Electrical Engineering ⇒ Topic : Calculations of Power Factor Correction
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Sunita
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Calculations of Power Factor Correction From Figure 1 (a), the inductive load (R-L) originally takes current I from the source and its power factor is cos Φ1 i.e., I lags behind the voltage V by an angle Φ1 (Figure 1 (b)). Let a capacitor C be connected in parallel with R-L load. So, its current lc is leading in nature and it will partly cancel the reactive component of I and the current drawn by the source will be I' where I' < I and the power factor of the circuit becomes cos Φ2, where cos Φ2 > cos Φ1. From Figure 1 (d)
FIGURE (1) From Figure (2), the reactive power supplied by the capacitor is FIGURE (2) The desired result can be obtained if the kVA supplied by the p.f. correction equipment is known. | |
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