Your Leading Active Power Filter Manufacturer in China
If you are looking for highly reliable and adaptable harmonic suppression equipment, Shanghai NengDu is your preferred partner. We have a team of senior power electronics engineers and a professional R&D and design center that can tailor active power filter solutions based on your grid parameters, load types, and iron core harmonic mitigation requirements.
An active power filter (APF) can eliminate harmonic oscillations and reduce costs. Active power filter (APF), as a multifunctional solution, can be easily customized to provide power factor improvement, voltage change control, flicker mitigation, and load balancing functions, greatly improving the power quality in the network while reducing harmonic pollution.
More Nengdu Active Power Filters

A universal harmonic suppression device that covers the entire range of low and medium current scenarios and supports multi module parallel expansion.

Excellent heat dissipation performance and high protection level.

Easy to install, high space utilization, supports multi module stacking networking.

Advantages of Our Active Power Filter

Effectively eliminates various harmonics with high accuracy.

Real-time detection and fast reaction to load changes.

Simultaneously compensates harmonics, reactive power and three-phase unbalance.

No resonance risk with the power system.

Small footprint, suitable for limited space.

Automatic adjustment under varying load conditions.

Reduces power loss and extends the service life of electrical equipment.

Supports parallel modules for easy capacity expansion, no system restructuring needed, ideal for long-term scalability.
Modular Design of Active Power Filter
The active power filter has a professional modular design. It typically consists of one or several APF modules and an optional LCD touchscreen. Each Active power filter module is an independent harmonic-filtering system, and the rating of the harmonic-filtering system can be changed by adding or removing Active power filter modules.

Advanced equipment, strict QC, professional team. Factory visit welcome.
Industry-trade integrated new energy supplier, specializing in NengDu Active Power Filter R&D & production.
Yes, custom logo, packaging & functions supported.
Paid samples, client covers sample & shipping cost; fee deductible from bulk orders.
Standard 7-15 days, subject to order quantity.
100% pre-shipment inspection, 12-month warranty.



