Synchronous motor control system and control method

Abstract

The invention belongs to the technical field of motor control, and particularly relates to a synchronous motor control system and method, and the system comprises a load detection processing module, a rotating speed detection processing module, a carrier frequency monitoring processing module, a control driver, and a storage module. The input ends of the load detection processing module, the rotating speed detection processing module and the carrier frequency monitoring processing module are respectively connected with the motor, the output ends of the load detection processing module, the rotating speed detection processing module and the carrier frequency monitoring processing module are respectively connected with the input end of the control driver, and the output end of the control driver is connected with the motor. The system can accurately control the motor by adopting different carrier frequencies and parameters according to the running state of the motor at different stages, different rotating speeds and different loads, so that the jitter of the motor can be reduced, the risk of damage of a power device can be reduced, and the service life of the motor can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to a synchronous motor control system and a control method. Background technique [0002] With the development of power electronics technology and the rapid development of electrical equipment technology, the motor has become an executive mechanism that must be involved in various electrical equipment, and energy saving and efficiency enhancement have also become the development trend of the electrical equipment industry. [0003] Motors are divided into asynchronous motors and synchronous motors. Due to the rapid development of semiconductor technology, frequency conversion speed regulation technology has been continuously improved and improved. The frequency converters that have been gradually improved are widely used in asynchronous motors for their good output waveforms and excellent performance-price ratio. application. [0004] However, for the control of sy...

AI Technical Summary

Problems solved by technology

For example, in the current electric car control, the frequency usually used is 10K. When the car is running at high speed, the switching times of the motor are the same as the switching speed at low speed. This will easily cause the power device to switch frequently, resulting in damage to the device.

[0005] Therefore, in view of this situation, it is urgent to design and produce a synchronous motor control system and control method to solve the problem that the drive module is prone to failure, the motor is prone to vibration, and the power device is damaged in the prior art.

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