High-Frequency Model for Analyzing Leakage Currents in Electronic Pole-Changing Induction Motor Drive

This article presents a high-frequency model to analyze leakage current (LC) in electronic-pole-changing (EP-C) induction motor drives (IMDs). LC flows through parasitic capacitances in inverter-fed drive systems, resulting from the equivalent common-mode voltage (E-CMV) generated by the inverter�...

Full description

Saved in:
Bibliographic Details
Published inIEEE journal of emerging and selected topics in industrial electronics (Print) Vol. 6; no. 3; pp. 1037 - 1048
Main Authors Ch, S V S Phani Kumar, Sonti, Venu, Jain, Sachin, Singh, Bhim
Format Journal Article
LanguageEnglish
Published IEEE 01.07.2025
Subjects
Analytical models
Circuiting currents
Electromagnetic interference
Impedance
Inverters
Legged locomotion
parasitic capacitances
pole changing
Pulse width modulation
pulsewidth modulation
Switches
Switching frequency
Voltage
Windings
Online AccessGet full text

Cover

More Information
Summary:This article presents a high-frequency model to analyze leakage current (LC) in electronic-pole-changing (EP-C) induction motor drives (IMDs). LC flows through parasitic capacitances in inverter-fed drive systems, resulting from the equivalent common-mode voltage (E-CMV) generated by the inverter's high-frequency pulsewidth modulation (PWM) strategy. Furthermore, for EP-C operation, different PWM strategies are required to operate IMD in different pole-phase combinations. Additionally, high-frequency LCs contribute to electromagnetic interference in the system. Thus, it becomes essential to analyze in all different IMD's pole-phase combinations. This is because nature of these patterns is critical for both steady-state and pole transition operations in EP-C IMD, as they may lead to drive failure due to the breakdown of parasitic capacitances. Consequently, this article proposes an analysis to examine E-CMV and LC patterns using the switching function concept and a high-frequency IMD model for EP-C IMD operation. Furthermore, this analysis assists in deducing PWM strategies with optimal switching frequency ranges for smoother EP-C operation. To demonstrate the proposed analysis, two pole-phase combinations (3-ϕ, 12-pole, 9-ϕ, 4-pole) in EP-C IMD are considered with different PWM techniques. The analysis is conducted in the ANSYS simulation environment and verified experimentally.
ISSN:2687-9735
2687-9743
DOI:10.1109/JESTIE.2025.3531757