Transient Performance Analysis of Permanent Magnet Synchronous Motors Using the Finite Element Method. No load current obtained from starting performance analysis.

Finite Element Analysis of Permanent Magnet Synchronous Motors Subjected to Symmetrical Voltage Sags

This paper studies the effects of symmetrical voltage sags on the operational characteristics of a Permanent Magnet Synchronous Motor (PMSM) by Finite Element Method (FEM). Voltage sags may cause high torque pulsations which can damage the shaft or equipment connected to the motor. By recognizing the critical voltage sags, sags that produce hazardous torque variations could be prevented. Simula...

Steady-State and Transient Performance Analysis of Permanent-Magnet Machines Using Time-Stepping Finite Element Technique

Dynamic Performance Analysis of High-Frequency Signal Injection Based Sensorless Methods for Interior Permanent Magnet Synchronous Motors

This paper focuses on three commonly used sensorless methods based on high-frequency signal injection; namely, the rotating sinusoidal injection in the stationary reference frame, the pulsating sinusoidal injection in the estimated synchronous reference frame, and the pulsating square wave injection in the estimated synchronous reference frame. Although these methods have found applications in ...

Optimization of Current Excitation for Permanent Magnet Linear Synchronous Motors

The main problem in improving the tracking performance of permanent magnet linear synchronous motors is the presence of force ripple caused by mismatched current excitation. This paper presents a method to optimize the current excitation of the motors in order to generate smooth force. The optimized phase current waveforms produce minimal ohmic losses and maximize motor efficiency. The current ...

An experimental and Finite Element analysis of radii and skew effects on interior permanent magnet motors performance

Effect of rotor iron pole radii and skew on performance of interior permanent magnet motors is studied in this paper. A comparison is carried out by finite element analysis method and is confirmed by the experimental results obtained with two laboratory prototypes. The results show that, although the skew method is very effective in suppressing the cogging torque of an interior permanent magnet...