Product function

● Reduce current distortion THDi <5% 

● Harmonic compensation frequency: 2 ~ 50 times optional 

● It can compensate 15 different harmonics at the same time. 

Technical parameters

Technical parameters

Working principle of HKK-AHF

The active harmonic fitler monitors the load current real-time through the external current transformer CT, and extracts the harmonic component of the load current through the internal DSP computing, then sends it through the PWM signal to the internal IGBT, the inverter produces a current equal to the load harmonic and opposite to the harmonic direction and injects the current into the grid to compensate the harmonic current realizing the function of harmonic control. 

The superposition of each harmonic current and the base wave current shows non-sinusoidal waveform. 

To achieve the perfect power quality system

Comprehensive protection function improves the use stability by users

Design for easy integration into the system

Good man-machine interaction experience 

Product graphic characteristics

1. HKK-AHF series rack products

● Module capacity: 35 A/ 50 A/ 75 A/100 A/ 150 A 

2. HKK-AHF series wall-mounted products

● Voltage coverage: 380 V 

● Module capacity: 35 A/ 50 A/ 75 A/ 100 A/ 150 A

Display of details 

● High frequency inductance 

● IGBT (Insulated Gate Bipolar Transistor) 

● DSP (Digital Signal Processor) 

● Approximate wire-free design-copper bar 

● Independent air duct 

● Single module is equipped with 4.3-cun LCD touch color screen 

● The whole cabinet adopts 7-cun full color touch screen 

Structure and dimension

1. Dimension of HKK-AHF rack product

21. Dimension of HKK-AHF wall-mounted product 

Typical application of HKK-AHF/ 3L series active harmonic fitler in six-pulse rectifier

Six-pulse rectifier is the most widely used non-linear load in industrial system, and its harmonic generation is mainly septuplicate harmonics, nonuplicate harmonics,

11th and 13th harmonics. The comparison of the harmonic content on the power supply side before and after the input of the HKK-AHF/3L active harmonic fitler shows

that it has strong filtering ability. 

Typical application of HKK-AHF/ 4L series active harmonic fitler in commercial architecture 

Non-linear devices such as fluorescent lamps, computers, UPS, elevators and inverter air conditioner, which are widely used in commercial buildings, not only pollute

the power grid seriously, but also superpose the triple harmonics to the neutral line, which makes the neutral line heat up and threatens the safety of distribution

transformer system seriously. For commercial mixed load, our company introduces HKK-AHF/4L series active harmonic fitler. 

HKK-AHF ensures the safe, stable and reliable operation of commercial building system with its excellent neutral-line harmonic control.