摘要
提出三相Buck型三电平AC/AC变换器的电路拓扑结构,研究其电路工作原理,并给出控制策略以实现输出电压和飞跨电容电压的联合控制。相比于两电平变换器,三相Buck型三电平AC/AC变换器的开关管数量加倍,并增加了3个飞跨电容,但各开关管的电压应力均降低为原来的1 2,故适用于高输入电压大功率应用场合。仿真结果证明了三相Buck型三电平AC/AC变换器及其控制策略的可行性和理论分析的准确性。
The circuit topological structure of three-phase Buck type three-level AC/AC converter is proposed. The operating principle of the circuit is studied. The control strategy is given to realize combination control of the output voltage and the voltage of flying capacitor. In comparison with the two-level converter,the number of switching tubes of the three-phase Buck type three-level AC/AC converter is doubled and three flying capacitors are added while the voltage stress of each switching tube is half reduced. As a result,the converter can be applied in the high input voltage and high power occasions. The simulation results demonstrate the feasibility of three-phase Buck type three-level AC/AC converter and its control strategy,as well as the correctness of theoretical analysis.
出处
《现代电子技术》
北大核心
2018年第4期134-138,共5页
Modern Electronics Technique
基金
国家自然科学基金(51477107)
中国博士后基金(2015M571805)
江苏省博士后基金(1402107C)
江苏省光谱成像与智能感知重点实验室开放基金(3091601410407)
中央高校基本科研业务费专项资金南京理工大学近程高速目标探测技术国防重点学科实验室开放基金(30920130129625)
江苏省高等学校大学生创新创业训练计划项目(5731506915)~~
