Low-power Design for DC Current Transformer Using Class-D Compensating Amplifier
Authors/Creators
- 1. Electrical Institute "Nikola Tesla"
- 2. School of Electrical Engineering
Description
Abstract: Classical DC current transformer, based on a linear amplifier as a compensating amplifier, is well-known as a power inefficient device. If the linear amplifier is replaced with switching counterpart, significant power saving can be achieved. Natural choice for replacement can be found in a half-bridge class-D amplifier. However, half-bridge class-D amplifier is prone to bus-pumping effect, and direct replacement cannot be performed in a straight forward manner. This study presents analysis of power consumption issues and irregular behaviour for a DC current transformer, caused by the bus-pumping effect. For the case of DC current measurement, the main issues are explained, giving better insight to power consumption, and possible hazards to transformer circuitry. Presented analytical results are experimentally verified.
Files
Restricted
The record is publicly accessible, but files are restricted. <a href="https://zenodo.org/account/settings/login?next=https://zenodo.org/records/6466836">Log in</a> to check if you have access.
Additional details
Funding
- Ministry of Education, Science and Technological Development
- Increasing the availability and energy efficiency in thermal power plants and energy distribution systems by developing new diagnosis and early fault detection methods 32038
- Ministry of Education, Science and Technological Development
- Increase of power efficiency, reliabillity and availability of EPS power plants by asserting capability curves of generators and by applying new methods of testing and remote monitoring 33024