3 phase induction motor drive

Discussion in 'General Electronics Chat' started by tgovender0, Mar 3, 2010.

  1. tgovender0

    Thread Starter New Member

    Feb 26, 2010
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    0
    howzit guys, I am designing a three phase pwm inverter to control a three phase induction motor, this must be done manually so no microcontrollers and pwm ic's. I am using spwm method, so i need to generate a three phase sine wave and compare it to a triangular wave through a comparator. I have attached some results from my cct but i can only get a sine wave at 0 degree's, how do i get the sine waveforms for 120 and 240 degrees.?
    Thanks
     
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