电气传动2025，Vol.55Issue(6)：36-44,9.DOI:10.19457/j.1001-2095.dqcd25517
基于Si和SiC器件混合的并网变流器及其调控策略研究
A Grid-connected Converter Based on Heterogeneous Device Hybrid and Its Control Strategy
摘要
Abstract
In order to further improve the output performance and efficiency of the converter,a grid-connected converter based on heterogeneous device mixing was proposed,referred to as heterogeneous grid-connected converter(HGCC).The HGCC consists of two half-bridge modules based on SiC MOSFET devices,which are cross-connected by the commutation bridge arm based on Si IGBT devices.Furthermore,the HGCC modulation principle was given.The SiC MOSFET device works in the high-frequency switching state,while the Si IGBT device works in the low-frequency switching state,giving full play to the advantages of low switching loss of SiC devices and low on-state loss of Si devices.Then,the working mode of HGCC was analyzed in detail,and the control block diagram of HGCC and the internal voltage balancing strategy of capacitor were given.Finally,the effectiveness and feasibility of the proposed topology and control strategy was verified by simulation.关键词
并网变流器/Si IGBT器件/SiC MOSFET器件/调制策略/稳压策略Key words
grid-connected converter/Si IGBT device/SiC MOSFET device/modulation strategy/voltage stabilization strategy分类
动力与电气工程引用本文复制引用
朱远哲,王玲,吴争荣,吕鸿,肖凡..基于Si和SiC器件混合的并网变流器及其调控策略研究[J].电气传动,2025,55(6):36-44,9.基金项目
中国南方电网有限责任公司科技项目(GDKJXM20210172) （GDKJXM20210172）
