Question: A three - phase PWM bridge voltage source converter feeds a power of 2 5 kW from 4 1 5 V ( L - L

A three-phase PWM bridge voltage source converter feeds a power of 25 kW from 415V (L-L)rms,50Hz,3-phase ac mains to a 660V DC bus. The switching frequency is 5 kHz and acinductor is 10mH. The power-factor is corrected close to unity. Determine (a) PWM modulationinder, (b) fundamental rms ac current, (c) the converter fundamental voltage, and (d) phaseshift in fundamental component of VSC voltage and supply voltage.

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