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This paper describes the causes of cogging torque in Permanent Magnet synchronous Motor. Establishes a motor model by ANSOFT software, uses Finite Element Method to quantitative analysis and comparative peak cogging torque and torque with notches at different locations, and different number of auxiliary slot. The conclusion is that notch reasonable can reduce the cogging torque of permanent magnet...
In this paper, an open-circuit fault tolerant strategy for a five-phase permanent magnet synchronous machine (PMSM) is proposed based on the theory of keeping the magneto-motive force constant under both healthy and faulty conditions. According to the principle, the corresponding modified current vectors of healthy windings under three different open-circuit faults are derived, respectively. Then,...
This paper presents a simple and reliable method for detecting the faults occurring in a permanent magnet synchronous generator (PMSG) connected with a three-phase uncontrolled rectifier bridge (TPURB), which is based on monitoring the output DC current. A PMSG connected with a TPURB at constant speed is discussed under two types of faults, namely phase winding faults and diode faults. An adaptive...
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