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左海彪,饶益花,胡波,陈文光.3次谐波谐振电路在桥式射频电源中的应用研究[J].电源学报,2018,16(3):173-180
3次谐波谐振电路在桥式射频电源中的应用研究
Application of Third-order Resonant Circuit in Full-bridge RF Power Supply
投稿时间:2016-05-10  修订日期:2018-01-21
DOI:10.13234/j.issn.2095-2805.2018.3.173
中文关键词:  射频电源  3次谐波谐振电路  系统仿真  MOSFET
英文关键词:RF power supply  third-order resonant circuit  system simulation  MOSFET
基金项目:
作者单位E-mail
左海彪 南华大学电气工程学院, 衡阳 421001  
饶益花 南华大学数理学院, 衡阳 421001  
胡波 南华大学电气工程学院, 衡阳 421001  
陈文光 南华大学电气工程学院, 衡阳 421001 tocwg6666@126.com 
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中文摘要:
      在桥式射频电源中接入3次谐波谐振电路,用于改善MOSFET的快速开关状态。通过在桥式逆变器的交流端连接3次谐波谐振电路,将3次类正弦波电流叠加于正弦负载电流上,从而实现对MOSFET输出电容的快速充电或放电,使MOSFET适用于更高的工作频率。对2 MHz/2 kW射频电源进行仿真分析,其结果表明:接入3次谐波谐振电路不仅减少了MOSFET的换向时间,而且降低了MOSFET的开关损耗;同时,死区和3次谐波谐振电路品质因数对电路的影响分析,验证了3次谐波谐振电路的可行性和有效性。
英文摘要:
      A third-order resonant circuit is connected to a full-bridge RF power supply to improve the fast switching states of MOSFET. By connecting the third-order resonant circuit at the AC terminals of a full-bridge inverter, the third-order sine-like resonant current is superimposed on a sinusoidal load current, which helps to quickly charge or discharge the output capacitance of each MOSFET and makes it suitable for higher operation frequencies. Simulation results obtained from a 2 MHz/2 kW RF power supply show that the connection of a third-order resonant circuit not only reduces the commutation time of MOSFET, but also reduces its switching loss; at the same time, the influences of dead-time and the Q-factor of the third-order resonant circuit on the circuit are analyzed, which verifies the feasibility and effectiveness of the third-order resonant circuit introduced in this paper.
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