二进制式电源阶调逆变器调压技术的仿真

Simulation on Step-Mode Inverter Voltage Regulator Technology of Independent DC

利用脉宽调制技术分别控制独立的二进制式电源的投运,并与阶梯波合成调制技术相结合应用在逆变器领域,PI控制器通过改变PWM占空比实现对输出电压闭环控制,逆变器的输出电压可以通过设定值进行自动调节,使之可以利用在电力系统和中大功率电机调速系统中。研究了阶调式逆变器的拓扑结构及31电平逆变器的设计方法。验证了研制阶调式逆变器的可行性,该阶调逆变器具有电路结构简单,控制方式灵活,所需电力电子器件少,输出波形特性好等特点。

Pulse width modulation （PWM） is employed to control the delivery of independent power supply, and applied in the field of inverter with combination of the ladder wave modulation technology.The closed loop control of output voltage is realized by changing the PWM duty cycle with the PI controller. The output voltage of the inverter can be automatically adjusted by the set value, which enables the application in power system and medium/large power motor speed control system.This article introduces the topology of step-mode inverter and design method of 31-1evelinverter.The step-mode inverter has characteristics of simple circuit structure, flexible control mode, fewer power electronic devices, and good performance of output waveform.