Controller and method for disc-type coreless permanent magnet synchronous motor based on current source inverter

Abstract

The invention relates to a disc-type coreless permanent-magnet synchronous motor controller based on a current inverter and a method. The disc-type coreless permanent-magnet synchronous motor controller comprises a control circuit, a three-phase inverting circuit and a step-down chopper circuit, wherein the three-phase inverting circuit is used for driving a disc-type coreless motor, and the signal input end of the three-phase inverting circuit is connected with the signal output end of the control circuit; the control signal input end of the step-down chopper circuit is connected with the signal output end of the control circuit, and the current output end of the step-down chopper circuit is connected with the current input end of the three-phase inverting circuit through an inductor L; the output shaft of the disc-type coreless motor is connected with the signal input end of the control circuit through an angle sensor; and the three-phase current outputs of the three-phase inverting circuit are respectively connected with the signal input end of the control circuit through a current sensor. The controller controls the speed regulation of the disc-type coreless permanent-magnet synchronous motor and increases the maximum speed of the motor. The controller has the characteristics of small current pulsation, good sinusoidal performance, convenience in energy feedback and the like.

Description

technical field [0001] The invention relates to a control system of a disc-type coreless permanent magnet synchronous motor for an electric vehicle hub. In particular, it relates to a controller and method for a disc-type coreless permanent magnet synchronous motor based on a current-source inverter. Background technique [0002] As a new type of clean energy, electric energy will become an inevitable trend of future energy development, and electric vehicles will inevitably replace traditional fuel vehicles as the mode of transportation in the new era. At present, related technologies in the field of electric vehicles are a hot topic in research and development, and automotive hub motors are also the focus of recent research. As a core component of the vehicle powertrain system, the motor drive control system must ensure its high efficiency and quick response. At present, the drive system of ordinary electric vehicles mostly adopts centralized drive. The rotational power g...

AI Technical Summary

Problems solved by technology

However, since the motor itself has no iron core, the inductance of the stator winding is very small, so when the voltage-based controller drives this type of motor, the stator winding current cannot be continuous, resulting in torque fluctuations in the motor, so the traditional motor control method cannot meet the requirements of the disk type Control Requirements of Ironless Permanent Magnet Synchronous Motor

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