Chapter 8, Problem 8.10P

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Please write all the Formulas clearly for each case first, then solve the question by hand on paper and send a clear photo of the solution. Thanks a lot Power Electronics Q1) For the circuit shown in Fig (1). (a) Draw the output voltage and load current waveforms if the load is inductive. Explain the working of each device. (b) If Vs 220V, load resistance is 10 2 and output voltage frequency is 50Hz. 1. What is the rms value of the load voltage? 2. Obtain Fourier series expression of the output voltage up to 7th order harmonic. 3. Draw the frequency spectrum of the output voltage wave up to 7th order harmonic. T₁ D₁ D Vo T₁ D4 Fig 1 Load T₂ D

Please write all the formulas clearly for each case first, then solve the question by hand on paper and send a clear photo of the solution. Thanks a lot 6 A three-phase transistor voltage-source inverter supplies a three-phase load, as shown in Fig.8.41. The load consists of star connected resistance of 10 in each phase. The inverter supply voltage is 200V d.c. and each inverter switch conducts for 120°. (a) Sketch the switching signals for the six transistors. (b) Sketch the line-to-neutral voltage for one complete cycle of the output voltage. (c) Sketch the line-to-line voltage for one complete cycle of the output voltage. (d) Calculate the rms values of the first five harmonics in the line- to-line output voltage, including the fundamental. (e) Calculate the rms values of the first five harmonics in the line- to-neutral output voltage, including the fundamental. [Ans: (d) VL-L=244.95 V, (e) Vph = 141.42 V] Q1 Q3 Q5 Vdc 200V b Q4 Q6 Q2 Fig.8.41. 120° conuction ww 102 w 1052 ww n 1052