Contents
What is a PFC choke?
PFC Chokes allow voltage and current waveforms to be in phase, maximizing the power in switch mode power supply circuits. The highly efficient properties of PFC Chokes make them some of the most cost-effective products available.
What does a power factor choke do?
A power factor indicates how far the electrical equipment causes the electric current delivered at the site to be out of phase with the voltage. The ‘PF Choke’ is used to reduce this ‘Out of Phase’ or , in other words ‘Choke’ the Power Factor coming into ECM Module preventing the burn out of its electronics.
What is the PFC circuit power factor correction used for?
A power factor correction (PFC) circuit reduces the harmonic distortion in the supply current and creates a current waveform close to a fundamental sine wave in order to increase the power factor to unity (1).
How does a power factor correction unit work?
Power Factor Correction works by automatically switching capacitors in or out of circuit on a varying electrical load to counteract the negative inefficient effects of motors and machines.
Why do we need power factor correction?
Improving the power factor results in less current being drawn, therefore less electricity costs, less heat and greater longevity of the electrical system. the installation, thus reduces the maximum demand tariff and thereby reducing your power costs.
What does PF mean on an ECM choke?
PF Choke for ECM Motors. PF (Power Factor) is a fraction of power actually used by electrical equipment compared to the total apparent power supplied, usually expressed as a percentage. A power factor indicates how far the electrical equipment causes the electric current delivered at the site to be out of phase with the voltage .
What does PFC stand for in power factor correction?
Our Definition What is PFC? PFC is an acronym that stands for “power factor correction”. Power Factor is defined as the ratio of real (true) power flowing through the load to the total (apparent) power in a circuit.
What kind of current does a PFC choke handle?
The typical PFC choke is handling the differential current which is driven by the switching frequency of the converter. It very much depends on the converter which is between the grid and the motor in order to figure out if a choke might help.
How does a PFC inductor adjust the power factor?
A PFC inductor will try to adjust the value of power factor to make it unity. To achieve this, the effects of the load’s reactance needs to be canceled. The equal and opposite load needs to be added to the circuit to cancel the effects of the load reactance. Both capacitive and inductive effects can be canceled by using inductors and capacitors.