inverter w/ bipolar PWM output

Discussion in 'Homework Help' started by notoriusjt2, Dec 6, 2010.

  1. notoriusjt2

    Thread Starter Member

    Feb 4, 2010
    The DC source supplying an inverter with a bipolar PWM output is 250V. The load is an RL series combination with R=20Ω and L=50mH. The output is 160V rms at the fundamental frequency of 60Hz. If the frequency modulation ratio is mf=31, determine the total harmonic distortion(THD) of the load current.

    1.1%, 1.3%, 1.5%, 3.7%, 4.4%


    here is a small excerpt of that table


    so in this instance I will be using the coefficients under ma=0.9

    going on.....


    I know this is a lot to take in, but does this seem correct? am I correct on my RMS values for all of the I's