Large power series resonance DC/DC parallel topology circuit

一种大功率串联谐振dc/dc并联的拓扑电路

Abstract

本实用新型涉及一种大功率串联谐振DC/DC并联的拓扑电路,包括:至少两个并联的串联谐振DC/DC电路;外网直流电接入所述并联的串联谐振DC/DC电路的输入端,且该并联的串联谐振DC/DC电路的输出端作为所述拓扑电路的输出端;所述串联谐振DC/DC电路包括:单相逆变电路,与该单相逆变电路相连的高频谐振电路,与该高频谐振电路相连的单相整流电路;所述高频谐振电路包括:谐振电容、与该谐振电容相连的高频变压器。本实用新型的拓扑电路的主电路由串联谐振并联拓扑电路组成,至少两个串联谐振DC/DC电路并联运行,具有均流和均功率效果好的特点,不容易产生环流,单台功率扩展容易的特点。
A large power series resonance DC/DC parallel topology circuit of the utility model comprises at least two parallel series resonance DC/DC circuits, an external network direct current is accessed in the input end of the parallel series resonance DC/DC circuits, and the output end of the parallel series resonance DC/DC circuits is used as the output end of the topology circuit. The series resonance DC/DC circuit comprises a single-phase inverter circuit, a high frequency resonance circuit connected with the single-phase inverter circuit and comprising a resonant capacitor and a high-frequency transformer connected with the resonant capacitor, and a single-phase rectifying circuit connected with the high frequency resonance circuit. A main circuit of the topology circuit of the utility model is composed of the series resonance parallel topology circuits, and at least two series resonance DC/DC circuits are connected in parallel to work, thereby having the characteristics of being good in current averaging and power averaging effects, being not easy to generate a ring current and being easy to expand the single power.

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    CN-104218814-ADecember 17, 2014江苏有能新能源有限公司, 周细文High-power series resonance DC/DC parallel topology circuit