A dc source supplies an inverter with bipolar pwm control


A DC source supplies an inverter with bipolar PWM control. The effective value of the output voltage on the fundamental frequency of 50 Hz is 220 V. The load is a serial R-L connection with a resistance R = 10 Ω and an inductance L = 50 mH.

(a) Specify the amplitude modulation ratio if the DC voltage is 444 V.

(b) If the frequency modulation ratio is 21, determine the THD of the load current.

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Electrical Engineering: A dc source supplies an inverter with bipolar pwm control
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