A ZVS Grid-Connected Full-Bridge Inverter With a Novel ZVS SPWM Scheme

被引:67
作者
Chen, Yenan [1 ]
Xu, Dehong [1 ]
Xi, Jiangbei [1 ]
Hu, Guangcheng [1 ]
Du, Chengrui [1 ]
Li, Yawen [1 ]
Chen, Min [1 ]
机构
[1] Zhejiang Univ, Inst Power Elect, Coll Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China
基金
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词
Full-bridge inverter; pulse width modulation; zero-voltage switching (ZVS); RESONANT DC-LINK; HIGH-EFFICIENCY; SWITCHING-LOSS; MAGNETICS;
D O I
10.1109/TPEL.2015.2456032
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A zero-voltage switching (ZVS) grid-connected full-bridge inverter and its modulation schemes are investigated. A novel sinusoidal pulse width modulation scheme for the ZVS full-bridge inverter (ZVS SPWM) is proposed in this paper. The ZVS SPWM is evolved from the double-frequency SPWM by adding gate drive to the auxiliary switch. The ZVS condition is analyzed and the circulation loss of the resonant branch is optimized by adjusting the energy storage in the resonant inductor. The reverse recovery of the body-diode of MOSFET is relieved and ZVS is realized for both main and auxiliary switches. The filter inductors are significantly reduced with higher switching frequency. The design guideline of resonant parameters and the implementation of ZVS SPWM in DSP controller are introduced. The ZVS SPWM scheme is verified on a 3-kW inverter prototype. According to the experimental result, peak efficiency as 98.8% is achieved.
引用
收藏
页码:3626 / 3638
页数:13
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