全数字化逆变电源并联系统环流特性分析

Characteristics of Circulating Current in the Parallel Power System with Inverters Based on Fully Digitized Control

分析了模块化SPWM逆变电源并联系统的环流工作特性和均流控制机理 .针对全数字化控制SPWM逆变电源的电压调制特性以及死区和公共负载等非线形因素的影响 ,研究了并联电源系统的较高次谐波特性以及谐波环流对并联系统运行和输出电压特性的影响 .

Focusing on the influence of some nonlinear factors such as dead time, we have given the voltage modulation characteristics of inverters under fully digitized control and common load, detailed comparison and analysis about circulating current operating characteristics of SPWM inverters in parallel operation in this paper. The characteristics of higher order harmonics and the influence of harmonic circulating current to operation of parallel system and output voltage characteristics are also analyzed deeply.