Suppose a three‑phase uncontrolled bridge recfier is required to produce an RMS voltage across the load of at least 380 V.
What must the minimum amplitude of the recfier's input sinusoidal phase voltage be?
Suppose a three‑phase uncontrolled bridge recfier is required to produce an RMS voltage across the load...
Derive the expressions of the average and rms values of the load voltage and current in three-phase uncontrolled bridge rectifiers with resistive load. Draw the waveforms of supply voltage (line-line voltages), transformer phase current (only one phase), load voltage, load current and diode current.
1. (10 PT) A three-phase bridge rectifier circuit shown in the figure phase voltage of 220 volts rms. A load of 100 Ω is connected across is supplied by a rectifier. Both the primary and secondary windings of transfor Assume the transformer has a turns ratio of unity mer are Y-connected a) 3 PTI On the top of voltage plot on next page indicate the diodes that will be conducting during different intervals of time. b) 17 PT] Plot the...
A voltage of 220V (rms) line to line voltage is applied across a three phase Y connected resistive load. Each phase of the Y, connected loads has a resistance of 127Ω. i) Find current through each phase i) Find the total three phase power ii) Find the power factor of the load
Note Unless otherwise specified, three phase systems are rated in terms of their line-to-line rms voltages So, for instance, a three-phase 230 kV transmission line has an rms phase voltage of 230/V3 kV. If you encounter a three-phase system specified with two voltages, e.g., 480/277 V, that implies that the line-to-line rms voltage is 480 V and the rms phase voltage is 277 v. Problem 8 The line-to-line voltage of a three-phase transmission line is Vbc-120 2.20° kV. Suppose the...
bridge oad DC DC Vload DC For a single-phase DC-AC inverter with an RL load at the output. It is switching using the bipolar SPWM method with the desired fundamental frequency of 400 Hz and the switching frequency of 20.4 kHz. Here the modulation index is 0.6, input DC is 200 V, load R-5 Ω and L 2 mH a. What's the RMS value of the fundamental component of the output voltage across RL? b. What's the RMS value of...
Fill in the blank(s) with the appropriate word(s) The three phase fully controlled bridge converter is obtained by replacing six _________ of an uncontrolled converter by six __________. Version 2 EE IIT, Kharagpur 7 The pulse number of a three phase fully controlled bridge converter is _________. In a three phase fully controlled converter each device conducts for an interval of __________ degrees. iv) In a three phase fully controlled converter operating in continuous conduction there are ________ different conduction...
Problem 7 Three three-phase wye-connected loads are in parallel across a three-phase supply. The first load draws a current of 10 A at pf- 0.93 (leading), and the second and third loads (each) draw a current of 20 A at pf= 0.85 (lagging). Suppose the line-to-line voltage is 240 V. Compute the following: a) The transmission line current b) The load power factor c) The complex power supplied by the source Problem 7 Three three-phase wye-connected loads are in parallel...
2.11. A 4157-V rms, three-phase supply is applied to a balanced Y-connected three-phase load consisting of three identical impedances of 48236.87°2. Taking the phase to neutral voltage Van as reference, calculate (a) The phasor currents in each line. (b) The total active and reactive power supplied to the load.
Referring to the three-phase circuit in Figure 2, find the line currents, the voltage across the load, and the average power absorbed by the connected delta load with ?∆ = 21 + ?24Ω. 100/0° Vrms 1Ω j0.5 Ω -- ΖΑ 100/-120° Vrms 1Ω j0.5Ω ΖΑ ZA 100/120° V rms 1Ω j0.5 Ω
help with number 1 please 1. The cireuit shown to the right is a bridge rectifier. The output voltage, Vour, is taken across the load resistor in the middle of the bridge a. I built this circuit in an attempt to make a full wave rectifier, but it does not work! What do I need to do to fix it and why? Tell me how to fix it and draw the correct circuit. (You may want to complete Part (b)...