摘要
逆变器损耗研究一直是电力电子领域的一个重要研究方向。现有方法大多依赖于器件厂商提供的数据手册,但是这些数据的提取环境为标准测试环境,与实际工况并不一致。本文提出一种基于IGBT离线测试平台的准在线建模方法,用该方法分析与等效逆变器的各种换流模式、调制方法和负载类型,借助离线测试平台模拟逆变器实际工况下的换流模式、驱动情况、缓冲电路以及杂散参数等工况,并调用测试平台建立的开关动态特性多维数据库得到逆变器实际工况下各开关工作点的开关能量损耗,最终计算出功率逆变器的损耗。与实测损耗的对比证明了该准在线建模方法的正确性。该建模方法对散热器的选取、高效率逆变器结构的优化设计具有重要的参考价值。
The inverter loss is an important research field in Power Electronics. Most loss calculation methods always take advantages of the manufacturer's datasheets, whose testing conditions are different from the actual working ones. In this paper, the quasi-online modeling method of the inverter losses based on IGBT offline test platform is proposed. The modeling method considers commutation modes, modulation methods and different loads, and simulates actual working conditions such as commutation modes, the driving situation, the buffer circuit, stray parameters and so on. Then, by invoking the switching dynamic performance multiple-dimension database, the proposed method obtains the IGBT switching losses and figures out the inverter total loss under actual working conditions. The quasi-online loss modeling method's validity is verified by the actual measurement. This modeling method can play an important role in the heatsink selection and structure optimization design of high efficiency power inverters.
出处
《电工技术学报》
EI
CSCD
北大核心
2014年第6期1-6,共6页
Transactions of China Electrotechnical Society
基金
国家科技重大专项课题(2011ZX02604-001)
国家重点基础研究发展计划(973)项目子课题(2012CB215106)
欧盟FP7国际合作项目"HEMOW"(FP7-IRSES-269202)
