Zhuhai Wanlida Electrical Automation Co., Ltd  Company Logo Zhuhai Wanlida Electrical Automation Co., Ltd
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Wanlida Low Voltage Active Harmonic Filter

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Zhuhai Wanlida Electrical Automation Co., Ltd
[China]

Address
Wanlida Relay Protection Industrial Park, No. 1 Technology Road Zhuhai Guangdong
Phone
86-0756-3395623
Contact name
Ashley Lin

Quick Information

  • Brand Name: Wanlida
  • Place of Origin: China
  • Model Number : WLD-APF

Description

Wanlida Active harmonic filter

Technical Principle

Active harmonic filter (APF/AHF) is new power electronic equipment which can dynamically filter harmonic with variable amplitude and frequency and compensate reactive power, it overcome the shortages of conventional LC filter and obtained the better compensation performances than passive filter.

The right diagram is schematic diagram of active harmonic filter (APF/AHF), where, Vs is AC power supply, nonlinear load is harmonic source, it generates harmonic and consumes reactive power. APF system is composed of instruction current operational circuit and compensation current generation circuit, the instruction current operational circuit is mainly to detect current components in harmonic current and reactive power of compensation object, and the compensation current generation circuit generates equivalent compensation current with same amplitude and inverse polarity with harmonic current to filter harmonics according to instruction signal, the main circuit adopts PWM converter. 

  Principle.jpg

APF Topology structure.jpg

AHF Functions

  • Reduce harmonic distortion
  • Improve power factor
  • Reduce line loss
  • Prevent neutral line from overheat
  • Prevent power equipments from noise, overheat and vibration like motor, transformer etc.
  • Prevent signal transmission equipments from data loss and interference
  • Prevent measurement error caused by non-sinusoidal current and voltage.
  • Prevent sensitive semi-conductive device from damage
  • Prevent circuit breaker trip.
  • Prevent capacitors from burn due to harmonic resonance
  • Ensure safety of power system and reduce energy consumption

AHF Technical Features

  • Can filter all kinds of harmonic currents
  • Filtering capability >95% for aimed harmonic
  • Traction level IGBT module, 20KHz switching frequency    
  • Response time <10ms
  • Single capacity up to 300A
  • Suppress three-phase unbalance
  • Conform to IEEE Std. 519-1992, GB/T 14549
  • Can be used as harmonic source
  • Apply closed-loop control, and ensure filtering accuracy
  • Can set filtering mode and select harmonic filtering type
  • Adapt automatically to impedance change of power network
  • Can connect 690V system(CE/C-tick) and 600V system(cUL) directly
  • Parallel connection, easy for filtering capacity expansion
  • Modularized design, easy for maintenance
  • Perfect protection functions
  • Faults record and history inquire
  • Support multiple communication protocols

 DSP.jpg

FPGA.jpg

 

Technical Parameters

 

SN

Parameters

Value

1

Power Supply Voltage(kV)

0.4/0.69kV (±15%)

2

Power Supply Frequency (Hz)

50/60Hz

3

Power Supply Mode

Three-phase three wires or three-phase four wires

4

Harmonic Compensation Components

2~50

5

Response Time (ms)

<10ms

6

Output Current(A)

25~750A

7

Protection Mode

Over current, overheat, phase loss, Error-phase, DC busbar over/under voltage, Current limit for overload etc

8

Loss

<5%

9

Operation Display

Touch screen

10

Operation Environment

-100C~+450C

11

Altitude

<1000m

12

Relative Humidity

<90% (250C)

13

Noise

<70Db

14

Compensation capability

All within compensation capacity

15

Compensation Mode

Harmonic compensation, reactive power compensation or Both

16

Switching Frequency

20kHz

17

Cooling Mode

Forced air cooling

18

IP

IP20

19

Color

RAL7032

20

Feed Direction

Top/Bottom

21

Communication

RS485/RS232

 

Factory Acceptance Test Platform

We built the first-class high voltage and big capacity active harmonic filter test platform to realize Factory Acceptance Testing for whole machine before delivery.

Model and Dimension  

 

Model

Output current(A)

Dimension(W×D×H)mm

WLD-APF-0.4-75-3L

WLD-APF-0.4-75-4L

75

800×600×2200

WLD-APF-0.4-150-3L

WLD-APF-0.4-150-4L

150

800×800×2200

WLD-APF-0.4-225-3L

WLD-APF-0.4-225-4L

225

800×800×2200

WLD-APF-0.4-300-3L

WLD-APF-0.4-300-4L

300

1200×1000×2200

WLD-APF-0.4-375-3L

WLD-APF-0.4-375-4L

375

1600×800×2200

WLD-APF-0.4-450-3L

WLD-APF-0.4-450-4L

450

1600×800×2200

WLD-APF-0.4-525-3L

WLD-APF-0.4-525-4L

525

1600×800×2200

WLD-APF-0.4-600-3L

WLD-APF-0.4-600-4L

600

2400×1000×2200

WLD-APF-0.4-675-3L

WLD-APF-0.4-675-4L

675

2400×1000×2200

WLD-APF-0.4-750-3L

WLD-APF-0.4-750-4L

750

2400×1000×2200

 

The above dimension is our standard cabinet for 400V AHF (Active harmoni filter) and the wall-mounted cabinet or other voltage level AHF can be designed according to requirements of users. 


Price

  • Price Condition : FOB
  • Delivery Port : Shenzhen/HongKong/Macau

Packaging & Delivery

  • Packing :Wooden case (Fumigation)
  • Delivery Lead Time : 25days
  • Minimum Order : 1Set
  • Supply Ability : 1000 Set/Sets / Year

Product Image

  • Wanlida Low Voltage Active Harmonic Filter image

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