NDLI: Stator inter-turn fault detection in closed-loop controlled drive based on switching sideband harmonics in CMV

Content Provider	IET Digital Library
Author	Liu, He Huang, Jin Hou, Zhaowen Yang, Jiaqiang Ye, Ming
Abstract	This study proposes a method for stator fault detection of inverter-fed induction machine in closed-loop control. The sideband response of inverter switching harmonics in common-mode voltage (CMV) is employed to detect the stator inter-turn fault, thus no additional injected signal is necessary. However, the PWM nature harmonics introduce undesired CMV signals, depending on the inherent imbalance or resistance asymmetry. For this reason, the CMV amplitude is not suitable to indicate the fault directly. In this study, the behaviour of switching harmonic is analysed first, and then a simple but efficient stator fault model is demonstrated. To suppress the adverse interference from inverter, an inter-turn fault indicator is proposed by utilising both of the switching sidebands. This method can obtain fault location and severity with low sensitivity to steady operating condition and stator imbalance. The experimental results validate the effectiveness of the proposed method.
Starting Page	178
Ending Page	186
Page Count	9
ISSN	17518660
Volume Number	11
e-ISSN	17518679
Issue Number	Issue 2, Feb (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/11/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2016.0555
Journal	IET Electric Power Applications
Publisher Date	2017-02-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asynchronous Machine Closed Loop System Closed-loop 5 Controlled Drive Closed-loop Control System CMV CMV Signal Common-mode Voltage Control of Electric Power System Drive Fault Diagnosis Fault Location Induction Motor Drive Inter-turn Fault Indicator Inverter Switching Harmonics Inverter-fed Induction Machine Invertors Machine Control PWM Nature Harmonics Resistance Asymmetry Sideband Response Stator Fault Model Stator Imbalance Stator Inter-turn Fault Stator Inter-turn Fault Detection Stators Switching SideBand Switching Sideband Harmonics
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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