PWM控制技术是逆变电路中应用最广泛的技术。为了对PWM型逆变电路进行分析，从PWM控制的基本原理出发，首先建立了逆变器控制所需的电路模型，采用IGBT作为开关器件，并对单相桥式电压型逆变电路和PWM控制电路的工作原理进行了分析。使用双踪示波器对电路的输出波形进行分析，给出了仿真波形。实践表明：运用PWM控制技术能够很好地实现逆变电路的运行要求-PWM control of inverter circuit technology is the most widely used technology. PWM inverter in order to analyze the circuit, from the basic principles of PWM control, the first set up the required inverter control circuit model, using IGBT as a switching device, and single-phase bridge voltage-type inverter circuit and the PWM The working principle of the control circuit is analyzed. Using a dual trace oscilloscope to the circuit' s output waveform analysis, the simulation waveform. Practice shows that: the use of PWM control technique able to achieve the operational requirements inverter circuit