Novel synchronous electric motor and electric motor control system

Abstract

The invention relates to a novel synchronous electric motor and an electric motor control system thereof, and realizes the special advantages of 'one electric motor and three states' and 'one state and multiple characteristics'. The invention is characterized in that on the basis of the existing permanent magnetic synchronous electric motor used for an electric automobile and a controller thereof, an exciting winding is added on a rotor, and the current of the exciting winding is controlled by an electric motor controller to change the intensity of a magnetic field of the electric motor so as to change the external characteristics of the electric motor and achieve the target of 'one electric motor and multiple characteristics'. The characteristic overcomes the defects of insufficient torque and poor dynamic property when the existing permanent magnetic synchronous electric motor used for the electric automobile is used for climbing, simultaneously solves the problem of insufficient electric motor speed when the electric automobile is in cruise control or high-speed running, and completely meets the requirements on road conditions of the electric motor used for the electric automobile. An advanced topology and control algorithm is adopted for the electric motor controller adaptive to the invention, and the electric motor is controlled more efficiently, and has better dynamic property and a longer running range.

Description

technical field [0001] The invention relates to the field of motor systems, in particular to a novel synchronous motor for pure electric vehicles with high performance, a motor control system and a synchronous generator wind power generation system. Background technique [0002] As the society pays more and more attention to environmental pollution, electric vehicles have become the development direction of the automobile industry, and the electric vehicle motor drive system has become the key to realize the driving performance of the whole vehicle. Electric vehicles have a wide load range and speed range, and run on different road conditions, resulting in very complicated operating road conditions for their drive motors. [0003] The electric vehicle drive motor system should have the highest possible torque density, instantaneous power, good torque control capability, high reliability, wide speed range and high efficiency within a wide speed range. In order to meet this r...

AI Technical Summary

Problems solved by technology

This feature overcomes the shortcomings of insufficient torque and poor power performance of the existing permanent magnet synchronous motors for electric vehicles when climbing, and at the same time solves the shortcomings of insufficient motor speed for cruise control or high-speed driving, and fully meets the needs of electric vehicles. The road condition requirements of the motor, and it can work in the efficient area as much as possible in each different road condition

Images