Active Harmonic Filters(AHF-15-0.4-4L-R)

Short Description:

Active harmonic filters reduce or eliminate harmonic distortions in the electrical system, ensuring that power quality meets industry standards and improves the overall efficiency and reliability of the power system.

Suitable for industrial manufacturing facilities, commercial buildings, renewable energy systems, healthcare facilities, data centres

A 15A low power active harmonic filter is designed to mitigate harmonic distortions in electrical systems and improve power quality. These filters are commonly used in industrial and commercial settings to reduce harmonic currents generated by non-linear loads such as variable frequency drives (VFDs), power supplies, and other electronic equipment.

- 2nd to 50th harmonic mitigation

- Real-time compensation

- Modular design

- Protect equipement from being over heated or failure

- Improve working efficiency of equipment

Rated compensation current：15A

Nominal voltage：AC400V(-40%~+15%)

Network： 3 phase 3 wire/3 phase 4 wire

Installation：Rack-mounted

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Product Detail

FAQ

Product Tags

Petrification

Harmonic source: thyristor, inverter

Harmonic equipment: speed fan, all kinds of pumps

Data center industry

Harmonic source: UPS, rectifier

Harmonic equipment: UPS, air conditioning, elevator, LED lights

Automobile manufacturing

Harmonic source: inverter, rectifier

Harmonic equipment: welding machine, conveying system

Garbage power generation

Harmonic source: rectifier, inverter

Harmonic equipment: all kinds of pumps

Sewage treatment

Harmonic source: inverter, rectifier

Harmonic equipment: fan, pump

Car charging pile

Harmonic source: rectifier

Harmonic device: charger

Semiconductor

Harmonic source: thyristor, single crystal furnace

Harmonic equipment: quartz crucible, thyristor

Hospital

Harmonic source: rectifier, UPS, inverter

Harmonic equipment: precision equipment, LED lights, elevators, UPS

Paper industry

Harmonic source: halogen lamp, inverter

Harmonic equipment: pulper, paper cutting, overpress, arc lamp

Iron and steel smelting

Harmonic source: rectifier, inverter, thyristor

Harmonic equipment: blast furnace,intermediate frequency furnace

Drilling platform

Harmonic source: rectifier, inverter

Harmonic equipment: AC generator set, pump

Modern architecture

Harmonic source: rectifier, inverter

Harmonic equipment: switching power supply, air conditioning, elevator, LED

Typical Application Field

ProfessionTransformer capacity	Central compensation capacity selection query table
ProfessionTransformer capacity	Subways, tunnels, high-speed trains, airports	Telecommunications, commercial construction, metallurgy, banking	Medical industry	Automobile manufacturing, ship manufacturing	Chemical, petroleum	Metallurgical industry
Frequency variation of harmonic current	15%	20%	25%	30%	35%	40%
200 kVA	50A	50A	100A	100A	100A	100A
250 kVA	50A	100A	100A	100A	150A	150A
315 kVA	100A	100A	150A	150A	150A	200A
400 kVA	100A	150A	150A	200A	200A	250A
500 kVA	100A	150A	200A	200A	250A	300A
630 kVA	150A	200A	250A	300A	350A	400A
800 kVA	200A	250A	300A	350A	450A	500A
1000 kVA	200A	300A	400A	450A	550A	600A
1250 kVA	300A	350A	450A	550A	650A	750A
1600 kVA	350A	500A	600A	700A	850A	950A
2000 kVA	450A	600A	750A	900A	1050A	1200A
2500 kVA	550A	750A	900A	1150A	1300A	1500A
*Note: The AHF capacity in the above table is obtained at a transformer load factor of 80 per cent. In actual projects, the AHF capacity is obtained proportionally by comparing the value of the load factor with the 80 % cent load factor in this table.
* This table is for selection reference only

Working Principle

External CT detects the load current, DSP as CPU has advanced logic control arithmetic, could quickly track the instruction current, divides the load current into active power and reactive power by using the intelligent FFT, and calculates the harmonic content rapidly and accurately. Then it sends PWM signal to internal IGBT's driver board to control IGBT on and off at 20KHZ frequency. Finally generates opposite phase compensation current on inverter induction, at the same time CT also detects the output current and negative feedback goes to DSP. Then DSP proceeds the next logical control to achieve more accurate and stable system.

Technical Specifications

TYPE	220V Series	400V Series	500V Series	690V Series
Rated compensation current	23A	15A、25A、50A 75A、100A、150A	100A	100A
Nominal voltage	AC220V (-20%~+15%)	AC400V (-40%~+15%)	AC500V (-20%~+15%)	AC690V (-20%~+15%)
Rated frequency	50/60Hz±5%
Network	Single phase	3 phase 3 wire/3 phase 4 wire
Response time	<40ms
Harmonics filtering	2nd to 50th Harmonics,The number of compensation can be selected,and the range of single compensation can be adjusted
Harmonic compensation rate	>92%
Neutral line filtering capability	/	The filtering capacity of 3 phase 4 wire neutral line is 3 times of that of phase fiitering
Machine efficiency	>97%
Switching frequency	32kHz	16kHz	12.8kHz	12.8kHz
Function	Deal with harmonics
Numbers in parallel	No limitation.A single centralized monitoring module can be equipped with up to 8 power modules
Communication methods	Two-channel RS485 communication interface (support GPRS/WIFI wireless communication)
Alfitude without derating	<2000m
Temperature	-20~+50℃
Humidity	<90%RH,The average monthly minimum temperature is 25°C without condensation on the surface
Pollution level	Below level III
Protection function	Overload protection,hardware over-current protection,over-voltage protection,power failure protection,over-temperature protection,frequency anomaly protection,short circuit protection,etc
Noise	<50dB	<60dB	<65dB
nstallation	Rack/Wall-mounted
Into the way of line	Back entry(rack type),top entry(wall-mounted type)
Protection grade	IP20