Electrical Circuits and Modified MasteringEngineering - With Access
Electrical Circuits and Modified MasteringEngineering - With Access
10th Edition
ISBN: 9780133992793
Author: NILSSON
Publisher: PEARSON
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Chapter 17, Problem 26P

(a)

To determine

Find the expression for vo(t) in the given circuit and verify it with PSpice.

(b)

To determine

Find the value of vo(0).

(c)

To determine

Find the value of vo(0+).

(d)

To determine

Find the expression for vo(t) for t>0+ by using Laplace transform method.

(e)

To determine

Mention whether the obtained solution in Part (d) agree with vo(t) for t>0+ from Part (a).

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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 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
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 Tent waveforms if the Q4) A three-phase inverter supplies a 3-phase load, as shown in Fig (2). The load consists of star connected resistance of 1002 in each phase. The inverter supply voltage is 200 V dc, and each inverter switch conducts 180°. (a) Sketch the switching signals for the six transistors. (b) Sketch the line-line voltage for one complete cycle of the output voltage (c) Sketch the line-line voltage for one complete cycle of the output voltage (d) Calculate the rms values of the first five harmonics in the line-line output voltage, including the fundamental. (e) Calculate the rms values of the first five harmonics in the line-neutral output voltage. including the fundamental.) Vac 200V Q1 Q3 Q5 B Q6 b Q2 ww 10Ω Fig2 3 1092 ww 1092
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 A three-phase bridge-inverter is fed from a d.c. source of 200 V. If the load is star-connected of 10 02/phase pure resistance, determine the RMS load current, the required RMS current rating of the thyristors and the load power for (i) 120° firing, and (ii) 180° firing. [Ans (i) 120° firing IL (rms) = 8.16 A, IT(rms) = 9.8 A. Load power = 2000 W. (ii) 180° firing IL (rms) = 9.43 A, IT (rms) = 6.67 A. Load power = 2667 W.]
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