1. 480/690V Active Harmonic Filter AHF Module Overview
Enjoypowers’ 480/690V active harmonic filter AHF module is a three-level inverter power management system used for power harmonics filtering, power factor correction, three-phase load balancing, effectively reducing line loss, and prolonging the service life of power equipment.
Enjoypowers’ 480/690V active harmonic filter AHF’s modular design allows flexibility in installation and integration. It is a preferred power quality solution for all power consumers, system integrators, and OEMs.
2. Active Harmonic Filter Operating principle
Enjoypowers’ AHF is connected in parallel with the nonlinear load and uses a set of current transformers (CT) to detect the load current. It calculates each order harmonic current through the FFT algorithm in its DSP chip, and then generates a compensation current with the same amplitude but opposite phase angle to the detected harmonic current, so as to offset the original load harmonic.
3. Product specification
| Rated voltage[V] | 480/690 | 480/690 |
| Filter characteristics Line current rating [A] | 75 | 100 |
| Reactive power Compensation capacity [kVar] | 50 | 75 |
| Unbalanced kvar and kW compensation | 100% | 100% |
| Dimensions（W*D*H， mm） | 525*626*250 | 525*626*250 |
| Weight [kg] | 50 | 50 |
4 . Active Harmonic Filter AHF Module Features
- High energy efficiency, due to three-level inverter technology
- Integration of load balancing, power factor compensation, and harmonics filtering features into one module
- Hybrid var compensation solution: built-in 16 DO ports to control ordinary capacitors, or RS485 interface to control intelligent capacitor
- Precise compensation, high-speed response, Overall response time <7.8ms
- Load balancing and unloading of neutral wires
- Flexibility and modularity
5. 480/690V Active Harmonic Filter AHF Module Applications
- All types of industrial installations
- Equipment using variable speed drive (VSD) and frequency converter
- arcing equipment: electric arc furnace (EAF), ladle furnace (LF), and arc welding machine
- Switching power supply: computer, TV, photocopiers, printer, air conditioner, PLC
- UPS system
- Datacenter
- Medical equipment: MRI scanner, CT scanner, X-ray machine, and linear accelerator
- Lighting equipment: LED, fluorescent lamp, mercury vapor lamp, sodium vapor lamp, and an ultraviolet lamp
- Solar inverter and wind turbine generators
6. Why choose Enjoypowers？
- Enjoypowers is the top power quality manufacturer in China
- More than 16 years of experience in electronics technology
- Compliance with grid standards and norms
- CE, RoHS, CQC certification, EMC of IEC61000, IEEE 519 compliance
- Suitability for the majority of segments like commercial and infrastructure segments
- Provide customized development of structure, software, hardware, and functions
- Provides complete training and services to continuously empower partners
- Enjoypowers’ products have been successfully delivered in more than 20 countries
7. Download
Enjoypowers Power Quality Solutions SinE-Series Active Harmonic Filter Specification V2.5
Enjoypowers Active Harmonic Filter User manual V2.5
Enjoypowers AHF TUV Certification
8. Vedios
This series of videos introduces the working principle of AHF, how to wire and connect CT, how to set up HMI, how to communicate with AHF, etc.