中国电机工程学报2012，Vol.32Issue(24)：23-29,7.
大功率三电平逆变器开关动态特性在线测试方法研究
An On-line Test Method of Switching Dynamic Performances in High Power Three-level Inverters
摘要
Abstract
The on-line test of dynamic performances in high power three-level inverters is one of the important parts in power electronics inverter research fields. Multiple-level inverters have many devices and complex topologies, so it is difficult to accomplish the on-line test of the switching dynamic performances. However the online test plays significant roles in highly efficient inverter system design, condition monitoring, precaution against malfunction and reliability improvements in inverters. This paper worked on an on-line test method of switching dynamic performances of the high power three-level inverter, and brought out the conception of state testability of power device switching modes in multiple-level inverters. The method presented in this paper solves some key problems in the on-line test very well, including mass data transmission and process, simultaneously detecting device states in all modes, high speed sampling during power device switching, direct and indirect extraction and calculation of system parameters, and so on. At last, the on-line test has successfully been applied in 750 kVA 3-level VWF system in different load conditions. Moreover, the on-line test method and system can also be effectively used for other multiple-level inverters.关键词
三电平逆变器/开关动态特性/在线测试/状态的可测性Key words
three-level inverter/ switching dynamic performance/ on-line test/ state testability分类
信息技术与安全科学引用本文复制引用
何湘宁,杨兵建,吴岩松,吴建德,邓焰..大功率三电平逆变器开关动态特性在线测试方法研究[J].中国电机工程学报,2012,32(24):23-29,7.基金项目
国家自然科学基金项目(50737002) （50737002）
国家科技重大专项(2011ZX02604-001). （2011ZX02604-001）
