APF mainly uses FFT algorithm, DFT algorithm and three-phase circuit instantaneous reactive power theory algorithm. There are two kinds of APF, parallel type and series type, the former is used more; Shunt active power filter mainly deals with current harmonics and series active power filter mainly deals with voltage harmonics.
Active filter compared with passive filter, good governance effect, mainly can filter out many times and high harmonics at the same time, will not cause resonance, but the price is relatively high! The practical application of safety factor is very low, the international common practice is to transformer boost, to ensure reliability, the relevant national departments also require the form of transformer boost and active filter combination, control high voltage harmonics!
| Size | 400V |
| 50A-450A | |
| Rated input line voltage | 380V(-40%~+20%) |
| Power frequency | 50/60Hz(Range45Hz~62Hz) |
| Number of Parallelable | unlimited |
| overall efficiency | ≥97% |
| Power network structure | Three phase three wire four phase four wire |
| Current transformer | 150/5~10000/5 |
| circuit topology | Three level |
| performance index | |
| harmonic compensation | support |
| reactive compensation | support |
| unbalance compensation | support |
| harmonic range | >97% |
| fast response time | <100us |
| total reponse time | <10ms |
| Target power factor | Capacitive sensibility is continuously adjustable |
| Switch frequency | 10kHz |
| Cooling Type | Intelligent air cooling |
| noise label | <65dB |
| communication interface | RS485，CAN, network interface |
| communication agreement | General electric protocol. Modbus protocol |
| Module dis la interface | LCD multi-function touch color screen |
| Protection function | Protection of overvoltage .short circuit, inverter reverse and over compensation |
| Fault Alarm | Yes |
| Environmental requirement | |
| Altitude | ≤ 1500mm,Beween 1500 and 4000m, according to GB/T3859-2, every 100m increase, the power is reduced by 1% |
| Operating temperaturel | -10℃~+40℃ |
| Relative humidity | 5%~95%，without condensation |
| Protection Grade | Other IP levels can be customized |
Chemical Industry
Dust removal fan, gas blower, Roots fan, desulfurization fan, gasCompressor (nitrogen, carbon dioxide, ammonia, etc.), circulating water pump, etc
Other
Pharmaceutical paper industry fan, water pump, etc. Sugar industry feeder, press, etc. rubber industry mixer and so on.
Electricity
Induced draft fan, blower, primary fan, secondary fan, feed water pump, circulating water pump, condensate pump, mortar pump, etc.
Mine
Main and auxiliary shaft hoist, main fan, pressure fan, extraction fan, air Compressor, gas drainage pump, medium pump, drainage pump, belt machine, roller Press, etc.
1. Dynamic active filter, comprehensively improve power quality;
2.DSP full digital control, 20KHz switching frequency, quick response to dynamic load changes;
3. The number of harmonic compensation can be selected, the maximum can filter out 50 harmonics;
4. Suttons active power filter can optionally compensate reactive power at the same time;
5. With three-phase unbalance compensation ability;
6. With automatic current limiting function, no overload occurs;
7. High efficiency, full load loss less than 2.57;
8. Parallel installation mode, simple installation, small volume;
9. Reduce line loss, eliminate transformer and motor heating caused by harmonics, and realize significant energy saving of the system;
10. The filtering effect of active power filter is not affected by the change of system impedance, and can automatically suppress the system resonance;
11. Select partial compensation, partial compensation or total compensation according to the distribution structure. CT can be located on the power side or the load side;
12. Easy to expand and redundancy design, up to 10 parallel operation.
