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EPS series Active Power Filter


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Working principle
When the active filter is energized, the pre charge group of capacitors on the DC bus for charging, the whole process lasted in a few seconds, aim to prevent power on to the DC bus capacitor instantaneous impact. When the DC bus voltage reaches the preset voltage, the pre charge circuit disconnect. DC capacitor as the energy storage component, the output compensation current outwards through a IGBT inverter. Active filter by a group of circuit transformer acquisition with the load current signal is sent to the control board, through the Power PC calculation, the fundamental and harmonic separation, will need to send the compensation of numerical driving circuit, trigger IGBT inverter to compensate the harmonic current injected into the grid so as to eliminate harmonics, power factor compensation etc.

Power Sine active filter has advantages
Full Range: 3 line \4 line filter can filter out each harmonic current in the range of 2 ~ 50 times, can compensate setting for each time’s harmonic.;
Dynamic inject system compensation current, the filtering performance will not be affected by the system and the load;
Dynamic response to the change of the system load, the response time less than 100 μ S
Perfect function: eliminate harmonic, power factor compensation, three-phase load unbalanced compensation, flicker compensation can be realized at the same time, can also be free to choose;
With automatic current limiting function, no need to worry about overload, automatically eliminate harmonic harm;
Easy installation, convenient and easy to expand, can have multiple different current specifications of filter in parallel operation;
Single cabinet equip with a separate controller, a plurality of parallel operation does not cause interference;
Running and debugging the system is relatively simple, easy for operation. Modular design, less than 15 minutes average maintenance time and greater than 100000 hours no failure operation time.


Relying on the most advanced numerical control technology, with a faster, smaller,higher performance. These advantages make enough to improve quality of electric energy is more simple, convenient

Reliability: eliminating interference related types in distribution line
Cost saving: avoid / reduce the loss of electrical equipment and power lines and transformer overheating
Efficiency: eliminate the loss of production caused by the shutdown
Flexible: adapt to the capacity of combinatorial topology
Quick response: fast compensation to avoid harmful interference
Economy: by reducing wattless power, reduce energy costs
Structure: compared with the traditional filter more saving space and installation time


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