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UL, Figure P4 The input voltage source vs(t) to the controlled full-wave converter is inductive of...
A controlled full bridge recetifier
Ti Ty Ts T: Figure P5 A controlled full-wave bridge converter has a source of 120 Vrms at 60 Hz, R-25 Ω, L- 10 mH. Assuming that the load constant voltage source E = OV and the gate pulse firing angle is α-45°, determine whether the converter operates in the continuous (CCM) or discontinuous (DCM) conduction mode;
Ti Ty Ts T: Figure P5 A controlled full-wave bridge converter has a source of 120 Vrms at...
i. The speed of a separately excited dc motor is controlled by a one-phase full-wave converter. The field circuit is also controlled by a full-wave converter, see V supply) Vs pk-150V Ra-0.310 L Rf 152O E-63V α. 1-35A Figure 3 The AC supply voltage to the armature and field converters is one-phase, 150Vpeak, 50Hz. The armature resistance Ra-0.31Ω, the field circuit resistance Rf-152Ω, and the motor voltage constant is Kv-1.3V/A. The armature current corresponding to the load demand la-35A The...
The single-phase full converter as shown in Figure 8-1 has an RL load having L = 5 mH, R-0.8 Ω, and E -0 V. The input voltage is Vs = 120 V at(rms) 60 Hz. The delay angle or-α-300 Calculate the performance parameters. Assume ideal thyristor switches. the rms thyristor current IR Figure 8-1 Single-Phase Full Converter T1 T4 太T2 0
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lyue 2 The controlled half-wave rectifier of Figure 3 has an ac input of 120 V rms at 60 Hz, R=20 0, L= 200 mH, and Vdc =80 V. The delay angle a is 30 degrees. Determine (a) an expression for the current, (b) the power absorbed by the resistor and (c) the power absorbed by the de source in the load, R W-0001 th 1.sin(01) Vs Figure 3
Problem 1: (25 points) UL L, ld Figure 1 For the circuit shown in Figure 1, answer the following questions: Suppose vt)340 sin ot V at 60 Hz frequency, Id 15A (Constant). Assuming L,-0, when α-45°, calculate Va,,1, and Pdc. (5 points) Assuming Ls-0, when α-60°, calculate Va and draw the waveforms of US, 5, and vd in separate subplots of the same figure. (7 points) A. B. C. Assuming L,-1 mH, when α-45°, calculate Va, Pac, and the commutation/overlap...
3. A controlled single-phase fiull-wave controlled rectifier is connected in a de motor drive in Figure 4. The de motor armature inductance can be assumed large enough such that any motor curent ripple is negligible. (a) Assuming negligible supply reactance, show that the average rectifier output voltage V, in tems of the supply ms voltage E and the firing angle a, is given by 2/2E (6 marks) cos a _ (b) Given that the supply voltage is 230V, 50HZ and...
Left figure below shows a full bridge inverter with an inductive filter. The switches are controlled 1. to generate the voltage Vbridge as shown in the right figure. Note that the turn-on switches are delayed by an angle 6, leading to periods where Vbridge is zero. load DC DC cT (a) As a first order approximation, we can calculate the fundamental component of the voltage, and do a source replacement using only the fundamental component, as shown below. Find an...
A three phase full-wave AC controller in Figure Q5(a) is supplied to a system with Y connected load system. The load consists of R = 100 and L = 0.01 mH which are connected in series between them. The line-to-line input voltage is given as 208 V with 50 Hz and the delay angle is given as a = 271/3. (1) Calculate the rms value of output phase voltage. (3 marks) (ii) Determine the power factor at output based on...
2. Figure 2 shows a 6-pulse thyristor rectifier feeding a DC static load an operating at steady-state. The ac input power supply is a symmetric set of three-phase voltages forming a direct sequence, having rms line-to-line voltage of Vuns equal to 415 V and angular frequency ω equal to 100π rad/s. The load is sufficiently inductive to smooth out the load current i(t), i.e. i 1, where I is a constant. a. Derive the mathematical expression of the average DC...
Draw a well-labelled circuit diagram of a Buck-Boost converter and draw the equivalent circuit diagrams for its two modes of operation (no waveforms). Label all circuits. [30%] With the help of the circuits in 2(a)(i), explain the working of a Buck-Boost converter. [20%] (ii) (b) Consider the following single-phase, half-wave rectifier circuit that is used to charge a battery through a resistor R. GO v, = Vm sin ot = (i) Prove that the average value of the charging current...