中国电机工程学报2023，Vol.43Issue(24)：9435-9446,中插5,13.DOI:10.13334/j.0258-8013.pcsee.223291
基于ZVS变频控制的Si/SiC混合ANPC逆变器损耗评估
Evaluation of Different Si/SiC Hybrid ANPC Inverters Based on Variable Frequency ZVS Control
蔡志成 1苏建徽 2杜燕 1杨向真 2施永2
作者信息
- 1. 合肥工业大学电气与自动化工程学院,安徽省 合肥市 230009
- 2. 教育部光伏系统工程研究中心,安徽省 合肥市 230009
- 折叠
摘要
Abstract
The variable frequency controlled zero-voltage-switching(VF-ZVS)can achieve zero-voltage-switching(ZVS)without auxiliary circuit,and can further improve the efficiency and power density of SiC MOSFET inverter.But in three-phase Active-neural-point-converter(ANPC),the current ripple will be dramatically increased if all the power switches achieve the ZVS,which changes the path of current,and influences the loss distribution characteristics.In this paper,the piecewise mathematical expression of the current ripple about the vector function of time is established,and the loss modeling method of SiC MOSFET including the current ripple is proposed.The influence law of the current ripple on the MOSFET's loss characteristics under the control of VF-ZVS is characterized.Furthermore,the newly added commutation processes of 2SiC,4SiC I and 4SiC II inverter are analyzed under VF-ZVS control.The proposed loss model is used to evaluate the switch loss,conduction loss and loss distribution equalization of the three hybrid topologies under different degree of modulation and power levels.The correctness of the SiC MOSFETS's loss model and the loss evaluation results of the three hybrid topologies can be verified experimentally with the 6kW SiC experimental platform under different power levels.关键词
有源中点钳位逆变器/碳化硅/零电压开关/损耗/效率Key words
active-neural-point-converter(ANPC)converter/SiC/zero-voltage-switching(ZVS)/loss/efficiency分类
信息技术与安全科学引用本文复制引用
蔡志成,苏建徽,杜燕,杨向真,施永..基于ZVS变频控制的Si/SiC混合ANPC逆变器损耗评估[J].中国电机工程学报,2023,43(24):9435-9446,中插5,13.
