电工技术学报2016，Vol.31Issue(14)：193-200,8.
混合H桥级联逆变器的优化调制
Modified Modulation of H-Bridge Hybrid Cascaded Inverters
摘要
Abstract
The topology of H-bridge hybrid cascaded with voltage ratio 1∶2 can achieve seven-level output to improve power density. With the modulation of multi-carrier stacked, the switches of one bridge in the low voltage unit are working at high frequency, and the switches of the other bridge are working at low frequency. The uneven heat distribution will shorten the life of the device and endanger the system. Therefore, this paper presents a modified modulation. By maintaining the same output characteristics and efficiency, the max switch working frequency of each unit can be reduced by half, and all the switches of each unit can work at the same state. The modified modulation is helpful to increase the life of the switches and the stability of the system.关键词
混合H桥级联/多电平逆变器/多层载波层叠调制/优化控制Key words
Hybrid cascaded H-bridge/multilevel inverter/multi-carrier stacked modulation/modified modulation分类
动力与电气工程引用本文复制引用
何凯益,任磊,邓翔,陈轶涵,龚春英..混合H桥级联逆变器的优化调制[J].电工技术学报,2016,31(14):193-200,8.基金项目
国家自然科学基金资助项目（51377079）。 （）
