Low voltage active power filter

1.       Brief introduction

Active power filters are widely used for the reduction of harmonics in the power system caused by nonlinear loads. The shunt active power filter (SAPF) injects a suitable compensating current at a point of the line know as the

The shunt active power filter has proved to be a useful device to eliminate harmonic currents and to compensate reactive power for nonlinear loads. 

2.       Main characteristics

Dynamic power factor correction

Dynamic compensation of any harmonics currents with frequencies up to about 5KHz

Dynamic zero-sequence current compensation

Flexible microcontroller-based implementation

Only one power converter: an inverter with just a capacitor on the DC side.

IGBT power stage capable of compensating harmonics in three phase systems up to 75kVA

Low cost system

3.       Function of APFS

 Main function-compensate current and voltage harmonic

 Additional functions-

 Current-related compensation

Reactive power, current unbalance, neutral current

Using shunt-APF for the most part

Voltage-related compensation

Voltage unbalance, flicker, spikes, regulation

Using series-APF for the most part\

Shunt APF—Eliminate current harmonics, reactive power compensation, balancing unbalcance current

4.       Ordering instructions

Please provide us the following information when place your order

Rated voltage, rated capacity, natural power factor and wiring method of distribution grid or compensated device

Compensation capacity or filter requirements (all the harmonic current content)

Special requirements of protection grade, cabinet color, cabinet size and cabinet installation

Whether reactive power compensation function is needed or not.