Seamless Transition of Interior Permanent Magnet Synchronous Motor Base on Back Electromotive Force Observer
Keywords:
sensorless control, interior PMSM, permanent magnet synchronous motor, observerAbstract
Electric motors are important in many fields such as industrial automation, electric vehicles, and other advanced devices. The increasing popularity of applications related to electric motors, especially in the transition from depleting non-reusable energy sources to electric power, has raised a demand for research and development in motor control. In operation mode, the sensor fault can affect the safety of users. Therefore, this paper presents an operation that considers two modes. Firstly, the motor is controlled using a field-oriented control strategy with an absolute encoder. Second, assuming a sensor fault occurs during operation, fault detection and switching commands are used to change the signal source. This paper focuses on the sensorless method, fault determination, and analysis of working conditions after transition. The feasibility of the algorithm is validated through MATLAB/Simulink simulation environment.
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