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Modular AHF

Solutions:

36A, 75A, 100A, 150A, 210A

Compensation:

50 Hz, 60 Hz

Types:

3Phase 4Wire

Voltage:

415V

Modular Active Harmonic Filter

Description

Modular Active Harmonic Filter (AHF) is an advanced, electronics-based system designed to eliminate harmful harmonics from electrical networks. Unlike passive filters, Modular AHF dynamically detects and cancels harmonic currents in real time, improving power quality and protecting sensitive equipment.

Built on Inphase’s , Modular AHF supports expansion up to 32 units, offers real-time harmonic mitigation up to the 50th order, and includes reactive power compensation and load balancing. Whether the load requires 30A, 100A, or 210A, the Modular AHF adapts instantly, ensuring consistent and efficient performance. It is ideal for industries like steel, automotive, textiles, data centers, and more where non-linear loads generate harmonics and cause equipment inefficiencies or failures.

01

3-Level IGBT

Advanced 3-level inverter technology ensures lower switching losses and superior waveform quality.

02

Extremely Efficient – 98%

High-efficiency design delivers up to 98% performance, reducing energy loss and operating cost.

03

Comprehensive Load Balancing Capabilities

Actively balances loads across phases for improved stability and optimized system performance.

04

Flexible Operation Mode

Offers multiple modes of operation for seamless adaptation to diverse electrical conditions.

05

Smart Integration

Designed for smooth communication and compatibility with modern power management systems.

06

Real-time adaptive filtering technology

Automatically adjusts filtering parameters in real time to maintain consistent performance under varying loads.

07

Robust Construction for Harsh Environments

Engineered with industrial-grade materials to ensure durability and reliable operation in tough conditions.

Steel

Textile

Cement

Railway

Data Centre

Chemical

Textile

Oil and Gas

Cement and Steel

Process Industry

Green Hydrogen Plant

Metro

Desalination Plants

Data Centers

Industries

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What is a Modular Active Harmonic Filter?

A Modular Active Harmonic Filter (AHF) is an advanced power quality solution designed to eliminate harmonic distortion in electrical systems caused by non-linear loads such as Variable Frequency Drives (VFDs), UPS systems, rectifiers, welding machines, and switched-mode power supplies. Unlike conventional passive filters, a Modular Active Harmonic Filter continuously monitors the electrical network and injects equal and opposite compensation currents to cancel unwanted harmonics in real time. The modular architecture allows multiple units to operate in parallel, making it easy to expand capacity as power demand increases. This scalable design ensures long-term flexibility while maintaining excellent harmonic mitigation performance. Modular Active Harmonic Filters help industries improve power quality, reduce Total Harmonic Distortion (THD), and comply with IEEE 519 harmonic standards.

Benefits of Modular Active Harmonic Filter Technology

Modular Active Harmonic Filter technology offers several advantages for industrial and commercial facilities seeking reliable power quality improvement.
  • Real-time harmonic compensation for dynamic load conditions
  • Significant reduction in Total Harmonic Distortion (THD)
  • Improved power factor and reduced utility penalties
  • Enhanced reliability of transformers, motors, and switchgear
  • Lower energy losses and improved system efficiency
  • Modular and scalable design for future expansion
  • Reduced maintenance costs and equipment downtime
  • Compliance with IEEE 519 harmonic standards
  • Compact footprint and easy installation
  • Simultaneous harmonic filtering and reactive power compensation
By reducing harmonic distortion and improving overall power quality, Modular Active Harmonic Filters help industries maximize productivity while protecting critical electrical assets.

How Modular Active Harmonic Filters Reduce THD

Modular Active Harmonic Filters reduce Total Harmonic Distortion (THD) by continuously monitoring load currents and identifying harmonic components present in the electrical system. Using advanced digital signal processors (DSPs) and power electronics technology, the filter generates compensation currents that are equal in magnitude and opposite in phase to the detected harmonic currents.
These compensation currents effectively cancel harmonics before they can circulate through the electrical network. As a result, current distortion levels can typically be reduced from 20–35% THD to below 5%, helping facilities meet IEEE 519 compliance requirements. The dynamic response of Modular Active Harmonic Filters ensures effective harmonic mitigation even when load conditions change rapidly, making them ideal for modern industrial applications with fluctuating electrical demands. Modular Active Harmonic Filters are widely used across industries where harmonic distortion and poor power quality can affect operational efficiency and equipment reliability.

Applications of Modular Active Harmonic Filters

These industries rely on Modular Active Harmonic Filters to reduce harmonic distortion, improve power factor, protect equipment, and ensure uninterrupted operations. InPhase Power Technologies Pvt Ltd is a leading manufacturer of Modular Active Harmonic Filters in India, providing advanced power quality solutions for industries across multiple sectors. Our Modular AHF systems are designed using state-of-the-art digital control technology and intelligent harmonic compensation algorithms to deliver superior performance and long-term reliability.

Why Choose InPhase Modular Active Harmonic Filters?

With InPhase Modular Active Harmonic Filters, industries can achieve cleaner power, improved energy efficiency, reduced maintenance costs, and enhanced equipment lifespan while ensuring reliable electrical system performance.

IEEE Standard for Harmonic Control in Electric Power Systems

This standard establishes goals for the design of electrical systems that include both linear and nonlinear loads. The interface between sources and loads is described as the point of common coupling (PCC). The voltage and current distortion steady-state limits in this standard apply at the user PCC to facilities containing harmonic-producing loads (nonlinear equipment). Reference: IEEE 519-2022 Standard for Harmonic Control in Electric Power Systems

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