What is an active filter? What does it do?

What is Active Filter What is its function

Active Power Filter: It is a new type of power electronic installation used to dynamically suppress harmonics and compensate reactive power. It can stop fast tracking compensation for harmonics of different sizes and frequencies. The reason why it is called active is related to passive LC filters and can only passively absorb harmonics of fixed frequencies and sizes, APF can control and actively output the size, frequency and phase of the current by sampling the load current and stopping the separation of each harmonic and reactive power, and respond quickly, offset the corresponding current in the load, complete the dynamic tracking compensation, and can make up both harmonic and reactive power and imbalance.

Function:

1, Filter out current harmonics;

2, improve system imbalance;

3, suppress power grid resonance;

4, with overcurrent, overvoltage, undervoltage, overtemperature, measuring circuit fault, lightning strike and other maintenance functions;

5, full digital operation;

6. Scalability.

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