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http://dx.doi.org/10.7471/ikeee.2020.24.1.67

Simulation Model of Harmonics Injection Sensorless Technique for Permanent Magnet Synchronous Motor  

Yoon, Jin-Woo (School of Electronic and Electrical Engineering, Hongik University)
Lee, Dong-Myung (School of Electronic and Electrical Engineering, Hongik University)
Publication Information
Journal of IKEEE / v.24, no.1, 2020 , pp. 67-71 More about this Journal
Abstract
In this study, a simulation model of the harmonic injection sensorless control technique is proposed. This model is suitable for the sensorless technique of low-speed area operation of motors. The motor of this model is permanent magnet motor. For sensorless control, 1kHz square wave is injected. The change in motor constant according to rotor position is realized by having different d-q inductance values. Sensorless techniques is implemented through functions of Simulink and models provided by Simulink libraries. It is shown that the harmonic component contained in the current is extracted using a filter, and the angle of the permanent magnet of the motor is detected using the extracted waveform. The validity of the simulation model is demonstrated through the estimated motor angle waveform and the related waveforms of the motor control applied to the 1kW permanent magnet motor.
Keywords
Sensorless operation; High-frequency wave injection; Simulation model; Observer; PMSM;
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