Active Harmonic Filter

Engineered For THD Reduction

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Advanced Harmonic Mitigation Solutions for Modern Industries

Shadow Energy as a global Active Harmonic Filter Manufacturer, we engineer high-performance, industrial-grade active harmonic filters designed for THD reduction, IEEE 519 compliance, and Real-Time Harmonic Mitigation. Our solutions deliver unmatched power quality improvement for facilities dealing with non-linear loads, VFD harmonics, transformer heating issues, and voltage distortion challenges.

Whether your goal is to improve grid stability, reduce energy losses, or safeguard electrical assets, our AHF systems are built for precision, long-term reliability, and world-class performance.

What Is an Active Harmonic Filter?

An Active Harmonic Filter (AHF) is an advanced Power Quality Improvement device that continuously monitors electrical parameters and injects compensating currents to cancel unwanted harmonics in real time.

Harmonics are distortions caused by VFDs, UPS systems, HVAC drives, computer loads, and non-linear equipment.
These distortions increase THD, overheat transformers, waste energy, and reduce equipment lifespan.
An AHF eliminates these harmonics instantly using IGBT-Based inverters and DSP controllers.

How Active Harmonic Filters Work?

The system performs real-time harmonic analysis.
It identifies harmful harmonic currents.
It generates equal and opposite compensating currents.
Harmonics are cancelled dynamically within milliseconds.

This ensures clean power, optimized performance, and superior equipment protection.

Why Choose an Harmonic Filter for Your Facility?

Key Benefits

Lower THD to meet strict IEEE 519 compliance
Protect sensitive equipment from harmonic distortion
Prevent transformer overheating and reduce copper losses
Eliminate voltage distortion and nuisance tripping
Improve power factor with integrated reactive power compensation
Enhance energy efficiency in plants
Stabilize electrical networks with dynamic load balancing
Increase equipment lifespan by reducing stress on components

3-Phase Active Harmonic Filters

Designed for heavy industrial loads
Up to 100A–1200A compensation range
Ideal for VFDs, motors, and large nonlinear systems
Supports 3-phase harmonic mitigation and load balancing

Wall-Mounted Active Harmonic Filters

Compact and lightweight
Perfect for commercial buildings, IT rooms, and small facilities
Up to 100A compensation capacity
Easy installation and low maintenance

Ideal for MCC panels and OEM integrations
Supports both 415V and 690V systems
Highly flexible for retrofit and new installations

Panel-Mounted Active Harmonic Filters

Our AHF Solutions

Modular / Scalable Active Harmonic Filters

Modular architecture for scalable compensation
Hot-swappable modules
Perfect for data centers and fast-growing facilities

Custom-Engineered Harmonic Filter Panels

Built according to customer SLD requirements
Includes cabinet design, busbar sizing, and cooling optimization
Designed for harsh industrial environments

Manufacturing
HVAC systems
Commercial complexes
Automation systems
Solar inverter integration

Tailored solutions for:

Applications-

Our harmonic filters are used across sectors such as:

Data centers
Manufacturing plants
Industrial automation
IT & server rooms
HVAC systems
VFD-driven equipment
Solar inverter systems
UPS-based facilities
Commercial buildings
Oil & gas installations

Technical Features-

Real-time harmonic analysis with DSP control
Dynamic compensation across multiple harmonic orders
Multi-harmonic cancellation (up to 50th order)
Reactive power compensation for PF improvement
Load balancing for unbalanced systems
IGBT-based PWM control
Touch-screen HMI for easy monitoring
MODBUS / BMS / SCADA integration for Industry 4.0
Automatic derating & protection features

Quality & Certification-

We follow strict global standards:

ISO 9001, ISO 45001
IEEE 519 compliance
Thermal test, load test & dielectric test
100% individual unit testing
Long-duration burn-in test
Component-level QC for reliability

Why Choose Us?

As a top active harmonic filter manufacturer, we offer superior engineering, global-quality manufacturing, and proven field performance.

What Makes Us Different

In-house R&D center with advanced harmonic simulation tools
Industrial-grade active harmonic filters built for harsh conditions
ISO-certified manufacturing facility
100% component-level testing before assembly
IEEE 519 compliant designs
MODBUS, BMS, SCADA integration
Real-world application experience across all industrial sectors
Custom-built harmonic filters tailored for unique loads
20+ years of power quality engineering expertise
Global supply capability
Industrial-grade build quality
Real-time harmonic monitoring tools
Proven IEEE 519 performance
Fast technical support
Custom engineering capability
Best price-to-performance ratio
End-to-end lifecycle support

We are the Certified AHF manufacturer trusted by leading industries worldwide. Our expertise makes us the Best Active Harmonic Filter Manufacturer for industries seeking reliability and long-term performance.

(FAQ) Frequently Asked Questions

1. What is an active harmonic filter?

A digital power electronic device that eliminates harmonic currents in real time using IGBT-based compensation.

2. How do active harmonic filters work?

They detect and inject compensating currents to cancel undesirable harmonics instantly.

3. Why are harmonic filters important in industries?

They reduce THD, prevent heating, protect equipment, and improve system reliability.

4. What THD levels can your AHF achieve?

Typically <5% as per IEEE 519 guidelines.

5. What are the typical applications?

VFDs, UPS systems, HVAC plants, data centers, and all nonlinear loads.

6. Do you offer custom-built harmonic filters?

Yes, we design and manufacture fully customized solutions.

7. Can AHFs improve power factor?

Yes—our AHF provides reactive power compensation and PF correction.

8. What is the difference between passive and active filters?

Active filters offer dynamic compensation, wider bandwidth, and superior THD control.

9. What is the lifespan of your active harmonic filters?

10–15 years with proper maintenance.

10. Do you provide installation support?

Yes—remote & on-site support are available for all projects.