Power Factor Correction aims to improve power factor, by having causes of bad power factor such as inductive loads, transformer, power rectifiers and welding instruments offset by using capacitors and Power Factor Correction Controllers . The immediate result will be from cost savings on electricity and extending the lifespan and capacity of electrical appliances in your production assets while reducing downtime due to nuisance tripping of circuite breakers or fuses.
WHY DO I NEED GOOD POWER FACTOR?!
Poor power factor has direct implications to your business. Low power factor penalties is one of the major challenge face by business. Having an ideal electrical system improves electrical infrastructure and equipment capacity and helps your operation to save money.
Benefits of Power Factor Correction
With power factor equal to 1 or as close as possible, there are lower losses and all power generated is utilized efficiently.
PASSIVE PFC - Capacitor Bank
Power factor can be improved by either increasing the active power component or reducing the reactive component. Reactive power from a capacitor bank is commonly used to improve power factor to unity. However, capacitors has low impedence and easily affected if harmonics is present in the system.
ACTIVE PFC - Active Harmonic Filter
AHF works as a controlled current source providing any kind of current waveform in real time. AHFs monitor the currents of the load and compensate any produced harmonic currents by generating a compensation current for each selected harmonic order in phase opposition to the harmonic current. . It addresses harmonics from a system point of view and can save significant cost/space in many applications.
⦾ Simple and rugged circuitry
⦾ Cost-effective at low power circuit
⦿ Not able to completely correct non-linear loads
⦿ Bulky and heavy magnetics required
⦿ Not a source of EMC
⦿ Control by steps
⦿ Response time 5-10 mins
⦾ Small and light components
⦾ High Power Factor = 0.99
⦾ Comply with IEC61000-3-2
⦾ Great flexibility and control
⦾ Good EMC characteristics
⦾ Stepless Control
⦾ Response time <200us