100A Active harmonic filter (AHF) reduce harmonic THDI <5%
AHF Introduction
Active harmonic filter (AHF) is a new active electronic harmonic filtering device to reduce voltage harmonic and current harmonic and improve power quality.
Based on voltage source inverter, it's connected in parallel with non-linear loads which need to be compensated.
For compensating reactive power and harmonic current which is with changing Amp and frequency, it overcomes the shortcomings of traditional passive filter. It has the advantages of high compensation accuracy and fast dynamic response etc.
Main Specification
Rated current AHF | 50A | 100A | 150A | 200A | 300A | 400A |
Rated Voltage | AC380V±15%/AC660V±15% | |||||
Electrical Wiring | 3P3W, 3P4W | |||||
Rated Working Frequency |
50/60Hz±5% | |||||
Compensation mode | 1. Compensate harmonics, specified harmonic select 2. Compensate harmonic and reactive power |
Filter Range | 2-50 harmonics(specified harmonic selectable) |
Filter level | Amplitude compensation setting for specified harmonic |
Auto Current Limitation | Yes |
Auto Diagnosis and Protection | Overheat protection, heatsink exceeds 65℃, fans will start automatically |
Voltage loss protection(system voltage lower than UN85%), breaker carries out voltage loss protection | |
Load over current protection | |
Compensation over current protection | |
System voltage protection | |
DC voltage protection | |
IGBT protection(IGBT inside temperature exceed 108℃, alarm for IGBT fault) | |
Impulse current | 2 times of IGBT rated current |
Efficiency | 97% |
Overload ability | 120% |
Multi-Unit Operation Mode |
Parallel operation |
Switching Frequency | 6k-25.6kHz |
Response Time | ≤5ms |
Controller | DSP |
Display Mode | Touch screen |
Communication Function |
Modbus RTU Protocol |
Control Connection | Fiber or electrical connection |
IP Grade | IP30 |
Cooling Method | Intelligent wind cooling |
Power consumption | <3% |
Noise | ≤65dB (A Sound level) |
Ambient temperature | -5°C ~ +40°C, and 24h average temperature is not higher than +35°C |
storage temperature | -20°C〜65°C |
Relative humidity | Installation altitude is less than 1000 meters |
AHF working principle
System Connection Diagram
AHF Type
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100A Active Harmonic Filters Compensation Device Manufacturers and Factory China