A Fault Tolerant Control Strategy for Dual Three-Phase PMSM under Single-Phase Open Circuit Fault Considering Inductance Asymmetry

2021 ◽  
Author(s):  
Z. Li ◽  
L. Wu ◽  
J. Liu
Keyword(s):  
Control Strategy ◽  
Single Phase ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Open Circuit ◽  
Three Phase

scholarly journals Sensorless Control of a Fault Tolerant PMSM Drives in Case of Single-Phase Open Circuit Fault

2016 ◽  
Vol 7 (4) ◽  
pp. 1061
Author(s):  
Kamel Saleh ◽  
Mark Sumner
Keyword(s):  
Control Strategy ◽  
System Performance ◽  
Single Phase ◽  
Fault Tolerant ◽  
Sensorless Control ◽  
Fault Tolerant Control ◽  
Performance Degradation ◽  
Open Circuit ◽  
Phase Inverter ◽  
Simulation Results

This paper introduces a sensorless-speed-controlled PMSM motor fed by a four-leg inverter in case of a single phase open circuit fault regardless in which phase is the fault. To minimize the system performance degradation due to a single phase open circuit fault, a fault tolerant control strategy that includes taking appropriate actions to control the two remaining healthy currents is used in addition to use the fourth leg of the inverter.  Tracking the saliency is done through measuring the dynamic current responses of the healthy phases of the PMSM motor due the IGBT switching actions using the fundamental PWM method without introducing any modification to the operation of the fourth leg of the inverter. Simulation results are provided to verify the effectiveness of the proposed strategy for sensorless controlling of a PMSM motor driven by a fault-tolerant four-phase inverter over a wide speed ranges under the case of a single phase open circuit.

Fault-tolerant control strategy for open-circuit fault of two-parallel-connected three-phase AC–DC two-level PWM converter

2020 ◽  
Vol 20 (3) ◽  
pp. 731-742 ◽  
Author(s):  
Hyun-Keun Ku ◽  
Jun-Hyung Jung ◽  
Jin-Woo Park ◽  
Jang-Mok Kim ◽  
Yung-Dueg Son
Keyword(s):  
Control Strategy ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Open Circuit ◽  
Pwm Converter ◽  
Three Phase

scholarly journals Fault-Tolerant Control Strategy with Asymmetric Phase Currents for Single to Four-Phase Open-Circuit Faults of Six-Phase PMSM

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3163
Author(s):  
Chen Huang ◽  
Lidan Zhou ◽  
Zujia Cao ◽  
Gang Yao
Keyword(s):  
Working Conditions ◽  
Control Strategy ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Open Circuit ◽  
Time Varying ◽  
Electromagnetic Torque ◽  
Control Loops ◽  
Phase Current ◽  
Multi Phase

Multi-phase motors and generators are regarded with great fault tolerance capability, especially on open-circuit faults. Various mathematics analytical methods are applied for their fault control. In this paper, a fault-tolerant control strategy with asymmetric phase current for the open-circuit faults with arbitrary phases in the six-phase PMSM (six-phase permanent magnetic synchronous motor, 6P-PMSM) system, is proposed for better electrical and dynamical performance of the machine. An innovative mathematical model for PMSM under one to four-phase-open circuit faults are established considering the asymmetry of the machine. Combining with time-varying relations in machines’ working conditions, targeted decoupling transformation matrixes of every kind of open-circuit faults are settled by voltage equations under different faults. Modified control strategy with a connection between the neutral point and the inverter’s DC side is presented, which aims at increasing the system redundancy and reducing the amplitude of phase currents. Besides, improved control loops with two layers are put forward as well, with which the PMSM system acquires fewer harmonics in phase current and smoother electromagnetic torque. Simulation and experimental results of open-circuit faults are provided for verification of the theoretical analysis.

Fault-Tolerant Control of a Triple Redundant PMA-SynRM Driven Under Single-Phase Open-Circuit by Mono-Inverter

2021 ◽  
pp. 1-1
Author(s):  
Meiling Zhao ◽  
Guohai Liu ◽  
Qian Chen ◽  
Wenxiang Zhao ◽  
Christopher H. T. Lee
Keyword(s):  
Single Phase ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Open Circuit
Sign in / Sign up

Export Citation Format

Share Document