Online Inverter Fault Diagnosis of Buck-Converter BLDC Motor Combinations

Fang, Jiancheng; Li, Wenzhuo; Li, Haitao; Xu, Xiangbo

doi:10.1109/tpel.2014.2330420

Cited by 84 publications

(32 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…max( s FD  (18) According to (18), the faulty phase has the highest s value among others. Then faulty switch in the faulty leg can be determined from the sign of s as follows: y e s S 5 > 0 i c =0 yes S 6 < 0 i c =0 yes S 5 S 6 y e s S 7 > 0 i d =0 yes S 8 < 0 i d =0 yes S 7 S 8 y e s S 9 > 0 i e =0 yes S 10 < 0 i e =0 yes S 9 S 10 y e s S 1 < 0 i a ≠0 yes S 2 > 0 i a ≠0 yes S 3 < 0 i b ≠0 yes S 4 > 0 i b ≠0 yes S 5 < 0 i c ≠0 yes S 6 > 0 i c ≠0 yes S 7 < 0 i d ≠0 yes S 8 > 0 i d ≠0 yes S 9 < 0 i e ≠0 yes S 10 >…”

Section: Fault Diagnostic Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Simplified fault tolerant finite control set model predictive control of a five-phase inverter supplying BLDC motor in electric vehicle drive

Salehifar

Moreno-Eguilaz²,

Putrus

et al. 2016

Electric Power Systems Research

View full text Add to dashboard Cite

Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) Abstract -Multiphase brushless direct current (BLDC) motors can meet the increasing demand for higher reliability in motor drives applicable in electric vehicles by integrating fault diagnosis to a faulttolerant (FT) control method. To achieve this goal, a modified FT finite control set model predictive control (FCS-MPC) is proposed in this paper. The dead beat control is used to predict the reference voltage applied by the inverter. A sensitivity analysis is done to show the effect of model uncertainty on the controller performance. In addition, a simple, fast and general open switch and short circuit fault detection (FD) method in voltage source inverter (VSI) is presented. The FD method is capable of detecting open switch, open phase, and short circuit faults without any auxiliary variable. Moreover, it is robust to both speed and load transients in a motor drive. To validate the presented theory, experimental results are conducted on a five-phase BLDC motor drive with outer rotor in wheel structure.

show abstract

Section: Fault Diagnostic Methodsmentioning

confidence: 99%

“…In the second step, the reference voltage is calculated as: (9) Similar to (7), the reference current at time k+2 is predicted as:…”

Section: Fault-tolerant Fcs-mpc Of a Five-phase Bldc Motormentioning

confidence: 99%

Simplified fault tolerant finite control set model predictive control of a five-phase inverter supplying BLDC motor in electric vehicle drive

Salehifar

Moreno-Eguilaz²,

Putrus

et al. 2016

Electric Power Systems Research

View full text Add to dashboard Cite

show abstract

“…Several fault diagnosis methods for switch failures have been reported in previous works [10][11][12][13][14][15][16]. A low-cost diagnostic method for MOSFET faults in a zero-voltage-switching DC-DC converter is proposed in [10].…”

Section: Introductionmentioning

confidence: 99%

Fast switch fault diagnosis for PWM DC–DC low power converters

Qian

Sun

2017

IEEJ Transactions Elec Engng

View full text Add to dashboard Cite

In this paper, a fast switching fault diagnostic scheme is proposed for low‐power pulse width modulation (PWM) DC–DC converters operating in different conduction modes. The outstanding feature of the proposed scheme is that no additional sensing circuits are needed. This is achieved by using the differential of output ripple voltage and the switch gate driver signal for diagnosis. Since the output voltage has to be normally measured for control purposes and the PWM signals are known to the controller, no additional sensors are needed in the proposed scheme. Moreover, based on the real‐time output voltage measurement and switch gate driver signal, the characteristics of switch open‐ and short‐circuit faults can be rapidly extracted, specifically, in less than one switching cycle. Besides, the fault detection scheme can be implemented by a low‐cost logical hardware circuit, which can be integrated into the control unit. The fault diagnosis principle, design considerations, and implementation of the detection scheme are discussed in this paper. Experimental results show that the fault detection system can detect the switching fault in four‐tenths of the switching period. Besides, the proposed method can be used in the applications where the output voltage ripple rate is more than 4%, which covers most situations. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

show abstract

“…For space application, high reliability and low power loss are demanded in the high-speed motor. Brushless dc (BLDC) motors with ironless and slotless stator are introduced [3]- [5].…”

Section: Introductionmentioning

confidence: 99%

Position Sensorless Control Without Phase Shifter for High-Speed BLDC Motors With Low Inductance and Nonideal Back EMF

Fang

et al. 2016

IEEE Trans. Power Electron.

Self Cite

View full text Add to dashboard Cite

1 Abstract-This paper presents a novel method for position sensorless control of high-speed brushless dc (BLDC) motors with low inductance and nonideal back electromotive force (EMF) in order to improve the reliability of the motor system of a magnetically suspended control moment gyro (MSCMG) for space application. The commutation angle error of the traditional line-to-line voltage zero-crossing points (ZCPs) detection method is analyzed. Based on the characteristics measurement of the nonideal back EMF, a two-stage commutation error compensation method is proposed to achieve the high reliable and high accurate commutation in the operating speed region of the proposed sensorless control process. The commutation angle error is compensated by the transformative line voltages, the hysteresis comparators and the appropriate design of the low-pass filters (LPFs) in the low speed and high speed region respectively. High precision commutations are achieved especially in the high speed region to decrease the motor loss in steady state. The simulated and experimental results show that the proposed method can achieve an effective compensation effect in the whole operating speed region.Index Terms-Brushless dc (BLDC) motor, position sensorless control, back electromotive force (EMF) detection.

show abstract

Online Inverter Fault Diagnosis of Buck-Converter BLDC Motor Combinations

Cited by 84 publications

References 31 publications

Simplified fault tolerant finite control set model predictive control of a five-phase inverter supplying BLDC motor in electric vehicle drive

Simplified fault tolerant finite control set model predictive control of a five-phase inverter supplying BLDC motor in electric vehicle drive

Fast switch fault diagnosis for PWM DC–DC low power converters

Position Sensorless Control Without Phase Shifter for High-Speed BLDC Motors With Low Inductance and Nonideal Back EMF

Contact Info

Product

Resources

About