应用单片机控制的感应加热电源频率跟踪调功方式

Frequency Tracking and Power Regulation of Induction Heating Power Supply Controlled by SCM

本文主要对感应加热电源的调功方式进行了研究。由于感应加热过程中负载等效参数随温度而变化和加热工艺的需要,感应加热电源需要对负载进行功率调节。针对几种常用的功率调节方式进行比较的基础上,本文提出了一种应用单片机控制的频率跟踪调节方法。这一开发使用PWM控制器SG3525A和数字电位器X9312WP实现,控制电路简单可靠,整机效率高,大大降低能耗。

This paper studied power regulation method of induction heating power supply.Induction heating power supply need to adjust the load according to the change of heating load equivalent parameters process induction with temperature and heating process needs.Compared several commonly used power adjustment method;a microprocessor controlled frequency tracking adjustment method is proposed.This method implemented by PWM controller X9312WP and digital potentiometer SG3525A,the control circuit is simple and reliable,and the machine is efficienct and greatly reduces energy consumption.