Multi-mode fault diagnosis datasets of three-phase asynchronous motor under variable working conditions
Shijin Chen1,2, Zeyi Liu3,4, Chenyang Li5
1MCC5 Group Shanghai Co. LTD 201900, ShangHai, China.
Data in Brief
|March 2, 2026
Summary
This study introduces a new dataset for diagnosing faults in three-phase asynchronous motors under variable operating conditions. The data aids in developing robust fault detection methods for industrial applications.
Area of Science:
- Electrical Engineering
- Mechanical Engineering
- Data Science
Background:
- Three-phase asynchronous motors are critical in industry, but failures cause significant downtime.
- Vibration and current signals are key indicators for motor health monitoring.
- Variable operating conditions like fluctuating speeds and loads complicate fault diagnosis.
Purpose of the Study:
- To present a comprehensive dataset for three-phase asynchronous motor fault diagnosis.
- To include diverse fault types (single and compound) and severities.
- To cover realistic, variable speed and load conditions, including transitional states.
Main Methods:
- Collected triaxial vibration, three-phase currents, torque, and key-phase signals.
- Acquired data from a three-phase asynchronous motor under various fault conditions.
- Simulated single and compound faults (rotor unbalance, short circuits, bearing faults).
Main Results:
- A rich dataset encompassing diverse operational states and fault scenarios was created.
- The dataset captures data under both steady and transitional conditions.
- Includes single and mechanical-electrical compound faults for comprehensive analysis.
Conclusions:
- The dataset is valuable for developing and validating advanced fault diagnosis techniques.
- Enables the creation of more robust diagnostic tools for electric motors.
- Supports research into condition monitoring under realistic industrial environments.
Related Concept Videos
01:21Three-Phase Short Circuit—Unloaded Synchronous Machine
762
Conducting a three-phase short circuit test on an unloaded synchronous machine helps understand its impact on the system. The AC fault current's oscillogram, with the DC offset removed, reveals that the waveform amplitude decreases from an initially high value to a steady-state level for one phase of the machine.
This behavior occurs due to the magnetic flux produced by the short-circuit armature currents. Initially, these currents follow high-reluctance paths but eventually shift to...
This behavior occurs due to the magnetic flux produced by the short-circuit armature currents. Initially, these currents follow high-reluctance paths but eventually shift to...
762
01:21Power System Three-Phase Short Circuits
596
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
596
01:25Multimachine Stability
594
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
594
01:24Bus Impedance Matrix
550
Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
550
01:22Three-Phase Circuits
954
AC power distribution systems have three categories: single-phase, two-phase, and three-phase systems. The single-phase circuit, common in residential settings, typically employs a two-wire system connecting a single AC source to various loads. These circuits support standard household appliances operating at 120 volts (V) and 240 V, such as lamps, televisions, and microwaves. The first generators, Niagara Falls hydro plant installed in 1895, were two-phase and designed by Nikola Tesla. The...
954
01:30Three-Phase Voltages
651
A three-phase generator produces three voltages that are equal in magnitude but have a phase difference of 120 degrees. This identical magnitude and equal phase separated voltages are known as the balanced voltages and help to minimize power loss while ensuring a steady delivery of energy to connected loads. As voltage sources in a three-phase system can be configured in a wye or a delta formation, the loads connected to these systems can also be arranged in either configuration. This...
651