Sensorless Algorithm for Effective Magnetic Chain Method based on Voltage Error Correction and Its Application to Ultra-high-speed Motors
Hydrogen energy has the characteristics of zero pollution,wide source and high efficiency,and hydrogen fuel air compressors are generally high-speed permanent magnet synchronous motors,which is an important direction for the development of new energy vehicles in the future.Under normal circumstances,the speed of the air compressor is relatively high,and the signal obtained by the sensor of the motor is not accurate enough under high-speed conditions.In this paper,an effective flux method sensorless control algorithm based on d-axis voltage error compensation method is proposed,and a motor controller for hydrogen-fueled air compressor is designed.The effective flux linkage model and phase-locked loop model are established to estimate the rotor position of the motor,The d-axis voltage compensation method is proposed to further optimize the estimated rotor position.adopt three-stage starting strategy.The hardware structure of the controller is designed,including the main control chip,the driver chip and the peripheral circuit.The basic performance and stability of the controller are tested and verified.The results show that the controller can increase the motor speed to 150krpm at 77kHz carrier frequency,the start time is 0.9s,and the acceleration time to the maximum speed is 1.44s.The controller has simple structure and strong robustness.
air compressord axis voltage error compensationsensorless algorithmeffective flux linkage methodTC265 microcontroller
万方数据
维普
