Investigation of short-circuit fault in a fault-tolerant brushless permanent magnet AC motor drive with redundancy

Zhu, Jingwei; Niu, Xiaobing

doi:10.1109/iciea.2010.5515682

Cited by 11 publications

(2 citation statements)

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“…When a fault occurs, the fault phase is switched to the redundant bridge arm. However, this method increases costs and occupies space [16][17][18][19]. Compared with the hardware fault-tolerant strategy, the reduced-order decoupling and optimal current fault-tolerant strategies can achieve disturbance-free operation without increasing the requirement of hardware resources.…”

Section: Introductionmentioning

confidence: 99%

Fault-Tolerant Control Strategy for 12-Phase Permanent Magnet Synchronous Motor

et al. 2019

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Multi-phase motors have attracted increasing attention in fields seeking high reliability, such as electric vehicles, ships, and rail transit, as they exhibit advantages, such as high reliability and fault tolerance. In this study, we consider a 12-phase permanent magnet synchronous motor (PMSM). First, a mathematical model of the 12-phase PMSM in the static coordinate system is established and the model is simplified according to the constraint condition of neutral point isolation. Second, according to the principle of invariant magnetomotive force under normal and fault conditions, two optimal control strategies of winding current, i.e. maximum torque output (MTO) and minimum copper consumption (MCC), are proposed. For a single-phase open-circuit fault, two optimization methods are used to reconstruct the residual phase current, such that the motor can maintain normal torque output and exhibit lower torque ripple under the fault state. Finally, system simulation and experimental research are conducted; the results verify the accuracy and feasibility of the fault-tolerant control strategy of the 12-phase PMSM proposed in this paper.

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Section: Introductionmentioning

confidence: 99%

Fault-Tolerant Control Strategy for 12-Phase Permanent Magnet Synchronous Motor

et al. 2019

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“…In this topology, one motor can continue to operate normally even if the other motor module completely failed [11]. The optimal current control strategy for dual-redundant FTPMM was investigated in [12][13][14]. Then a novel dual-redundant structure was built in which two motors have a circumferential displacement of mechanical angle of 4.5°, and an improved optimal torque control strategies under open-circuit faulty and short-circuit faulty conditions were proposed in [15].…”

Section: Introductionmentioning

confidence: 99%

Fault‐tolerant control for a dual‐winding fault‐tolerant permanent magnet motor drive based on SVPWM

Bai

Zhu

Qin

et al. 2017

IET Power Electronics

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The dual-winding fault-tolerant permanent magnet motor (FTPMM) drive can overcome the shortcomings of single FTPMM and dual-redundant FTPMM drive and further improve the fault-tolerant capability of motor drives. The vector control technique based on voltage space vector pulse width modulation (SVPWM) can reduce switching frequency and improve the dynamic performances of the motor drive. In this study, the structure and principle of vector control system based on SVPWM for a dual-winding FTPMM drive was introduced. The distribution of voltage space vectors was analysed and the vector control strategies under healthy and one-phase open-circuit faulty conditions were proposed in which the magnetomotive force was kept constant with the minimum copper loss. The simulation and experimental results are provided to verify the validity of the proposed fault remedial strategy based on SVPWM technique.

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