PWM控制输出并通过LED显示PWM值并据有电压电流保护报警输出功能-PWM control output and PWM LED display value and according to a voltage-current protection alarm output function

基于PWM控制的三相逆变器，采用PI调节，输出电流电压波形稳定。(The three-phase inverter based on PWM is controlled by PI, and the output current and voltage waveform is stable.)