PF is the abbreviation of Power factor, which refers to power factor, which is the ratio of active power to apparent power; PFC is the abbreviation of Power Factor Corrector, which refers to power factor correction; high power factor can:
1) Reduce current harmonics;
2) Increase power system capacity;
3) Reduce line loss and save electric energy.
Low power factor means low power efficiency. The lower the power factor value, the higher the proportion of power consumed in the distribution network. If the low power factor is not corrected, the power company must provide greater power in addition to active power. Reactive power, which results in the need for larger generators, transformers, transmission lines, etc., to compensate for losses. A power supply with PFC function can improve its own energy usage, reduce losses, and also reduce harmonic pollution to the power grid.