Active filters are power electronic devices connected in parallel with the load to be compensated. The device can be thought of as a controlled current source, which provides any kind of current waveform in real time. The active filter is equipped with energy storage and a control system enabling it to inject the required current to the network. When connected in parallel with the non-linear load, its harmonic currents are compensated and the network is loaded with fundamental current only. The control system monitors the relevant parameters of the network and is capable of detecting and instantaneously reacting to any disturbance in the load current.
Active filters provide a response time which is extremely fast in comparison with the traditional harmonic filters and power factor correction devices made of passive components. In many control modes, the response time is at the real-time level in micro
seconds. Even when the harmonics are selected by the control system via Fast Fourier Transformation (FFT), the response time is only 20 ms.
Active harmonic filters are used in industrial facilities, hospitals, trade centers etc. Active filters can be programmed according to applications and monitored via PC.
Muda Enerji Active Filter Specification:
|Harmonic Phase Current||25 A||50A||100A||150A||200A|
|Harmonic Notr Current||75A||150A||300A||450A||600A|
|Nominal Voltage||220 - 1000 V|
|Connection||3 Phase 1 Notr - 4 Wire|
|Current Harmonic Dump||2-50. Harmonic|
|Comminication||Ethernet / RS-485|
|Transient Response Time||<1ms|