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Active Harmonic Filter

Theactive power filteris connected to the power grid in parallel, and the voltage and current of the compensation object are detected in real time. After calculation by the command current operation unit, the IGBT module is driven by the broadband pulse modulation signal conversion technology.
Input the current with the opposite phase and the same magnitude as the harmonic current of the power grid, and the two harmonic currents just cancel each other, so as to achieve the functions of filtering harmonics, dynamically compensating reactive power, and obtaining the desired power supply current.
Availability:
  • XPQ
  • XiCHi

Features of active power filter

  • Compensation function

    It can realize any combination of harmonic control, reactive power compensation, and three-phase unbalanced current adjustment, and can set the priority of each function according to the load environment and demand to realize the compensation of typical power quality problems.

  • Wide filtering range and fast response

    2 ~ 50 harmonics can be compensated at the same time, or a specific harmonic can be selected for compensation, and the total current distortion rate after compensation is less than 5%.

    Using full digital control, the harmonic current detection algorithm is based on the TTA algorithm of time domain transformation, which quickly separates the instantaneous value of each harmonic current, greatly improves the compensation response time, and truly achieves a full response of 10ms.

  • Core components

  1. IGBT module imported from Germany, three-level topology.

  2. American TIDSP control chip and A LTERA's CYCLONE III series FPGA chip constitute a powerful three-core control system.

  3. American TI's double-ended high-speed input 12-bit A/D data conversion chip makes signal sampling more reliable.

  • Layered heat dissipation structure design

    The structure design of layered heat dissipation makes the air duct independent, the heat dissipation performance is better, and the interference of dust and other pollutants on the control system is effectively isolated.

  • Fan independent disassembly design

    The fan can be disassembled independently, and the replacement is easy and convenient, which enhances the reliability of heat dissipation.

  • Modular Design

    A variety of capacity modules can be installed in any combination to improve the reliability and maintainability of the whole machine.

  • Humanized interface design

    Using a high-resolution 5-inch LCD touch screen, it can monitor various operating data of the product in real time, and change the control parameters online. The operation is simple, and it can be remotely controlled through the mobile APP. The display interface design is novel and beautiful.


Product series

XPQ

Voltage class (kV)

0.4

Single unit’s filter capability(A)

30

50

75

100

150

Phase/wire

Three-phase four-wire system

Working frequency

50 (1±2%) Hz

Number of filtering harmonic wave

2 ~ 50 times (All or selected harmonic frequencies can be eliminated)

Neutral line filtering capability

Three times of phase wire RMS current

Filtering capability

≧97%

CT demand

Three current transformers with precision above 0.5 grade and secondary current 5A

Compensation method

Harmonic, reactive or simultaneous compensation

Instantaneous response time

40us

Full response time

10ms

IGBT switch frequency

20kHz

Module extension capability

Up to 10 functional modules can be extended

Protection function

Overcurrent,overvoltage,undervoltage,overheat,overvoltage,undervoltage, short circuit, fan fault, power fault and current-limiting protection, etc

Interface display information

1、Voltage current, power factor, THD and other parameters of each phase

2、Grid, load current waveform, three-phase voltage waveform

3、Three-phase IGBT temperature display

4、Operation mode setting, parameter setting

Overload protection

Set current limiting capability with parameters

Communication

RS485&RS232

Cooling method

Air cooling  

Protection class

IP 20, higher protection class can be customized

Color

Matte black, other colors are available upon request

Installation conditions

Temperature: -10°c ~+45°C Humidity: max 95% RH (no condensation)

Altidude

It is recommended that the altitude of installation should not exceed 1000 meters, and it can be derated for use at higher altitude.

Size

Entire cabinet: 800*800*2200 (W*L*H)

Range of application

It is suitable for the grid system with neutral lines. It can filter the phase line and neutral line harmonics at the same time and compensate the reactive power.


Model Description

Dimension-Drawer

Drawer type Dimension

XPQ-EA-4L-口

Dimension (mm)

W

H

D

w

h

d

Set screw

Net weightkg

30A

484

200

640

465

158

610

M6

34

50A

75A

100A

150A

544

250

646

525

180

610

M6

47

Dimension-Wallmounted

Wall-mounted type dimension

XPQ-EA-4L-口

Dimension (mm)

W

H

D

w

h

d

Set screw

Net weightkg

30A

440

657

212

375

633

/

M8

35

50A

75A

100A

150A

500

262

/

48


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