I had some doubt in PWM concepts, they are as follows
1) How to choose the switching frequency ( frequency of carrier signal ) so that the output voltage waveform of the inverter(which drives the induction motor) would have a fundamental frequency of 60hz/50hz.
2) Is the frequency of output dependant on the modulating signal frequency rather than the frequency of the carrier signal.
3) Is varying the modulating index the only way to control the output RMS voltage.
I am sorry for any grammatical mistakes as English is only my second language. Thank you for taking the time to read my queries.
1) How to choose the switching frequency ( frequency of carrier signal ) so that the output voltage waveform of the inverter(which drives the induction motor) would have a fundamental frequency of 60hz/50hz.
2) Is the frequency of output dependant on the modulating signal frequency rather than the frequency of the carrier signal.
3) Is varying the modulating index the only way to control the output RMS voltage.
I am sorry for any grammatical mistakes as English is only my second language. Thank you for taking the time to read my queries.