January 2013
Intermediate to advanced
598 pages
22h 47m
English
Content preview from Electrical Technology, Volume 1
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20
Power Factor Correction
OBJECTIVES
In this chapter you will learn about:
- The need for power factor correction
- Power factor correction
- Active and reactive power
- Types of compensation
- Individual p.f. correction
- Group p.f. correction
Bank of capacitors for p.f. correction
20.1 INTRODUCTION
If the load in an alternating-current circuit has only resistance, it will dissipate an active power P = VIa. If the load is a pure reactance, it will take a reactive power Q = VIr. Only rarely in practice are electrical devices pure resistances or pure reactances. Usually, they are a combination of both, and most often they consist of a resistance and ...
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