【摘要】 由于逆变器输出的电流、电压的非线性，精确测量其效率一直是国内外亟待解决的难题。文中分析、比较了测量逆变器效率的三种方法后，提出采用模拟相乘方法作为硬件处理方案。在数据采样、计算的软件处理中，采用准同步采样及其算法。这种测量方法达到了相当高的准确度而且在硬件方面比较容易实现更多还原

【Abstract】 Because of non linearity of output voltage and current of the inverter,accurate measurement of inverter efficiency has always been a difficult problem around the world and demands prompt solutions.In this paper,three methods to measure the efficiency of inverter have been discussed and compared. Based on the conclusion, analog multiplication method is employed. For data acquisition and calculation,a quasi synchronous sampling algorithm is used in the software.This measuring method has acquired high accuracy with simple hardware congifuration.更多还原