中文摘要：

基于单相全桥逆变换器主功率器件（功率开关管,功率二极管及磁性元件等）物理模型,分析其各功率器件在相关主功率回路中工作特性及相应损耗特性.在此损耗计算基础上建立相应主功率回路功率器件损耗数学建模,同时基于此损耗数学模型提出了一种损耗最小频率法——优化调制频率法,从而使逆变换器工作在此调制频率下主功率回路相关主功率器件损耗得到有效降低,最后在实验室完成了一台2 kW的实验样机用于验证.

英文摘要：

The power loss of main circuit based on the single full bridge inverter was introduced in this paper. Using the physics loss model of the power switches, power diode and magnetic component, the working characteristics of main power component and the loss characteristics of main circuit power devices based on this power loss characteristics, were analyzed and a mathematical model of the main circuit power loss was developed. At the same time, the optimistic module frequency could be obtained from the main power loss mathematic model.The main devices power loss could be efficiently reduced when the switches operated at this optimistic module frequency. At last, a 2 kW inverter prototype was built to verify the theory.