Speed Sensorless Control of Doubly Salient Machine Based on Improved Pulsating High-Frequency Injection

Abstract In traditional pulsating high-frequency injection (PHFVI), the PI regulator is usually used to extract rotor position information of machine. The has some shortcomings, such as poor tracking performance and weak anti-interference ability. Thus a new full-order state observer proposed in this paper. This method firstly uses PHFVI get error signal then establishes according mechanical motion equation machine estimate speed. paper introduces coordinate transformation further decouple mathematical model double salient (DSM). results simulation MATLAB/Simulink show that effectiveness certain reference value for research speed sensorless control DSM.