1. In the three-phase PWM inverter system shown below, parameters of the system are: V=740V, fi-75Hz, VEMFI-1204-30, V-1.0V, ma=0.9, Ra-29, La-10mH, f-12kHz. a. Determine the RMS phase current at the fundamental frequency. (hint: determine line to line RMS voltage at the fundamental frequency using class notes, calculate phase voltage, calculate phase impedance at base frequency, subtract VEMF from fundamental phase voltage and divide by impedance). b. Determine the RMS harmonic current at (2m+1)fi. (hint: use the harmonic table, apply interpolation, calculate harmonic voltage at requested frequency, calculate RMS phase voltage, calculate impedance at requested frequency, divide phase voltage by impedance to calculate current). Te m