Research on a non-complementary active clamp flyback converter with unfolding DC-AC inverter for decentralized grid-connected PV systems
Research on a non-complementary active clamp flyback converter with unfolding DC-AC inverter for decentralized grid-connected PV systems
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DOI：
10.1109/ecce.2011.6064098
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发表时间：
2011-11
期刊：
影响因子：
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通讯作者：
Qiong Mo;Min Chen;Zhe Zhang;M. Gao;Z. Qian
中科院分区：
文献类型：
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作者：
Qiong Mo;Min Chen;Zhe Zhang;M. Gao;Z. Qian
提出了一种非互补有源箝位反激变换器与展开DC-AC逆变器，用于分布式光伏并网系统。采用电流基准使反激式输出电流为半波正弦波。采用不连续导通模式和边界导通模式相结合的方法，在整个负载范围内优化效率，并限制最大开关频率。提出了一种非互补型有源箝位电路，实现了主开关管的软开关，进一步提高了电路的效率。仿真和实验结果验证了该电路的性能。
This paper proposes a non-complementary active clamp flyback converter with unfolding dc-ac inverter for decentralized grid-connected PV systems. A current reference is applied to make the flyback output current half wave sinusoid. Combination of discontinuous conduction mode (DCM) and boundary conduction mode (BCM) is used to optimize the efficiency with the whole load range and to limit the maximum switching frequency. A non-complementary active clamp circuit is proposed to recycle leakage energy and achieve soft switching for the main switch, which further improve the efficiency of the circuit. Performance of the proposed circuit is validated by the simulation and experimental results.