What is power factor correction?
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In an electric power system, a load with low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. A device that draws an apparent power of 1kVA and has a 0.5pf consumes 500W, not 1kW. Power factor correction (PFC) is, essentially, what you do to complex AC loads, such as switch mode power supplies, to make them act more like simple loads, such as toasters. |
EE Times India
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