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| Initial Position Detection of Permanent Magnet Motor Based on Virtual Pulsating High-FrequencyInjection Method |
| Lü Xiaoyuan1,2,3, Liu Gang1,2,3, Mao Kun1,2,3, Chen Baodong1,2,3 |
1. Science and Technology on Inertial Laboratory Beijing University of Aeronautics and Astronautics Beijing 100191 China;
2. Key Laboratory of national defense of new inertial instrument and navigation technology Beijing University of Aeronautics and AstronauticsBeijing 100191 China;
3. Beijing Engineering Research Center of High-Speed Magnetically Suspended Motor Technology and Application Beijing 100191 China |
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Abstract Nowadays, the sensorless position detection method of permanent magnet synchronous are mainly divided into two types: one is based on the fundamental wave detection; the other is based on the saliency effects.This paper is mainly based on the saliency effects. It analyses the traditional high-frequency pulsating injection methodandimproves traditional method by adding a virtual high-frequency rotating coordinate. A position detection method of permanent magnet synchronous motor based on virtual pulse high frequency injection is proposed.Compared with traditional pulsating high-frequency injection method,this method does not require PI regulator,which can be achieved by project easily.At the same time,this method solves part of zero-corssing problems of traditional pulsating injection method. The method is verified by simulation and experimental test.
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Received: 21 July 2016
Published: 22 December 2017
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2017, Vol. 32 
