机构地区: 河北工业大学电器研究所,天津300130 常熟开关制造有限公司,江苏省智能电网配用电关键技术研究重点实验室,江苏常熟215500
出 处: 《电器与能效管理技术》 2017年第16期52-56,共5页
摘 要: 针对三电平逆变器中存在母线中点电压不平衡的现象,以单相非对称式逆变器为研究对象,分析了母线中点不平衡的原因,提出了一种基于三电平模式切换的中点控制方法。通过仿真和试验验证,所提方法简单、对模型参数依赖小、可靠性高。 There is bus neutral-point voltage unbalance phenomenon in three level inverters,so the study of the problem is mostly based on the three-phase system,the little is on the single-phase system.Based on the singlephase asymmetric inverter,this paper analyzed the causes of the neutral-point unbalanced of the bus,and introduced a control method on three level mode switching.This method is simple,less depending on the model parameters and reliable.