With pulse width according to the sine law of change and equivalent sine wave inverter PWM waveform of SPWM waveform control circuit switch on-off device, the output of the area of the pulse voltage and the hope of the output sine wave in the area of the corresponding interval equal, by changing the frequency and amplitude modulation wave is adjustable frequency and amplitude of the output voltage inverter circuit

spwm\current_SPWM.mdl
....\current_SPWM.mdl.r2010b
....\current__123 (2).mdl
....\current__123.mdl
....\PMSMk_.mdl
....\untitled.fig
....\三相电压.png
....\三相电流.png
....\永磁同步电机.PNG
....\转速_转矩_磁链.png
spwm

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