Active Harmonic Filters for High-Efficiency Grid Correction
Advanced Power Quality Solutions: Active Harmonic Filters (AHF)
Bringing your grid severe harmonic pollution, the non-linear loads like variable speed drives, LED arrays, and switching power supplies can easily cause your equipment to overheat, nuisance breaker tripping. So your power will end up with costly utility penalties. Our active harmonic filters deliver you:
Active Cancelation: Active cancelation to eliminate harmonics up to the 50th order.
100% Global Grid Compliance: Strictly IEEE 519 and EN 50160 power quality standards compliant.
Maximum Efficiency: Stabilizing your power factor up to 0.99 to eliminate your utility fines.
Future-Proof Modular Design: Supports your plant’s power demands as they grow with flexible plug-and-play expansion.
Active Harmonic Filters — Core Technical Specifications
| Technical Data | Factual Engineering Specifications |
|---|---|
| All-In-One Functional Integration | AHF + SVG + ALB, integrated in one unit. |
| Nominal Voltage Compatibility | 200V – 480V (3W), 200V – 440V (4W), optional 690V |
| Grid Frequency Adaptation | 50Hz / 60Hz auto-selection |
| Circuit Configuration Matrix | 3-wire or 4-wire selectable |
| Base Module Current Ratings | 25A, 50A, 100A, 150A, 200A (per unit) |
| Dynamic Injection Response Time | <100μs response time |
| Circuit Inverter Architecture | 3-level topology |
| System Scale Scalability | Modular, scalable via parallel modules |
Dynamic Harmonic Mitigation for High-Precision Operations
Unlike traditional filters reacting slowly to fast-moving grid spikes, our active harmonic filters provide grid current corrections within microseconds with a 3-level NPC topology.
Zero Acoustic Humming
Operated at a high switching frequency (20 kHz to 35 kHz), our harmonic filters eliminate noisy harmonic vibrations.
Ultra-Precise Pure Power
Perfectly erasing microscopic ripple currents to protect your sensitive equipment, our filters are ideal for hospital, laboratory, and data center electronics.
To ensure maximum uptime for systems and assembly lines, our active harmonic filters provide you with a parallel master-slave architecture. The remaining units instantly share the load with zero interruption if one module fails.
Furthermore, the built-in thermal sensors may trigger the smart soft derating function once your switchgear room temperatures exceed 40℃. So, our filters safely protect your internal electronics while maintaining active grid stability, instead of shutting down.
For your unstable grids management, our active harmonic filters provide you a 7-inch color touchscreen HMI. They allow you harmonic cancellation by erasing grid pollution.
Stabilizing three-phase power, they help you with load balance and stepless reactive compensation. If the distortion is low, our filter system automatically redirects the capacity to lock your power factor at an optimal 0.99.
Totally slashing your utility penalties.
Active Harmonic Filters: Technical Performance & Value
| Parameters | Technical Details | What It Means for You |
|---|---|---|
| System Architecture Configuration | 3-wire or 4-wire selectable | One product covers industrial and commercial networks. |
| Operational Control Circuit | Programmable closed-loop or open-loop CT logic | Flexible, precise harmonic correction. |
| Dust and Partition Protection | Sealed dual-compartment layout | Isolates heat, blocks dust, extends life. |
| Low-Load Management Mode | Intelligent auto-standby based on load profiling | Cuts energy waste, lowers utility costs. |
Dynamic Harmonic Mitigation for High-Precision Operations
From welding lines to high-harmonic VFD motor networks, and data center server racks, our active harmonic filters delivers you real-time, instantaneous power quality correction.
Welding Machines and Industrial Induction Furnaces
Instantly neutralizing rapid, volatile current spikes, our active harmonic filters can be directly connected in parallel with heavy-duty thyristor-controlled welders and induction ovens. So, they can deliver you dynamic harmonic mitigation for high-frequency welding machines and furnaces, prevent your localized voltage drops, and protect nearby control networks from failure.
Heavy Motor Drives and Variable Frequency Converters
By canceling severe harmonic currents at the source, our active harmonic filters stop your motor insulation degradation and prevent premature bearing wear. They are perfect for large commercial HVAC chillers, compressors, and industrial VFD motor networks, delivering you integrated power quality stabilization.
Data Center Server Racks and Critical UPS Systems
Suppressing non-linear pulsing distortions, our harmonic filters work perfectly with multi-media communication grids, blade servers, and uninterruptible power supplies. Counteracting extreme neutral line overloads, they also keep your sensitive digital logic systems running safely, and ensure you zero-distortion power security.
Relying on fixed paths, the passive harmonic filter only targets specific frequencies (e.g., 5th/7th) and risks dangerous network resonance.
However, tracking your entire grid in real time, the active harmonic filters dynamically inject counter-phase current to eliminate dynamic distortion, including all orders from the 2nd to the 50th.
Designed with advanced internal DSPs, our active harmonic filters monitor your grid imbalances in real time. So they can instantly redirect the internal current to perfect phase balance.
To ensure your precise current injection, we also require the external current transformers for strict standards compliance. Delivering metering accuracy, the filter ensures you class 0.5 or better and standard 5A output, exceeding absolute maximum peak load current.
Delivering you over 95% filtering efficiency, our active filters suppress total current distortion (THDi) to under 5%. Guaranteeing you effortless IEEE 519-compliant filters also shields your enterprise from costly grid fines.
Non-Stop Protection
With a non-overloadable design, even if your plant harmonics exceed the filter’s rating, the filter never trips or disconnects. Safely running at 100% capacity, the active filters maximize protection without damage.
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