hina Active Harmonic Filter Manufacturer, Supplier, Factory

We always believe that one's character decides products' quality, the details decides products' quality ,with the REALISTIC,EFFICIENT AND INNOVATIVE team spirit for Active Harmonic Filter, Passive Harmonic Filter, We are generally looking ahead to forming effective business associations with new clientele around the world.
Active Harmonic Filter, All of our solutions comply with international quality standards and are greatly appreciated in a variety of markets around the world. If you are interested in any of our products or would like to discuss a custom order, be sure to feel free to contact us. We've been looking forward to forming successful business relationships with new clients in the near future.

Hot Products

Tubular Resistor Cabinet
Dufew Electric Tubular Resistor Cabinet is a customized high-power resistor solution designed for harsh industrial environments. Featuring sealed stainless steel tubular resistor elements with magnesium oxide insulation, it provides reliable heat transfer, mechanical durability, and stable operation. Supporting 20KW-500KW power ratings and up to 3000V voltage, it is suitable for ports, mining equipment, chemical plants, and energy testing applications.
Variable Frequency Drive Filter
Dufew Electric Variable Frequency Drive Filter integrates input-side EMI filtering and output-side motor filtering for VFD and servo drive systems. It helps reduce conducted interference on the power side and high-frequency switching effects on the motor side, including dv/dt and reflected-wave effects. Filter ratings can be selected according to drive voltage, current, motor power, cable length, and installation conditions.
Inverter Corrugated Resistor
DUFEW CRR Series Inverter Corrugated Resistors provide reliable energy dissipation for VFD braking systems by converting regenerative energy generated during motor deceleration into heat. Featuring efficient thermal management, strong overload capability, and flexible power and resistance configurations, they can be customized for different industrial drive applications.
Load Resistor Box
Dufew Load Resistor Box is a professional resistive load testing device designed to simulate electrical loads for UPS systems, generators, inverters, power supplies, and energy storage equipment. By combining multiple resistor units with independent load circuits, it enables flexible load adjustment for no-load, partial-load, full-load, and overload testing. With power ratings up to 30KW, resistance values from 0.01Ω to 1KΩ, and customizable configurations, it provides reliable solutions for factory testing, aging tests, and laboratory verification.
Non-Inductive Aluminum Clad Resistor
DUFEW Non-Inductive Aluminum Clad Resistor is a high-performance low inductance power resistor featuring Ayrton-Perry bifilar winding technology, designed to reduce switching interference and improve circuit stability for global power electronics manufacturers, inverter suppliers, and industrial equipment integrators.
Harmonic Filter
Dufew Electric Harmonic Filter is a customized power quality solution designed for VFD systems and nonlinear industrial loads affected by harmonic distortion. Installed at the VFD input side, it uses a tuned LC resonant circuit consisting of reactors, capacitors, and damping resistors to reduce characteristic harmonic currents such as the 5th, 7th, 11th, and 13th orders. As a professional harmonic mitigation solution provider, Dufew helps industrial customers improve power quality, reduce electrical stress, and maintain stable operation of power conversion systems.

Related Blog
Reviews

Why Reactors Matter in Power Electronics and Power Conversion?
A reactor—or inductive component—serves as the energy storage element in power electronics, essential for filtering, smoothing, and impedance matching.
Electronic Filters: Principles, Types, and Applications in Signal Processing
Filters are the selective gates of electronic systems, passing desired frequencies while rejecting others.
How Can a Braking Chopper Improve Dynamic Braking Performance in Modern VFD Systems
Dufew provides the Braking Chopper as an external dynamic braking solution for variable frequency drives (VFDs), helping control DC bus voltage when motors operate as generators during rapid deceleration or overhauling loads. Designed for 220V, 380V, and 690V drive systems, the CBU Series can be configured according to braking power, duty cycle, DC bus voltage, resistor specifications, and installation requirements.
How Resistor Selection Affects Electronic Circuit Performance?
The resistor is the most fundamental passive component in electronics, yet its role is often misunderstood.
How Can a Braking Chopper Improve Motor Control and Protect VFD Systems
A braking chopper is an essential component in dynamic braking systems for variable frequency drives (VFDs), helping manage regenerative energy during motor deceleration and overhauling operation. Dufew Electric provides CBU Series braking choppers designed for compatible 220V, 380V, and 690V drive systems.

hina Active Harmonic Filter Manufacturer, Supplier, Factory

Related Products

Hot Products

Tubular Resistor Cabinet

Variable Frequency Drive Filter

Inverter Corrugated Resistor

Load Resistor Box

Non-Inductive Aluminum Clad Resistor

Harmonic Filter

Why Reactors Matter in Power Electronics and Power Conversion?

Electronic Filters: Principles, Types, and Applications in Signal Processing

How Can a Braking Chopper Improve Dynamic Braking Performance in Modern VFD Systems

How Resistor Selection Affects Electronic Circuit Performance?

How Can a Braking Chopper Improve Motor Control and Protect VFD Systems

Ray 2026-05-28 01:42:40

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