Published June 7, 2025 | Version v1
Dataset Restricted

Multimodal Signal Dataset for Fault Detection in PMSM-Driven Elevators Under Real Operating Conditions

Authors/Creators

  • 1. ROR icon International Hellenic University
  • 2. Demokriteio Panepistemio Thrakes Polytechnike Schole

Description

This dataset contains synchronized time-series recordings of current and vibration signals collected from a fully operational residential elevator system equipped with a surface-mounted Permanent Magnet Synchronous Motor (PMSM). The data were acquired under healthy and faulty operating conditions, across various load levels and motion directions. The dataset supports research in predictive maintenance, signal analysis, and fault classification for PMSM-based elevator drives.

All data were collected non-intrusively using industrial sensors:

Hioki PW3390 power analyzer for current and THD,

Triaxial accelerometer (ISO 20816-3 compliant) for vibration.

The system is a 9-stop, 6-passenger MRL elevator, driven by a 5.1 kW, 12-pole PMSM motor.

No signal post-processing was applied; raw sensor values are preserved for reproducibility.

Technical info (English)

Contents of the Dataset

The Excel file contains four sheets:

1. Healthy_Current_Signal

  • Description: Current signals recorded during normal elevator operation.
  • Columns:

Time (msec): Time index in milliseconds.

Current Upward {X}Kg (A): Current signal (in Amperes) during upward motion with cabin load X kg (X = 0, 150, 300, 415).

Current Downward {X}Kg (A): Same during downward motion.

  • Sampling Rate: 4 kHz (data recorded every 0.25 msec).
  • Duration: Full elevator trip for each load.

2. Faulty_Current_Signal

  • Description: The faulty signal measurements were collected on a laboratory testbench using a PMSM motor of the same type and rating as the one installed in the operational elevator system. A controlled partial short-circuit fault was introduced in one of the stator phases to simulate early-stage winding degradation. The motor was tested under two specific load conditions corresponding to:
  • 0% (no-load), and
  • 50% of the motor’s nominal load, to replicate the same loading scenarios observed in real elevator operation. These experiments were conducted under safe and monitored conditions to ensure consistency and comparability with the in-service dataset.
  • Current signals recorded under winding fault conditions.
  • Columns:

Time (msec): Time index.

Current (5A): High-current signal (50% of the motors nominal load).

Current (2.5A): Moderate-current signal (0% load).

3. Healthy_Vibration_Signal

  • Description: Motor casing vibration under normal operating conditions.
  • Columns:

Time (sec): Time index in seconds.

a (mm/sec²): Vibration acceleration in mm/sec² (root sum of squares of triaxial measurements).

  • Sampling Rate: 10 Hz.

4. Faulty_Vibration_Signal

  • Description: Vibration signals under eccentricity and early-stage mechanical imbalance.
  • Same format as Healthy_Vibration_Signal.

Files

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