Sensorless full speed range control strategy of high-speed maglev brushless DC motor

被引：0
|
作者：
Chen S.-H. [1 ,2 ,3 ]
Liu G. [1 ,2 ,3 ]
Zheng S.-Q. [1 ,2 ,3 ]
Guo J.-C. [1 ,2 ,3 ]
机构：
[1] School of Instrumentation Science and Optoelectronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing
[2] Beijing Engineering Research Center of High-Speed Magnetically Suspend Motor Technology and Application, Beijing
[3] University of Aeronautics and Astronautics, Beijing
来源：
Chen, Shao-Hua | 1600年 / Editorial Department of Electric Machines and Control卷 / 21期
关键词：
Brushless DC motor; Closed-loop correction; G function; Maglev blower; Sensorless;
D O I：
10.15938/j.emc.2017.04.015
中图分类号：
学科分类号：
摘要：
This paper focuses on start-up strategy of high-speed maglev brushless DC Motor, and the accurate expressions of voltage and flux linkage have been obtained, and the functional equation of rotor position and motor flux linkage have been pointed out. The reason of the rotor position being difficult to be tested in the low speed of the high speed maglev brushless DC motor has been analyzed. A G function method of high speed maglev brushless DC motor has been proposed. This method took the equivalent phase current of non-commutation phase amplitude as the target and takes the phase current difference of non-commutation phase before and after the commutation as feedback amount, and corrected the commutation signals automatically through G function threshold by PI regulator. Experimental results show that the proposed sensorless full speed range control strategy can ensure the full speed range of 20000 r/min. © 2017, Harbin University of Science and Technology Publication. All right reserved.
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页码：105 / 114
页数：9
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