GY-AHF Active Harmonic Filter Cabinet
GY-AHF Active Harmonic Filter Cabinet is an integrated power quality solution designed to reduce harmonic distortion and improve electrical system stability. Featuring advanced digital control technology and modular cabinet design, it provides effective harmonic compensation for industrial power systems.
Supporting flexible installation and parallel operation, GY-AHF helps improve power efficiency, protect sensitive equipment, and maintain reliable operation in manufacturing plants, commercial facilities, and other applications with nonlinear loads.
•Advanced Harmonic Compensation — Effectively mitigates 2nd–50th order harmonics with a compensation rate of ≥95%, improving overall power quality and system stability.
•Broad Voltage Compatibility — Designed for various electrical networks, supporting AC220V, 380V, 500V, 690V, and 800V power systems.
•Scalable Compensation Capacity — Available with rated compensation currents from 100A to 900A, meeting the requirements of different industrial power applications.
•Integrated Power Quality Correction — Provides both harmonic filtering and three-phase unbalance compensation, reducing residual imbalance to ≤5%.
•High-Speed Dynamic Response — Achieves a full response time of less than 40ms, enabling fast correction of rapidly changing harmonic loads.
Product Features
Overview
The active power filter device (GY-AHF) mainly consists of AC distribution, AHF module, monitoring system, etc. The active power filtering device (GY-AHF) connects the voltage source inverter in parallel to the power grid through a filter. By detecting the load current in real time and using a specified sub harmonic current detection algorithm, the harmonic current is gradually separated. According to the set filtering percentage, a control signal is generated to drive the IGBT to output a compensation current with the same amplitude and opposite phase as the load harmonic current, achieving the function of harmonic compensation. Adopting modular design, high integration, easy and flexible installation.
Performance characteristics
(1) DSP+CPLD full digital control core, three-level topology technology, advanced harmonic detection algorithm and PWM control strategy.
(2) Modular design allows multiple modules to be connected in parallel, with small footprint and easy maintenance.
(3) The independent air duct and independent plate compartment structure design ensure the stable operation of the equipment.
(4) 100% current limiting output can be set to ensure long-term stable operation of the equipment.
(5) Supports optional modes of harmonic compensation, harmonic compensation+three-phase unbalance compensation.
(6) Current harmonic compensation capability: compensation rate ≥ 95%.
(7) Unbalance compensation capability: The imbalance degree after compensation is ≤ 5%.
Technical Parameter
| Model | 220V | 380V | 500V | 690V | 800V | |
| Altitude | <2000m; above 2000 m, derate according to GB/T 3859.2 | |||||
| Ambient temperature | -10 ~ +50℃ (above 40 ℃, capacity derating ≤30%) | |||||
| Relative humidity | ≤90% relative humidity, no condensation on the surface at a monthly minimum temperature of 25 ℃ | |||||
| Pollution degree | Pollution degree ≤ Class III | |||||
| Operating voltage | AC220V (-20%~+20%) | AC380V (-20%~+20%) | AC500V (-20%~+20%) | AC690V (-20%~+15%) | AC800V (-20%~850V Max) | |
| Operating frequency | 50Hz/60Hz (45Hz~63Hz) | |||||
| Rated compensation capacity | 100A~900A | 100A~600A | 100A~600A | |||
| Grid configuration | Three‑phase three‑wire, three‑phase four‑wire | Three‑phase three‑wire | ||||
| Overall efficiency | ≥97% | |||||
| Switching frequency | 16kHz | 12.8kHz | ||||
| Function selection | Harmonic compensation, harmonic compensation + three‑phase unbalance compensation | Harmonic compensation | ||||
| Current harmonic compensation capability | Current harmonic compensation ≥95% | |||||
| Current harmonic compensation range | 2nd to 50th harmonics, adjustable individual compensation rate | |||||
| Unbalance compensation capability | Unbalance degree after compensation ≤5% | NO | ||||
| Full response time | <40ms | |||||
| Noise level | ≤75dB | |||||
| Communication method | 2 RS485 communication ports (Wi‑Fi supported) | |||||
| Protection functions | Overload, software/hardware overcurrent, grid overvoltage/undervoltage, grid voltage unbalance, power supply failure, overtemperature, frequency anomaly, short‑circuit protection, etc. | |||||
| Overload capability | Rated 1.2 times overload for 60 seconds | |||||
| Installation method | vertical installation | |||||
| Cable entry | Entering the upper line and entering the lower line | |||||
| Protection rating | IP20 (IP54 customizable) | |||||
| Cooling method | Forced air cooling | |||||
| Weight | Related to capacity, maximum 450KG | Related to capacity, maximum 620KG | ||||
User Manual
Frequently Asked Questions About GY-AHF Active Harmonic Filter Cabinet
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