Wanlida Active Filter/50A~600A

Wanlida active filter can dynamically filter harmonic with variable amplitude and frequency and compensate reactive power.

Wanlida Active Filter

1.     Topology structure

The main topology structure is three-phase H-bridge star connection, modularized power components are easy to maintenance and replace.Power modules adopt force air cooling, fans are made in Germany.The control system adopts Spartan3adsp FPGA of Xilinx.

  

   

2. Technical Parameters

WLD-APF		3Wires	4Wires
Rated compensation current		100A~600A	50A~600A
Input	Working voltage (V)	400V (-20%~+15%)	400V (-20%~+15%)
		690V (-20%~+15%)
	Working frequency (Hz)	50/60	50/60
Performance Index	Filtering ability	THDI<3% (Rated Power)	THDI<3% (Rated Power)
	Filtering range	2nd ~50th	2nd ~50th
	Single harmonic compensation rate adjustment	Can set compensation current for each harmonic	Can set compensation current for each harmonic
	Instantaneous response time	<100µs	<100µs
	Fully response time	<10ms	<10ms
	Active power loss	<3% (Rated Power)	<3% (Rated Power)
	Three-phase unbalance correction	Yes	Yes
	Reactive power compensation	Yes, can set power factor	Yes, can set power factor
	Overload protection	Current limit automatically at 100% rated output	Current limit automatically at 100% rated output
	Switching frequency	20KHz	20KHz
Display and Operation	Display Interface	5.7inch colorful touch screen	5.7inch colorful touch screen
	Display State	Current, voltage etc power grid parameters	Current, voltage etc power grid parameters
	Communications	Modbus, RS485, TCP/IP Ethnet	Modbus, RS485, TCP/IP Ethnet
	I/O dry contactor	5 output contactors, 4 input contactors (user-defined)	5 output contactors, 4 input contactors (user-defined)
Environment Temperature	Environment temperature	-10°C~+40°C.	-10°C~+40°C.
	Storage temperature	-40°C~+65°C.	-40°C~+65°C.
	Humidity	<95%, no condensation	<95%, no condensation
	Altitude	Below 1000m	Below 1000m

3. Key components

3.1     Traction level IGBT module

Adopt international high-quality IGBT module.The fourth generation IGBT technology.Switching loss and conduction loss reduced dramatically.Temperature period and power period enhanced dramatically, the lifetime prolongs.Redundancy design of module ensures APF reliable and safety. 

3.2     Power Unit

 It is the core circuits of APF, used for power conversion. Modularized design, all power units have same structure and electrical performances, they can be interchangeable.

4.  Fully digital control system

Adopting Spartan3adsp FPGA chip of Xilinx.Calculate harmonic and reactive power in real time, and then realize dynamic track and compensation.The control system adopts modularized design.

5. AHF Functions

Reduce harmonic distortionImprove power factorReduce line lossPrevent neutral line from overheatPrevent power equipments from noise, overheat and vibration like motor, transformer etc.Prevent signal transmission equipments from data loss and interferencePrevent measurement error caused by non-sinusoidal current and voltage.Prevent sensitive semi-conductive device from damagePrevent circuit breaker trip.Prevent capacitors from burn due to harmonic resonanceEnsure safety of power system and reduce energy consumption

6. AHF Technical Features

Can filter all kinds of harmonic currentsFiltering capability >95% for aimed harmonicTraction level IGBT module, 20KHz switching frequency     Response time <10msSingle capacity up to 300ASuppress three-phase unbalanceConform to IEEE Std. 519-1992, GB/T 14549Can be used as harmonic sourceApply closed-loop control, and ensure filtering accuracy Can set filtering mode and select harmonic filtering typeAdapt automatically to impedance change of power network Can connect 690V system(CE/C-tick) and 600V system(cUL) directlyParallel connection, easy for filtering capacity expansionModularized design, easy for maintenancePerfect protection functionsFaults record and history inquireSupport multiple communication protocols

7.  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.

Wanlida Active Filter/50A~600A