差动正激直流变换器型高频环节逆变器

Differential Forward DC-DC Converter Mode Inverter With High Frequency Link

提出差动正激直流变换器型高频环节逆变器电路拓扑,并对该变换器的电路拓扑、瞬时电压控制策略、稳态原理特性、关键电路参数设计准则等进行了深入地分析研究。该逆变器是由2个相同的、输出反相低频正弦脉动直流电压的高频电气隔离双向功率流正激直流变换器以差动电路构成。理论分析和仿真结果表明,该变换器具有高频电气隔离、电路拓扑简洁、双向功率流、输出电压纹波小、负载适应能力强等优点。原理实验证实了这种逆变器的正确性与可行性,为实现新型逆变电源奠定了关键技术基础。

The circuit topology of the differential Forward DC-DC converter mode inverter with high frequency link was proposed. Circuit topology, transient voltage control strategy, steady principle characteristic and design criteria for the key circuit parameters were deeply investigated. This kind of inverter was differentially constituted of two same Forward DC-DC converters with out of phase low-frequency sine pulsate DC output voltage. The analysis and simulation results shows that the converter has the advantages such as high frequency electrical isolation, simple topology, bi-direction power flow, small output ripple voltage, strong adaptability to various loads etc. The correction and feasibility of this inverter are fully verified by the principle test. The inverter lay the key technical foundation on new inverting power supplies.