Superposed-permanent-magnet-motor-based electrical vehicle drive control system

Abstract

The invention relates to a superposed-permanent-magnet-motor-based electrical vehicle drive control system, which comprises a brake pedal and an accelerator pedal of an electrical vehicle, a superposed permanent magnet motor having at least two phase windings, a driving motor for driving the electrical vehicle to run, a power supply module, a control module, a power conversion module, a brake pedal angle sensor, an accelerator pedal angle sensor, a current sensor for detecting current in the phase windings, a position sensor for detecting the position of the rotor of the motor, and a speed sensor for detecting the speed of the motor, wherein the drive signal output end of the control module is connected with the input end of the power conversion module, and the power conversion module is connected with the windings of the motor; the signal output ends of the current and speed sensors are connected with the corresponding signal input ends of the control module respectively; and the brake pedal angle sensor and the accelerator pedal angle sensor are connected to the corresponding input ends of a controller by buses. In the invention, the electrical braking torque is large, the braking is flexible, and the regenerated power return efficiency is high.

Description

technical field [0001] The invention belongs to the field of drive control systems, in particular to an electric vehicle drive control system based on superimposed permanent magnet motors. Background technique [0002] Electric vehicles are a convenient means of personal transportation. In the past, the electric motor was a permanent magnet brushless synchronous motor. The current electric motor is a high-efficiency high specific energy stacked permanent magnet ironless core brushless motor. The motor has a simple structure , Reliable operation, small size, light weight, high efficiency, flexible shape and size of the motor, etc. It consists of a rotating shaft, a permanent disk on the rotating shaft, and a magnetically permeable rotor backing ring spaced axially between the permanent disks , stator winding discs, stator coil lead wires, and power controllers. There are multiple opposing N poles and S poles between the two permanent disks, which together with the magnetica...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above defects, the present invention provides an electric vehicle drive control system based on superimposed permanent magnet motors with large electrical braking torque, flexible braking methods, and high regenerative energy feedback efficiency, which solves the problems of regenerative braking failure and other problems

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