软开关APFC倍频感应加热电源的研究  

Study on Soft-switching APFC Multiple-frequency Induction Heating Power

作　　者：杨青[1] 沈锦飞[1] 

机构地区：[1]江南大学电气自动化研究所,江苏无锡214122

出　　处：《现代电子技术》2010年第12期205-207,共3页Modern Electronics Technique

摘　　要：针对倍频感应加热电源整流器的非线性特性引起网侧电流畸变,功率因数低等问题,采用一种新型的软开关Boost电路取代传统LC滤波环节进行功率因数校正。整个电源系统采用DSP+CPLD实现了CCM模式下的平均电流PFC控制和倍频逆变模块的分时-移相控制策略。仿真与试验结果实现了输入侧单位功率因数,升压电路的开关管在高频开关状态下实现ZCS开启与ZVS关断,开关损耗大大降低。A novel soft switching Boost circuit substituted the traditional LC wave filter is introduced to accomplish power factor correction for solving the problems of the net current distortion and low power factor caused by nonlinearity of multiple- frequency induction heating power rectifier. The entire power system adopted DSP-FCPLD to accomplish average-current PFC control in CCM pattern and time division-phase shift control tactics in the multiple-frequency inverter. The simulative and experimental results show that the input power factor close to unity, the switch tube opened under high frequency is working at the ZVS and ZCS mode, the switch spoilage reduces greatly.

关 键 词：软开关 BOOST PFC 倍频逆变 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]