Introduction

From ZDDQ professional engineers: Power systems are designed to operate at frequencies of 50 or 60Hz. However, certain types of loads produce currents and voltages with frequencies that are integer multiples of the 50 or 60 Hz fundamental frequency. These higher frequencies are a form of electrical pollution known as power system harmonics.

Solution

ZD-APF(Active Power Filter). This is a new and promising technology, but there are as yet few distribution feeder installations. Active filters are power electronic converters that inject equal-but-opposite distortion to yield more sinusoidal voltage waveforms throughout a network. Active filters have the advantages of

1. Time-domain operation so that they automatically “tune” to the problem harmonic or harmonics,
2. Current limiting capability to prevent overload by new or unknown sources of harmonics on the network,
3. Multi-point voltage monitoring so that they can simultaneously minimize distortion at local and remote busses.

ZDDQ APF is the best solution of harmonics mitigation.

ZDDQ APF Product series

1. 220V Active Power Filter
2. 400V Active Power Filter
3. 480V Active Power Filter
4. 690V Active Power Filter