under Partial Shading Conditions
info:eu-repo/semantics/article
oai:zenodo.org:1443535
2020-01-20T17:32:24Z
user-rdc2mt
user-eu
Kalamaras, Evangelos
Belekoukia, Meltiani
Lin, Zhengyu
Xu, Bin
Wang, Huizhi
Xuan, Jin
2018-08-25
<p>Hybrid renewable energy systems that combine heat and electricity generation is an achievable option for remote areas where grid is uneconomical to extend. In this study, a renewable-based system was designed to satisfy the electrical and thermal demands of a remote household in an off-grid Greek island. A hybrid DC system consisted of a combination of photovoltaic modules, wind turbine, electrolyzer-hydrogen tank, fuel cell and batteries were analysed using HOMER Pro software. Based on the optimal obtained system, it is found that such a system can satisfy both electrical and thermal load demand throughout the year in a reliable manner.</p>
https://doi.org/10.5281/zenodo.1443535
oai:zenodo.org:1443535
eng
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.1443534
info:eu-repo/semantics/openAccess
Creative Commons Attribution Non Commercial No Derivatives 4.0 International
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Stand-alone DC power system
renewable energy
Homer, simulation
Techno-economic Assessment of a Hybrid Off-grid DC System for Combined Heat and Power Generation in Remote Islands
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:841896
2020-01-20T17:39:36Z
user-rdc2mt
user-eu
Wang, Ruichi
Wu, Jiande
Qian, Zhongnan
Lin, Zhengyu
He, Xiangning
2017-06-15
<p>The energy internet concept has been considered as a new development stage of the Smart Grid, which aims to increase the energy transmission efficiency and optimise the energy dispatching in time and space. Energy router is a core device in the energy internet and it connects all the devices together into a net structure and manages power flows among them. The research work presented in this paper described the energy router’s structure and function expectations from the network perspective, and improved the existing energy router design. Open-shortest-path first (OSPF) protocol and virtual circuit switching mode are referenced from the Internet in the energy local area network (e-LAN) design. This paper proposed a design of an energy routing algorithm based on graph theory in an e-LAN. A lowest-cost routing selection algorithm is designed according to the features of power transmission, and a source selection and routing design algorithm is proposed for very heavy load conditions. Both algorithms have been verified by case analyses.</p>
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers.
https://doi.org/10.5281/zenodo.841896
oai:zenodo.org:841896
Zenodo
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https://doi.org/10.5281/zenodo.808463
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IEEE Transactions on Industrial Informatics, 13(6), 3275 - 3285, (2017-06-15)
Energy internet
Energy router
Routing algorithm
Smart grid
A Graph Theory Based Energy Routing Algorithm in Energy Local Area Network (e-LAN)
info:eu-repo/semantics/article
oai:zenodo.org:3245131
2020-01-20T15:49:09Z
user-rdc2mt
user-eu
Li, Fulong
Lin, Zhengyu
Wu, Jiande
Li, Wuhua
2019-06-13
<p>This paper proposed a secondary control method for power sharing accuracy enhancement and bus voltage restoration in DC microgrids. Droop control is notorious for its low power sharing accuracy when the cable resistance is considered. The virtual negative cable resistance (VNCR) concept is proposed compensate the cable resistance, therefore, it no longer has negative impact on the power sharing accuracy. The VNCR controller needs to monitor the DC bus voltage through low bandwidth communications. As the byproduct, the DC bus voltage restoration can be achieved simultaneously. The control signals are processed through low-pass filters, so the secondary control layer can be decoupled from the primary current/voltage controls over high frequency dynamics. Finally, the proposed VNCR method is validated through MATLAB simulation.</p>
https://doi.org/10.5281/zenodo.3245131
oai:zenodo.org:3245131
eng
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https://doi.org/10.5281/zenodo.3245130
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ISIE 2019, The 28th International Symposium on Industrial Electronics, Vancouver, Canada, 12–14 June 2019
bus voltage restoration
current sharing accuracy
DC microgrids
droop control
low pass filter
Virtual Negative Cable Resistance for Power Sharing Accuracy Enhancement in DC Microgrids
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:3233981
2020-01-20T16:48:00Z
user-rdc2mt
user-eu
van der Blij, Nils
Ramirez-Elizondo, Laura
Spaan, Matthijs
Li, Wuhua
Bauer, Pavol
2019-05-28
<p>Constant power loads combined with low inertia form a major challenge for future distribution grids. This paper presents a state-space representation to model dc distribution systems. Two methods are discussed to analyze the (small-signal) stability of these dc distribution systems; an algebraic method and a Brayton-Moser method. The system models and the methods for stability analysis were verified using an experimental dc microgrid set-up. Furthermore, it was found that the instability of dc distribution systems can be classified into two categories: equilibrium instability and oscillatory instability.</p>
https://doi.org/10.5281/zenodo.3233981
oai:zenodo.org:3233981
eng
Zenodo
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https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.3233980
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ICDCM, The 3rd IEEE International Conference on DC Microgrids, Japan, 20-23 May 2019
dc distribution
eigenvalues
sensitivity analysis
stability
state-space
Stability of DC Distribution Systems: Analytical and Experimental Results
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:840982
2020-01-20T17:06:17Z
user-rdc2mt
user-eu
Li, Fulong
Lin, Zhengyu
Qian, Zhongnan
Wu, Jiande
2017-06-15
<p>This paper will be presented in 2017 Second IEEE International Conference on DC Microgrids (ICDCM) on 28th June 2017.</p>
<p>Abstract: Management of multiple energy storage devices in a DC microgrid is a challenge. Conventional method, such as droop control, cannot ensure accurate current sharing in coordinating multiple battery banks, which limits the DC microgrid system performance. This paper proposed an active DC bus signaling (ADBS) method to coordinate multiple battery banks in a DC microgrid. It has the advantages of accurate current sharing. Using the proposed ADBS method, the master controller can collect State of charge (SoC) of each slave battery bank by actively varying the DC bus voltage levels and monitoring the current change. The master module then sets a working voltage level after decision-making. The proposed method was experimentally evaluated, and the experimental results show that all the possible working voltage levels can be reached and the accuracy of current sharing is guaranteed.</p>
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers.
