摘要
提出单级双向反激式高频环节逆变器电路拓扑及其Buck型有源箝位电路,并对这种逆变器的电路拓扑、电压瞬时值反馈控制策略、稳态原理特性、Buck型有源箝位电路和关键电路参数设计准则等进行深入的分析研究。这种逆变器电路拓扑是由输出低频正、负半周的单极性脉宽调制电流波且共用输入、输出滤波器的两个相同的双向Flyback直流变换器以输入端并联、输出端反向串联构成。采用所提出的电路拓扑,设计并研制成功的750 VA 48 VDC/220 V 50 Hz AC逆变器样机具有电路拓扑简洁、单级功率变换、变换效率高、控制简单、有源箝位性能良好等优良性能。
A circuit topology with a Buck mode active clamped circuit of the single-stage bi-directional flyback mode inverter with high frequency link was proposed in this paper. The circuit topology, the output voltage instantaneous feedback control strategy, steady principle characteristics, and the design criteria for the key circuit parameters were fully investigated in this paper. The circuit topology is composed of two identical bi-directional flyback DC-DC converters with the same input and output filters. Two converters in parallel at the input-end and in series at the output-end separately generate uni-polarity sinusoidal pulse width modulation current waveforms. And the two converters output positive and negative half cycle uni-polarity PWM current waveforms. Using the proposed circuit topology, successfully designed and implemented 750 VA 48 VDC/220 V 50 Hz AC prototype of the inverter has excellent performances such as the simple topology, single stage power conversion, high conversion efficiency, the simple control scheme, and good active clamped performances etc.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2015年第7期1732-1739,共8页
Proceedings of the CSEE
基金
国家自然科学基金项目(61271116)~~
关键词
逆变器
高频环节
反激直流变换器
双向功率流
单级功率变换
inverter
high frequency link
flyback DC-DC converter
bi-directional power flow
single-stage power conversion
