Problem To achieve a power factor of 0.95 lagging in the circuit below with f=60Hz, calculate the capacitance value that needs to be connected in parallel to the load. +480/0° Vrms 50 kW 0.82 lagging Answer C=546.2 F

Problem To achieve a power factor of 0.95 lagging in the circuit below with f=60Hz, calculate the capacitance value that needs to be connected in parallel to the load. +480/0° Vrms 50 kW 0.82 lagging Answer C=546.2 F

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

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.24P: A source supplies power to the following three loads connected in parallel: (1) a lighting load...

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Concept explainers

Synchronous Motor

The synchronous motor is an AC electric type motor where at a steady-state the shaft rotation is synchronized with the supply current variable-frequency. To an integral number of AC cycles, the rotation period is exactly equal. The stator of the motor in the synchronous motor contains multi-phase AC electromagnets due to which a magnetic field is created that rotates in time with the oscillation of the line current. The rotor contains a permanent magnet and the rotor rotates in synchronization with the stator field at the same rate and provides the second synchronized magnetic field which is rotating in nature as a result. When the synchronous motor is supplied with independently excited multi-phase AC electromagnets on both the rotor and the stator, it is termed as a doubly-fed machine. The most widely used AC-type motors are the synchronous AC motor and the induction AC motors.

Question

Problem To achieve a power factor of 0.95 lagging in the circuit below with
f=60Hz, calculate the capacitance value that needs to be connected in parallel to the
load.
+480/0° Vrms
50 kW
0.82
lagging
Answer
C=546.2μF

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