Active Harmonic Filter

Reduce THiD to <5%, Avoid social security failures of sensitive equipment caused by grid harmonics

"Geya's Active Harmonic Filters dynamically eliminate 2nd-50th order harmonics in real-time.

✔ CE 73/23 & 93/68 and 89/336 EMC / EMC (C-Tick) compliance guaranteed

✔ 97%+ system efficiency with IGBT-based technology

✔ 50μs ultra-fast response time for critical loads

✔ One monitoring system can connect up to 8 modules, and the system can connect unlimited modules

Proven in 850+ industrial installations worldwide.

Where Our Active Harmonic Filters Excel

Manufacturing Plants

"Solve VFD-induced harmonics in CNC/PLC systems - protect motor drives & reduce downtime"

Data Centers

"Ensure clean power for UPS systems - prevent server crashes and PUE degradation"

Renewable Energy

"Mitigate inverter harmonics in solar/wind farms - meet grid code compliance"

Healthcare Facilities

"Safeguard MRI/PET-CT imaging equipment from harmonic distortion"

FAQ: Active Harmonic Filters (AHF)

1. What is an active harmonic filter?

An Active Harmonic Filter (AHF) curbs electrical distortion. It injects counter-currents to erase unwanted harmonics. Unlike passive filters, it reacts in real time to cleanse power. Non-linear loads, like VFDs and UPS, trigger these distortions.

2. How does a harmonic filter work?

Sensors detect harmonic noise. A controller calculates the correction. An inverter injects counter-currents. This cancels distortions instantly. The process keeps voltage and current smooth, protecting equipment and improving efficiency.

3. What is the working principle of an AHF panel?

An AHF panel operates by:

Monitoring: Continuously measuring harmonic currents via current sensors.

Processing: Analyzing harmonic content using a digital controller.

Compensating: Generating inverse harmonic currents via an IGBT inverter and injecting them into the grid to cancel distortions.