Answer Happy

please solve these a,b,c these are the set I need a correct answer not wrong answer please do it I gave vote please
1. Question answer all of them a. With necessary diagrams and equations, describe the operation of different types of single phase PWM inverters. Compare multiple-pulse and sinusoidal pulse modulation schemes with single phase PWM scheme. b. Draw circuit diagrams of different modes of three phase VSI and draw the output wave shapes of line and phase voltages. c. Describe different control schemes of AC regulators and derive the expressions of average and effective values of output voltages.