GY-AHF Active Harmonic Filter
Product Short Description
GY-AHF Active Harmonic Filter is an advanced power quality management device designed to detect and compensate harmonic currents in real time. Based on DSP+CPLD digital control technology, it provides fast harmonic suppression, current distortion reduction and three-phase unbalance correction for industrial power systems.
◉ Supports real-time harmonic detection and compensation to reduce current distortion and improve power quality
◉ Advanced DSP+CPLD digital control technology with harmonic detection algorithm and PWM control strategy
◉ Harmonic compensation rate ≥95% for effective harmonic suppression and electrical system optimization
◉ Supports harmonic compensation and three-phase unbalance correction for comprehensive power quality improvement
◉ Fast dynamic response with full response time less than 40ms for changing harmonic loads
◉ Modular design supports parallel connection, flexible capacity expansion and easy maintenance
◉ High-efficiency operation with low power consumption and reliable compensation performance
◉ Intelligent monitoring system with RS485 communication and Wi-Fi support for convenient operation
◉ Suitable for industrial power systems, renewable energy applications, data centers and distribution networks
Product Features
Overview
The working principle of the active power filter device (GY-AHF) is to detect the load current in real time. Based on a specified sub harmonic current detection algorithm, the harmonic current is gradually separated, and a control signal is generated according to the set filtering percentage to drive the IGBT to output a compensation current with the same amplitude and opposite phase as the load harmonic current, achieving harmonic compensation function.
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+threephase 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 | 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%) | 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 | 25A | 7/15/25/50/75/100/ 150/200A |
100A | 100A | |||
| Grid configuration | L/N | Three‑phase three‑wire, three‑phase four‑wire | Three‑phase three‑wire | ||||
| Number of parallel units | No restrictions | ||||||
| Overall efficiency | ≥97% | ||||||
| Switching frequency | 16kHz | 12.8kHz | |||||
| Function selection | Harmonic compensation | Harmonic compensation, Harmonic compensation + three‑phase unbalance compensation | Harmonic compensation | ||||
| Current harmonic compensation range | 2‑50 times, with adjustable compensation rate per time | ||||||
| Current harmonic compensation | Current harmonic compensation ≥95% | ||||||
| Unbalance compensation capability | Unbalance degree after compensation ≤5% | ||||||
| Full response time | < 40ms | ||||||
| Noise level | ≤60dB | ≤65dB | |||||
| Communication method | 2 RS485 communication interfaces (Wi‑Fi supported) | ||||||
| Protection functions | Overload, software/hardware overcurrent, grid over‑undervoltage, grid voltage imbalance, power supply failure, overtemperature, frequency anomaly, short‑circuit protection, etc. | ||||||
| Overload capability | Rated 1.2 times overload for 60 seconds | ||||||
| Installation method | Rack‑mount / Wall‑mount | ||||||
| Cable entry | Rear cable entry (rack‑mount), top cable entry (wall‑mounted) | ||||||
| Protection rating | IP20 (IP54 available on request / customizable) | ||||||
User Manual
GY-AHF Active Harmonic Filter Product Details
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