Active harmonic filters are filter systems used to filter high frequency disturbances. The type-tested SLV series is designed for expansion and capacity increase with its modular panel structure.
Control Type: High switching frequency IGBT Module
Principle of Operation: Separate filtering on each phase and neutral line
Operation Type: Automatic / Selected harmonics
Connection Type: Pull-out design with plug-in bushing for fast serviceability
Advantages
- Modular module design with plug-in bushing
- Capacitive and inductive bidirectional compensation
- Drawer design with plug-in
- Easy installation and power expansion thanks to modular construction
- Modular design for fast and easy service
- Resonance detection
- 3P and 3P+N connection option
- Filtering up to the 51st harmonic
- Inductive and capacitive directional compensation
Application Areas
- Buildings and Offices
- Industrial Facilities
- Rail Systems
- Iron and Steel Factories
- Cement Factories
- Mine Facilities
- Chemical Factories
- Textile Factories
- Petrochemical Plants
- Port and Crane Facilities
Technical Specifications
- Gerilim: 200 - 480 V (±%10)
- Connection Type: 3 Phase 3/4 Wire
- Switching Frequency: 20 kHz
- Topology: Three-level IGBT-based NPC
- Response time: 25 µs
- Harmonic Filtering: Up to 51st Harmonic
- Efficiency: ≥ 97
- Ambient Temperature: -10 ... +45 Cᶿ
- Automatic load balancing and compensation
Connection Diagram
Filter Graph
| Technical Specifications | |
| Rated Voltage | 200 V - 800 V (±%10) |
| Rated Frequency | 50 Hz |
| Switching Frequency | 20 kHz |
| Capacity (A) | 500 A |
| Line current rating per module (A) | 50, 100, 150 A |
| Neutral current rating per module (A) | Up to 3 times of line current rating |
| Connection Type | 3 Phase 3/4 Wire |
| Inverter technology | Three-level IGBT based NPC |
| Filtration Type | up to 51st harmonic |
| PFC Compensation Target | 1 ± 0,1 Cos phi |
| Redundancy | Any unit can become a master |
| Response Time | ≤ 10 ms |
| Efficiency | ≥ 97% |
| Application | Indoor |
| Protection Class | IP20 (Modul), IP31 (Panel) |
| Color | RAL 9003 / 7015 |
| Ambient Temperature | -10 ... +45 oC |
| CT Configuration / Operation Type | Open/Close cycle for one module, Open cycle in parallel operation |
| Humidity | Max. 95% non-condensing during operation Max. 85% non-condensing during storage |
| Cable Entry | Top entry for wall-mounted module Bottom entry for panel type module |
| Connection type for modules to panel | Plug-in Bushing |
| Maximum number of modules per panel | Up to 6 Modules |
| CT requirements | 3 CT‘s are required (class 1.0 or better, 15 VA) |
| Communication type | RS485 |
| Cooling | 1000 m3/h Air Flow with Metal Fan |
| Controller | 4.3 / 7 inches HMI |
| Dimensions (W x L x H ) | 700 x 1030 x 2100 |
| Standart | EN IEC 61000-6-4:2019, EN IEC 61000-6-2:2019 |
| Wall Mounted Active Harmonic Filters | ||
| AHF.50.400.1W | 50 kVAr, 400 V, 50 Hz Wall Mounted SVG Panel | 378 x 200 x 525 mm |
| AHF.100.400.1W | 100 kVAr, 400 V, 50 Hz Wall Mounted SVG Panel | 503 x 200 x 556 mm |
| Stand-alone Active Harmonic Filters | ||
| AHF.200.400.2.1P | 200 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 700 x 1030 x 2100 mm |
| AHF.300.400.3.1P | 300 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 700 x 1030 x 2100 mm |
| AHF.400.400.4.1P | 400 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 700 x 1030 x 2100 mm |
| AHF.500.400.5.1P | 500 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 700 x 1030 x 2100 mm |
| AHF.600.400.6.1P | 600 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 700 x 1030 x 2100 mm |
| AHF.700.400.7.2P | 700 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 1400 x 1030 x 2100 mm |
| AHF.800.400.8.2P | 800 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 1400 x 1030 x 2100 mm |
| AHF.900.400.9.2P | 900 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 1400 x 1030 x 2100 mm |
| AHF.1000.400.10.2P | 1000 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 1400 x 1030 x 2100 mm |
| AHF.1100.400.11.2P | 1100 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 1400 x 1030 x 2100 mm |
| AHF.1200.400.12.2P | 1200 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 1400 x 1030 x 2100 mm |
| AHF.1300.400.13.3P | 1300 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 2100 x 1030 x 2100 mm |
| AHF.1400.400.14.3P | 1400 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 2100 x 1030 x 2100 mm |
| AHF.1500.400.15.3P | 1500 A, 400 V, 50 Hz Standing Alone Active Harmonic Filter | 2100 x 1030 x 2100 mm |
| Harmonic Active Filter Modules | ||
| AHF.50.400.1M | 50 A, 400 V, 50 Hz Active Filter Module suitable for withdrawable design | 359 x 538 x 200 mm |
| AHF.100.400.1M | 50 A, 400 V, 50 Hz Active Filter Module suitable for withdrawable design | 484 x 646 x 232 mm |
| Type | Size | Download Link | |
| PQ - Power Quality Solutions | 1 MB | Download | |
| AHF-SVG Electronic Based Power Quality Solutions | 1 MB | Download |
What is an Active Harmonic Filter?
An Active Harmonic Filter (AHF) is an electronic system that detects harmonic disturbances in the grid and eliminates them by injecting corrective current in the opposite phase. Active harmonic filter systems automatically detect and filter harmonics up to a frequency of 2.5 kHz. Additionally, filtering can be performed for specific harmonics selected through the control system. It can filter up to the 50th harmonic.
What is the operating principle of an active harmonic filter?
The system, which operates with an IGBT-based inverter structure:
- Continuously monitors the current in the grid
- Analyzes harmonic components (e.g., 5th, 7th, 11th, 13th, etc.) in real time
- Generates corrective current of the same magnitude in the opposite phase
- Separate filtering can be performed on each phase and neutral
- Response time: ≤ 10 ms
- Also provides low-level reactive power compensation
