兆赫级超高频感应加热电源电路的分析及研究.pdfVIP

第 27 卷 第 19 期 中 国 电 机 工 程 学 报 Vol.27 No.19 Jul. 2007 2007 年 7 月 Proceedings of the CSEE ©2007 Chin.Soc.for Elec.Eng. 0258-8013 (2007) 19-0080-07 TN911;TM73 A 470 40 文章编号： 中图分类号： 文献标识码： 学科分类号： ⋅ 兆赫级超高频感应加热电源电路的分析与研究 王正仕，楼珍丽，陈辉明 （浙江大学电气工程学院，浙江省杭州市 310027 ） Analysis and Research on a Mega-Hz-level Super High Frequency Induction Heating Power Supply Converter WANG Zheng-shi, Lou Zhen-li, CHEN Hui-ming (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, Zhejiang Province, China) ABSTRACT: A novel bi-switching super high-frequency 周知，电子管感应加热设备效率很低(50%左右) ，器 converter is proposed. The converter is capable of absorbing the 件使用寿命短，需要预热启动[1] 。采用MOSFET等 inductive and capacitive parasitical components in circuit for 快速电力电子器件研制全固态超高频感应加热已经 induction heating power supplies. All switch devices operate in 成为该领域的发展趋势，并在 1MHz左右的小功率 zero-voltage soft switching mode. The problems of high voltage 应用领域已经取得了一些成果[2-13] 。相对于较低频 and current spikes caused by parasitic inductor or capacitor oscillation, and huge switching loss in super high-frequency 率(如几十kHz 、几百kHz) ，兆赫级超高频电源由于 operation, which are troublesome in super high-frequency 开关频率高，在电路设计和生产工艺上增加了很多 circuits, can be solved. Moreover, as a high-frequency inductor 问题，特别是需要解决电路中杂散分布参数引起的 is inset in the input, this novel converter shares the benefits of 电压电流过冲和器件开关损耗大这两大问题。因为 both voltage-type and current-type inverters simultaneously, 在兆级频率下，线路中的杂散电感和器件寄生电容 and the dead-time betwee