Active Harmonic Filter

The SNA-AHF series active harmonic filter is a power quality improvement product designed to dynamically filter harmonics and compensate for reactive power. It filters harmonic currents of varying orders and frequencies and compensates for dynamic reactive power in real time. It overcomes the limitations of conventional harmonic suppression and reactive power compensation methods, such as passive harmonic filters, by providing both harmonic filtering and reactive power compensation.

Sinava Power is a professional Active Harmonic Filter supplier, providing intelligent harmonic mitigation solutions to improve power quality, reduce harmonic distortion, and ensure stable electrical system performance for industrial, commercial, and utility applications.

Sinava Power's Active Harmonic Filter (AHF) is an advanced solution designed to address harmonic distortion in power systems, ensuring a stable and high-quality electrical environment. The AHF is a highly efficient and flexible tool for mitigating harmonic interference, suitable for a variety of industrial and commercial applications. This active filter continuously monitors the load current and rapidly reacts to the changes in power system distortion, injecting corrective currents to neutralize unwanted harmonics from the upstream power source.

By deploying this cutting-edge technology, Sinava Power AHF ensures improved power quality, with more balanced voltage and current waveforms, and helps to comply with strict harmonic limits. The system can handle compensation up to the 51st order of harmonics, balancing load between phases and the neutral, which results in enhanced operational efficiency.

Key Features of the Sinava Power Active Harmonic Filter

- Harmonic compensation up to the 51st order

- Load balancing across phases and neutral

- Compact design with a three-level topology

- Expandable up to 12 modules in parallel for scalable solutions

- User-friendly 4-inch, 7-inch and 10-inch human-machine interface (HMI) options

- Silent operation: ≤ 65 dB(A) for a noise-free environment

- Optional RS485/Ethernet communication for easy integration into existing systems

Application of Sinava Power Active Harmonic Filters

Sinava AHF solutions are widely deployed across sectors where power quality is critical:

- Industrial Automation (motors, inverters, variable speed drives)

- Data Centers (sensitive IT loads and UPS systems)

- Commercial Buildings (elevators, HVAC, lighting)

- Renewable Energy Systems (solar inverters, wind turbines)

- EV Charging Infrastructure (fast chargers)

- Hospitals & Airports (clean power requirements)

- Water & Wastewater Treatment Plants

Passive vs. Active Harmonic Filters

Both passive harmonic filters and active harmonic filters (AHF) are used to reduce harmonic distortion and improve power quality in electrical systems. However, they work differently and are suitable for different applications.

Passive harmonic filters use capacitors, inductors, and resistors tuned to specific harmonic frequencies. They are typically designed to eliminate fixed harmonics and are often used in stable electrical environments.

In contrast, active harmonic filters dynamically monitor harmonic currents and inject inverse compensation currents in real time. This allows them to suppress multiple harmonic orders simultaneously and adapt to changing electrical loads.

For modern utility power systems, substations, commercial buildings, and industrial facilities with fluctuating loads, active harmonic filters are generally considered the more flexible and reliable harmonic mitigation solution.

Why Choose Active Harmonic Filters?

For facilities facing changing electrical loads and strict power quality requirements, Active Harmonic Filters provide a more advanced and future-ready solution.

Key advantages of Active Harmonic Filters include:

Real-time harmonic mitigation

Better power quality improvement

Dynamic compensation for fluctuating loads

Reduced transformer and cable overheating

Improved system reliability

Compliance with IEEE 519 harmonic standards

Lower maintenance risks

Whether for utility substations, commercial buildings, renewable energy systems, or industrial power systems, an active harmonic filter offers a smarter and more efficient way to control harmonic distortion and maintain stable electrical performance.

Why Choose Sinava as Your AHF Manufacturer?

Advanced R&D Capability: Our in-house engineering team continually innovates on power electronics and digital control technologies.

Global Manufacturing Standards: ISO-certified production ensures every unit is built for performance and durability.

Custom Solutions: Modular, scalable designs tailored for your load profile and network conditions.

Smart Integration: Seamless compatibility with existing systems (SCADA, EMS, PLC).

Comprehensive Support: From design consultation and commissioning to ongoing technical assistance.

As electrical systems become more complex and non-linear loads more prevalent, power quality issues such as harmonic distortion, reactive power imbalance, and voltage fluctuations are growing concerns for industrial and commercial facilities. Sinava, a trusted Active Harmonic Filter (AHF) manufacturer, delivers intelligent, high-performance solutions designed to eliminate harmonics, correct power factor, and stabilize your power system—all in real time.

Our AHF products are engineered to meet the most demanding global standards, providing high reliability, modularity, and control precision. Contact Us today to discuss your power quality improvement needs and receive a tailored proposal.