Model Correction of Permanent Magnet Synchronous Motor based on Residual Compensation
Abstract: This article takes permanent magnet synchronous motors as the research object, selects the vector control strategy of $i_d=0$ to achieve speed and current dual closed-loop control, and focuses on the research of sensorless control strategy applied to permanent magnet synchronous motors. Using MRAS based on fixed axis $\alpha - \beta$ system to obtain speed and position information. At the same time, the feasibility of the proposed MRAS was demonstrated using the popov hyperstability theory. By designing appropriate algorithms to suppress current disturbances in the current loop, the ability to resist disturbances can be enhanced. Based on the above ideas, the interference of current and the observed electromagnetic velocity and angle will be discussed in MRAS. Then, design a current residual compensation scheme to compensate for current disturbance residuals in real time. The core parameters of residual compensation can be adjusted through the PI parameters of MRAS without any additional parameter adjustments.
Submission Number: 199
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