中国电机工程学报2016，Vol.36Issue(21)：5899-5908,10.DOI:10.13334/j.0258-8013.pcsee.152628
辅助电路无耦合电感的箝位谐振直流环节逆变器
Clamping Resonant DC-link Inverter With No Coupled Inductors in the Auxiliary Circuit
摘要
Abstract
A new clamping resonant dc-link inverter was proposed to improve the efficiency and reduce the auxiliary resonant circuit loss. With no coupled inductors in the auxiliary circuit, it could bring convenience to analyze and calculate the circuit. Because of the clamping circuit, the maximum voltage across the dc-link inverter devices was maintained at around 1.01–1.1 times of the input source voltage. When all main switches in the inverter needed operating, the dc-bus voltage decreased to zero via the single switch which controlling the resonance of the auxiliary circuit. Then the main switching devices in the inverter were operated under zero-voltage condition and auxiliary switching device was turned on under zero-current condition and turned off under zero-voltage condition. The operation principle was analyzed based on the equivalent circuits at different operation modes. The conditions of soft-switching and the process of parameter design were also achieved. A 10kW laboratory prototype was built. The experimental results demonstrated that all main switching devices realized soft-switching. Therefore, the novel clamping resonant dc-link inverter can effectively reduce switching loss and improve efficiency.关键词
逆变器/谐振/箝位/耦合电感/软开关/单独开关Key words
inverter/resonant/clamp/coupled inductors/soft- switching/single switch分类
信息技术与安全科学引用本文复制引用
王强,单瑞香,王天施,刘晓琴..辅助电路无耦合电感的箝位谐振直流环节逆变器[J].中国电机工程学报,2016,36(21):5899-5908,10.基金项目
国家自然科学基金项目(51207069)。Project Supported by National Natural Science Foundation of China (51207069) （51207069）
