CAJ | 학술논문

为解决目前级联式逆变器的开关器件均工作在硬开关状态而造成较高开关损耗的问题,提出了一种带有直流环节并联谐振型软开关辅助谐振电路的三相桥式逆变单元与2级H桥逆变单元相串联的混合级联逆变拓扑结构。主级逆变单元开关频率比副级逆变单元的开关频率高一个数量级,在保证逆变电路整体输出效果的前提下,软开关的加入有效地降低了逆变电路的开关损耗。利用Matlab/Simulink仿真软件对所提电路进行了仿真研究,并对仿真结果进行了傅里叶分析,证明了所提拓扑结构的正确性。
위해결목전급련식역변기적개관기건균공작재경개관상태이조성교고개관손모적문제,제출료일충대유직류배절병련해진형연개관보조해진전로적삼상교식역변단원여2급H교역변단원상천련적혼합급련역변탁복결구。주급역변단원개관빈솔비부급역변단원적개관빈솔고일개수량급,재보증역변전로정체수출효과적전제하,연개관적가입유효지강저료역변전로적개관손모。이용Matlab/Simulink방진연건대소제전로진행료방진연구,병대방진결과진행료부리협분석,증명료소제탁복결구적정학성。
A novel inverter topology is presented which consist of 3-phase inverter unit with resonant DC link soft-switching auxiliary resonant unit cascade with 2 levels H-bridge inverter units for the high switch loss which caused by multi-level inverter under the state of hard-switching.The switching frequency of primary circuit is higher by one magnitude than auxiliary circuit.On the premise of output assurance,the addition of the soft-switching decrease the switch loss effectively.Simulate the circuit with Matlab/Simulink and research the result with Fourier analysis,proof the correctness of the topology of the circuit.