摘要
为了解决传统感应加热电源开关损耗较高及功率因数较低的不良效果,本文设计出了一种以集成高速锁相环CD4046为核心的控制电路,该控制电路可以对逆变器进行实时频率跟踪,根据反馈信号做出合理的相位补偿,确保逆变器工作于弱感性状态,并在获得较高输入功率因数的同时实现开关零电压功能,实验结果表明该控制电路结构简单,工作性能稳定,在工业应用方面存在潜在价值。
In view of the disadvantages that there are higher switching loss and lower power factor in the traditional induction heating power supply, this paper proposes a kind of control circuit taking high-speed integrated phase-locked loop CD4046 as the core. The control circuit can carry out real-time frequency tracking to the inverter. In order to to ensure that the inverter works in the weak inductance state, it makes reasonable phase compensation according to the feedback signal. With gaining higher input power factor, it realizes the function of ZVS. The experimental results show that the control circuit has simple structure, stable working performance and higher industrial application value.
出处
《电子设计工程》
2016年第2期101-104,共4页
Electronic Design Engineering
基金
河南省重点科技攻关计划项目(112102310073)
