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讨论了采用整流-逆变-整流主电路结构的典型PWM控制逆变稳压电源电路的非线性模型。该模型将控制器的饱和非线性环节置于一局部反馈环之中，并采用触发器描述PWM控制的开关特性。利用该模型对某实际系统进行了仿真计算，给出了仿真计算结果。
The nonlinear model of a typical PWM controlled inverter power supply with rectifier-inverter-rectifier main circuit is discussed. The model places the controller’s saturation nonlinearity in a local feedback loop and uses flip-flops to characterize the switching behavior of the PWM control. Using this model to simulate an actual system, the simulation results are given.