摘要
为了使逆变器的容量以及输出电压的波形得到改善,该文首次提出了一种级联与并联相结合的逆变器系统。与传统单一的逆变器并联或级联系统相比,该系统吸收了这两种系统特性的优点,提出了单电压多电流的双闭环以及相移技术相结合的控制方式。在系统出现不同调制的情况下,仿真证明了该系统能输出低THD(总谐波畸变)的高质量波形,并能使并联系统的环流得到很好的抑制。
In order to improve the quality and capacity of the voltage waveform exported by inverter,this paper first proposes inverting control system combined with cascading and paralleling.Compare with the cascaded inverter or parallel inverter,this system incorporates the advantages of these two systems.In this paper,the voltage and current double closed-loop control strategy and phase shifted technology are proposed.When the systems is in different modulations,simulation results show that the system can output very low THD（total harmonic distortion）,high quality waveforms.Besides,the circulating current can be effectively damped.
出处
《电气自动化》
2010年第4期17-19,74,共4页
Electrical Automation
关键词
逆变器
级联
并联
相移
谐波环流
inverter cascaded parallel phase-shifted harmonic circulating current
