Power Factor Controller do they work?

Question

Power Factor Controller do they work?

Answer 1

These come in many variants. The most popular ones are shunt devices such as SVCs. These power electronics controlled devices switch in a variables capacitive reactance to the ground. Capacitance has the effect of building up charge and therefore provides voltage support at the nodes concerned. In traditional parlance, this means "injecting leading VARs". This reduces the phase shift between the voltage and current waveforms and improves the power factor.

Answer 2

simply, a capacitor slows up the current so it is in sync with the voltage during the cycle.  its like a d**n that allows the water rate to be constant even during a flood upstream.

Answer 3

Yes they do and are critical to keep power costs down. They are designed to keep the power factor between .98 and 1. Larger users of electricity are charged on kW hrs and kVA and you must have a power factor correction unit.