Description: Based on the idea of salient pole tracking, the two high-frequency signal injection method- rotating high-frequency voltage signal injection method and pulsating high frequency voltage signal injection method in the operation control of permanent magnet synchronous motor position/speed sensor. Introduced the rotor position of the two high-frequency signal injection method since the detection principle, pointed out that the key technology in two ways, and the application of these two positions since the detection methods to establish a permanent magnet synchronous motor sensorless vector control system simulation model for the simulation comparison. The comparison results show that the pulse of high-frequency voltage signal injection Salient tracking system is simple, static, dynamic speed performance However, the system of rotating high-frequency voltage signal injection method is easier to implement.
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sensorless comparison.pdf
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