The particulars of a shunt compensator with a TSC, as shown in Figure 12.4a, are V = 480 V, f = 60 Hz, X = 1.6 N, 8 = 75°, C = 15 µF, and L switch is operated with mon ing, (b) the peak-to-peak capacitor voltage Ve(pp), (c) the rms capacitor current I, and (d) the peak switch current Isw(pk): 250 µH. The thyristor 1. Find (a) the capacitor voltage Vco at switch- 2 and moff со

The particulars of a shunt compensator with a TSC, as shown in Figure 12.4a, are V = 480 V, f = 60 Hz, X = 1.6 N, 8 = 75°, C = 15 µF, and L switch is operated with mon ing, (b) the peak-to-peak capacitor voltage Ve(pp), (c) the rms capacitor current I, and (d) the peak switch current Isw(pk): 250 µH. The thyristor 1. Find (a) the capacitor voltage Vco at switch- 2 and moff со

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.4P

See similar textbooks

Similar questions

Find a) Percentage overshoot control system having the undamped natural frequency in rad/sec=8.6 and damping ratio =0.8
A 4-quadrant DC chopper with bipolar switching operating at a switching frequency of 2kHz, is connected to a 120VDC source (Vs) and a DC motor which has a counter EMF (CEMF) of 50VDC at rated speed. The armature resistance is 2Ω and the armature inductance is 20mH. Calculate: a) Output voltage with an 80% duty cycle b) Magnitude and direction of the DC armature current with an 80% duty cycle. c) Duty cycle for a forward braking current of 10ADC. (Assume the speed has not changed due to the large inertia of the load.)
Follow up questions.. (b) Pick a pair of values for parameters α and β such that the closed-loop system is stable (c) Pick a pair of values for parameters α and β such that the closed-loop step response is underdamped, exhibiting a settling time of 4/5 seconds and a peak time of π/7 seconds.
A phase control circuit is mainly composed of a TRIAC in series with the load resistance, RL, powered by an AC voltage source (in RMS), VAC. A TRIAC may not fire symmetrically on both half cycles. In this condition, derive the average load voltage. Assume the firing delay angles for positive and negative halves are α+ and α-, respectively.
Using the Ziegler- Nichols method, the critical gain was found to be 4.2 and the critical period was 2.5 min. Find the standard settings for three mode control.
Determine the closed-loop transfer function ( C(s) /R(s)), and determine the second-order system parameters (rise time, max overshoot, peak time, and settling time) if a step test signal is given for the following system.
A 3-phase full converter is delivering a constant load current of 50 amps at 230 Volt DC when its input is 3-phaser, 415 Volt, 50 Hertz. If each thyristor has a voltage drop of 1.1 Volt when conducting, calculate (a) The firing angle delay (b) RMS current of SCRs (c) RMS source currents (d) The power loss in each SCR.(e) Input power factor.
For a unity feed back system, the open loop function is given by, G(s) = 90(S+9) / S2(S+2)(S+6) Determine the following: (i) The value of positional error constant is : (ii) The value of velocity error constant is : The value of acceleration error constant is : Which input signal can give correct error signal value?
Which of the following is a pole value of the closed-loop transfer function of the control system given below
A DC motor has forward transfer function as shown in figure 2(a) is configured in a unity feedback. An amplifier of gain K and path tracking sensor with gain Kf are inserted into the loop as shown in Figure 2(b) to improve the closed-loop response. Calculate the steady-state error specifications for both the uncompensated and compensated systems for unit step, ramp and parabolic inputs. Comment on the type of system and tracking error (steady state error) for different input signals.
11. Why is the conduction angle greater with an inductive load than with a purely resistive load? 12. For a full-wave phase control circuit draw the output voltage and current waveforms when firing angle α = (45-X)° (Here X= 10). Consider the load to be inductive. 13. What point in a single-phase ac waveform is used as a reference point for timing the thyristor gate pulses?
A phase control circuit is mainly composed of a TRIAC in series with the load resistance, RL, powered by an AC voltage source (in RMS), VAC. A TRIAC may not fire symmetrically on both half cycles. In this condition, derive the RMS load voltage. Assume the firing delay angles for positive and negative halves are α+ and α-, respectively.