Illustrate balanced delta-connected load, Electrical Engineering

Assignment Help:

Next, let us consider the case of a balanced delta-connected load with impedance of 5 45° supplied by a three-phase, three-wire 100-V system, as shown in Figure (a). We shall determine the line currents and draw the corresponding phasor diagram. With the assumed positive phase sequence (A-B-C) and with ¯VBC as the reference phasor, the line-to-line voltages ¯VAB, ¯VBC, and ¯VCA are shown in Figure. The rms value of the line-to-line voltages is 100 V for our example. Choosing the positive directions of the line and phase currents as in Figure(a), we have

2166_Illustrate Balanced Delta-Connected Load.png

By the application of Kirchhoff's current law at each of the vertices of the delta-connected load, we obtain

858_Illustrate Balanced Delta-Connected Load1.png

2349_Illustrate Balanced Delta-Connected Load2.png

2162_Illustrate Balanced Delta-Connected Load3.png

The phasor diagram showing the line-to-line voltages, phase currents, and line currents is drawn in Figure(b). The load power factor is lagging, and is given by cos 45°. For a balanced delta-connected load, the phase voltages and the line-to-line voltages are equal in magnitude, and the line voltages are in phase with the corresponding phase voltages.

1261_Illustrate Balanced Delta-Connected Load4.png

The line currents, in magnitude, are √3 times the phase currents, and the phase currents lead the corresponding line currents by 30°. The preceding example can also be solved by the one-line equivalent method for which the delta-connected load is replaced by its equivalent wye-connected load. The single-line equivalent circuit is shown in Figure(c). The details are left as an exercise for the student.


Related Discussions:- Illustrate balanced delta-connected load

What are shift register counters, What are Shift Register Counters? Two...

What are Shift Register Counters? Two of the main common types of shift register counters are the Ring counter and the Johnson counter and They are basically shift registers wi

Pn-junction under bias, Q. pn-Junction under Bias? Let an external sour...

Q. pn-Junction under Bias? Let an external source be connected between the p- and n-regions, as shown in Figure (a). (b) shows the circuit representation of the pn-junction or

Explain basic principle of linear sweep voltage generator, Q. Explain the b...

Q. Explain the basic principle of linear sweep voltage generator A linear time base generator or sweep generator is one that provides an output waveform, a portion of which exh

Transmission line, A three-phase transposed line is composed of one ACSR co...

A three-phase transposed line is composed of one ACSR conductor per phase with flat horizontal spacing of 11 meters as shown in Figure (a). The conductors have a diameter of 3.625

DC Generator, What is Commutator? Explain in brief about the Commutator act...

What is Commutator? Explain in brief about the Commutator action in dc generator.

What are hard magnetic materials, What are hard magnetic materials? Har...

What are hard magnetic materials? Hard Magnetic materials- They have a slowly rising magnetization curve along with large hysteresis loop area and therefore large energy losses

Controls and system, transfer function of Lube Oil Cooler Temperature

transfer function of Lube Oil Cooler Temperature

How can a jfet be used as a voltage controlled resistor, Q. How can a JFET ...

Q. How can a JFET be used as a voltage controlled resistor. Explain from drain characteristics? The region to the left of the pinch off locus is referred to as the ohmic region

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd