Driving system of switched reluctance motor

Abstract

The invention discloses a driving system of a switched reluctance motor, which mainly comprises an FPGA chip (1), a driving circuit (2), a power converter (3), a motor body (4), a position detection module (5), a current detection module (6) and a power supply (7), and is characterized in that the power supply module (7) is connected with the FPGA chip (1) and provides power for the chip, an appropriate driving signal is calculated according to a controller algorithm in the FPGA chip (1), the driving signal is outputted to the driving circuit (2) through a PWM module, control is performed on the motor body (4) through the power converter (3) so as to enable the motor body (4) to operate, the position detection module (5) acquires a position signal of the motor body (4) while the motor body(4) is in operation and feeds back the position signal to the FPGA chip (1), and the current detection module (6) performs phase current detection. The driving system provided by the invention designs speed calculation and the driving signal through a hardware description language by using an FPGA so as to generate a parallel hardware processing module, and has the advantages of high response speed, small torque ripple and high system stability.

Description

technical field [0001] The invention relates to the technical field of control of switched reluctance motors, in particular to a design of a drive system for switched reluctance motors. Background technique [0002] The switched reluctance motor speed control system, referred to as SRD, integrates power electronics technology, microelectronics technology and motor control technology. It is a typical mechatronics technology and has excellent speed control performance. It is a new type of speed control system. , it not only has the basic advantages of AC and DC speed regulation, but also has unique high-speed performance and fault tolerance. It has simple structure, strong and durable, low cost, many controllable parameters, flexible and diverse control methods, can obtain various required mechanical characteristics, and has high efficiency in a wide range of speed regulation. Therefore, it has received extensive attention in the fields of industrial electrical transmission, ...

AI Technical Summary

Problems solved by technology

Although the traditional switched reluctance motor control system has a series of advantages, the relationship between the torque magnitude and the rotor position and the instantaneous value of the winding current in the switched reluctance motor is obviously nonlinear, which leads to the torque ripple and noise of the motor. question

Traditionally, linear models and quasi-linear models are used to describe the relationship between motor flux linkage, angle and current, and the accuracy is poor, which further deteriorates the control effect

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