Performance Study of Three-Phase Fault-Tolerant Permanent Magnet Motor Drive for Marine Propulsion System Based on Structure Design

2017 ◽  
Vol 61 (1) ◽  
pp. 23-34 ◽  
Author(s):  
Hongfen Bai ◽  
Jingwei Zhu ◽  
Junfeng Qin
Keyword(s):  
Permanent Magnet ◽  
Fault Tolerant ◽  
Structure Design ◽  
Propulsion System ◽  
Motor Drive ◽  
Performance Study ◽  
Permanent Magnet Motor ◽  
Marine Propulsion ◽  
Three Phase ◽  
Marine Propulsion System

Performance Study of Three-Phase Fault-Tolerant Permanent Magnet Motor Drive for Marine Propulsion System Based on Structure Design

2017 ◽  
Vol 61 (01) ◽  
pp. 23-34
Author(s):  
Hongfen Bai ◽  
Jingwei Zhu ◽  
Jungfeng Quin
Keyword(s):  
Permanent Magnet ◽  
Performance Optimization ◽  
Fault Tolerant ◽  
Structural Parameters ◽  
Harmonic Distortion ◽  
Structure Design ◽  
Performance Study ◽  
Permanent Magnet Motor ◽  
Cogging Torque ◽  
Three Phase

The fault-tolerant permanent magnet motor (FTPMM) drives are desired in electric ship propulsion systems. The winding inductance, the sinusoidal degree of the back electromotive force (back-EMF) waveform, and the total harmonic distortion (THD) of the cogging torque are the important factors that affect the operating performance of FTPMM drive. A performance optimization of a three-phase FTPMM by varying motor structural parameters is presented in this article. By analyzing mathematical formulas, notch parameters and permanent magnet size are designed optimally to obtain large winding self-inductance, good sinusoidal degree of back-EMF, and low THD of cogging torque. The finite element verification in Ansoft proves selected parameters reasonable. Finally, an experimental prototype motor is specifically built according to determined parameters; and good performances, magnetic isolation, and fault-tolerant capacity can be guaranteed.

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