https://doi.org/10.5281/zenodo.840982
oai:zenodo.org:840982
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.809379
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Creative Commons Attribution Non Commercial No Derivatives 4.0 International
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DC microgrid
Control stragety
DC bus signaling
Multiple energy storage devices
Active DC Bus Signaling Control Method for Coordinating Multiple Energy Storage Devices in DC Microgrid
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:841897
2020-01-20T17:07:49Z
user-rdc2mt
user-eu
Li, Fulong
Lin, Zhengyu
Qian, Zhongnan
Wu, Jiande
2017-06-15
<p>This paper will be presented in 2017 Second IEEE International Conference on DC Microgrids (ICDCM) on 28th June 2017.</p>
<p>Abstract: Management of multiple energy storage devices in a DC microgrid is a challenge. Conventional method, such as droop control, cannot ensure accurate current sharing in coordinating multiple battery banks, which limits the DC microgrid system performance. This paper proposed an active DC bus signaling (ADBS) method to coordinate multiple battery banks in a DC microgrid. It has the advantages of accurate current sharing. Using the proposed ADBS method, the master controller can collect State of charge (SoC) of each slave battery bank by actively varying the DC bus voltage levels and monitoring the current change. The master module then sets a working voltage level after decision-making. The proposed method was experimentally evaluated, and the experimental results show that all the possible working voltage levels can be reached and the accuracy of current sharing is guaranteed.</p>
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers.
https://doi.org/10.5281/zenodo.841897
oai:zenodo.org:841897
Zenodo
https://zenodo.org/communities/rdc2mt
https://zenodo.org/communities/eu
https://doi.org/10.5281/zenodo.809379
info:eu-repo/semantics/openAccess
Creative Commons Attribution Non Commercial No Derivatives 4.0 International
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DC microgrid
Control stragety
DC bus signaling
Multiple energy storage devices
Active DC Bus Signaling Control Method for Coordinating Multiple Energy Storage Devices in DC Microgrid
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:4423209
2021-01-07T14:53:08Z
user-rdc2mt
user-eu
Fulong Li
Claudio A. Cañizares
Zhengyu Lin
2020-08-03
<p>DC microgrids require sources that maintain dc microgrid voltages, with Battery Energy Storage Systems (BESSs) being a good option for this task, given their multiple control alternatives. However, BESS cycling is an issue, and thus, this paper proposes an Energy Management System (EMS) for dc microgrids that considers battery degradation. Therefore, an EMS model is proposed and discussed, demonstrating its application for a practical dc microgrid of a building in Xiamen University. The simulation results show that the proposed EMS, which accounts for BES degradation costs, is an effective tool that avoids frequent battery charging and discharging, while maintaining the required dc bus voltage.</p>
https://doi.org/10.1109/PESGM41954.2020.9281580
oai:zenodo.org:4423209
eng
Zenodo
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Creative Commons Attribution 4.0 International
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2020 IEEE Power & Energy Society General Meeting, Canada, 3-6 August 2020
Battery Energy Storage System (BESS)
battery degradation
dc microgrid
Energy Management System (EMS)
Energy management system for dc microgrids considering battery degradation
info:eu-repo/semantics/conferencePaper
oai:zenodo.org:3906535
2020-08-22T14:55:08Z
user-rdc2mt
user-eu
van der Blij, Nils H.
Chaifouroosh, Dario
Canizares, Claudio A.
Soeiro, Thiago B.
Ramirez-Elizondo, Laura M.
Spaan, Matthijs T. J.
Bauer, Pavol
2020-06-19
<p>This paper presents a steady-state model and as-sociated power flow equations that can be applied to any dc grid. State-of-art power flow methods and two newly proposed methods are discussed and applied to the proposed steady-state model. A standardized IEEE test feeder is used to benchmark the power flow methods with respect to accuracy, convergence and computational efficiency. It is shown that the two new methods have a superior performance compared to the existing techniques for the steady-state analysis of most common dc grids, providing up to a 93 % increase in computational efficiency for the system that was analyzed in this paper. Therefore, it is demonstrated in this paper that these power flow techniques can be used for the operation, planning, optimization, market simulation, and security assessment of practical dc grids.</p>
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
https://doi.org/10.5281/zenodo.3906535
oai:zenodo.org:3906535
eng
Zenodo
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https://doi.org/10.5281/zenodo.3906534
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ISIE 2020, 29th IEEE International Symposium on Industrial Electronics, online conference hosted in Delft, The Netherlands, 17-19 June 2020
DC Grids
Modelling
Operation
Power Flow
Steady-State
Improved Power Flow Methods for DC Grids
info:eu-repo/semantics/conferencePaper