What is meant by PFC

Article Source：   Published：2015/03/02

PFC (Power Factor Correction) power factor correction, primarily to improve the power supply input side effective power and apparent power ratio. Generally does not contain PFC circuit models, the input power factor of only 0.4 to 0.6, and having an active PFC circuit can be up to 0.95 or more, the correlation equation as follows:
                   Apparent power = Input voltage x Input current (VA)
                   Effective power = Input voltage x current x power factor input (W)
Environmental protection point of view: Power Corporation power plant must produce more than apparent power of electricity, the generators can stabilize power supply market demand, and the actual use of electricity is the effective power. If the power factor of 0.5, indicating that emit more than 2VA electricity generators to supply power 1W security needs, its energy operations and poor efficiency. Conversely, if the power factor improvement of 0.95, the power company to issue more than just 1.06VA generator power, 1W power supply needs will be no problem, the better the energy efficiency of operation.