Active Harmonic Filter (AHF)—Three Phase

Short Description:

Harmonic Control, Reactive Power Compensation, Three-Phase Unblance Control

Product Detail

Product Tags

Product Summary:

Active harmonic filters (AHF) are the ultimate answer to power quality problems caused by waveform distortions, low power factor, voltage variations, voltage fluctuations and load unbalance for a wide range of segments and applications. They are a high performance, compact, flexible, modular and cost-effective type of active power filters (APF) which provide an instantaneous and effective response to power quality problems in low or high voltage electric power systems. They enable longer equipment lifetime, higher process reliability,improved power system capacity and stability, and reduced energy losses, complying with most demanding power quality standards and grid codes.

AHFs eliminate waveform distortions from the loads like harmonics, inter harmonics and notching,and harmonic voltages caused by harmonic currents, by injecting in real-time the distorted current of same magnitude but opposite in phase in the electric power system. In addition, AHFs can take care of several other power quality problems by combining different functions in a single device.

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.

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Technical Specifications:

TYPE Series 400V Series 500V Series 690V
Max neutral wire current 15A、25A、50A、
100A 100A
Nominal voltage AC380V(-20%~+20%) AC500V(-20%~+20%) AC690V(-20%~+20%)
Rated frequency 50Hz±5%
Network Three-phase three-wire/three-phase four-wire
Response time <40ms
Harmonics filtering 2th 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 three-phase four-wire neutral line is 3 times of that of phase filtering
machine efficiency >97%
Switching frequency 16kHz 12.8kHz 12.8kHz
Feature selection Deal with harmonics/Deal with harmonics and reactive power/
Deal with harmonics and three-phase unbalance /Three options
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)
Altitude without derating <2000m
Temperature -20~+50°C
Humidity <90% RH,The average monthly minimum temperature is 25℃ 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 <60dB <65dB
Installation Rack/wall hanging Rack
Into the way of line Back entry (rack type), top entry (wall-mounted) Top entry
Protection grade IP20

Product Appearance:

Rack-Mounted Type:

Model Compensation
capacity  (A)
System voltage(V) Size(D1*W1*H1)(mm) Cooling mode
YIY AHF-50-0.4-4L-R(Compact) 50 400 515*510*89 Forced air cooling
YIY AHF-75-0.4-4L-R 75 400 546*550*190 Forced air cooling
YIY AHF-100-0.4-4L-R 100 400 586*550*240 Forced air cooling
YIY AHF-150-0.4-4L-R 150 400 586*550*240 Forced air cooling
YIY AHF-100-0.5-4L-R 100 500 675*495*275 Forced air cooling
YIY AHF-100.69-4L-R 100 690 735*539*257 Forced air cooling

Wall Mountedd Type:

Model Compensation
capacity  (A)
System voltage(V) Size(D2*W2*H2)(mm) Cooling mode
YIY AHF-50-0.4-4L-W(Compact) 50 400 89*510*515 Forced air cooling
YIY AHF-75-0.4-4L-W 75 400 190*513*599 Forced air cooling
YIY AHF-100-0.4-4L-W 100 400 240*600*597 Forced air cooling
YIY AHF-150-0.4-4L-W 150 400 240*600*597 Forced air cooling
YIY AHF-100-0.5-4L-W 100 500 275*495*675 Forced air cooling
YIY AHF-100.69-4L-W 100 690 275*539*735 Forced air cooling

Floor Type:

Model Compensation
capacity  (A)
System voltage(V) Size(D3*W3*H3)(mm) Cooling mode
YIY AHF-100-0.4-4L-C 100 400 Cabinet 1/Cabinet 2 Forced air cooling
YIY AHF-150-0.4-4L-C 150 400 Cabinet 1/Cabinet 2 Forced air cooling
YIY AHF-200-0.4-4L-C 200 400 Cabinet 1/Cabinet 2 Forced air cooling
YIY AHF-250-0.4-4L-C 250 400 Cabinet 1/Cabinet 2 Forced air cooling
YIY AHF-300-0.4-4L-C 300 400 Cabinet 1/Cabinet 2 Forced air cooling
YIY AHF-400-0.4-4L-C 400 400 Cabinet 1/Cabinet 2 Forced air cooling
YIY AHF-300-0.5-4L-C 300 500 Cabinet 1 Forced air cooling
YIY AHF-300-0.69-4L-C 300 690 Cabinet 1

* Cabinet 1 size: 800*1000*2200mm, can accommodate 5 modules.

* Cabinet 2 size: 800*1000*1600mm, can accommodate 3 modules.

* The table is the standard specification, if you need other sizes, pls contact us for customization.



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