Active power filter main circuit for the IGBT power converter, based on instantaneous reactive power theory detection technology, automatic tracking of harmonic changes in the network, with a high degree of controllability and rapid response.It overcomes the poor filtering effect of the traditional passive filter, easy to produce resonance, can only filter out the shortcomings of the fixed harmonic, and can play a good filtering and compensation effect on the impact loads of various fast transients.
DY-APF series of second-generation active filter is an integrated active filter technology upgrade products. DY-APF series of active filters using military-level control chip, computing power and anti-interference is extremely strong, can realize a controller centralized control multiple active filters parallel work, using adaptive current average control algorithm combined with LCL topology to overcome the traditional hysteresis current control due to the switching frequency changes brought by the wide output spectrum range , Filtering more difficult, high-frequency harmonics will interfere with the shortcomings of the power grid.
Second, the use of the environment:
Installation: indoor installation, optional fixed way, the cable into the line optional.
Ambient temperature: -25 ℃ ~ +55 ℃.
Storage temperature: -40 ℃ ~ 65 ℃.
Relative humidity: up to 95%, no condensation.
Altitude: Installation of less than 2000 meters above sea level (other special needs to be customized).
Third, product characteristics:
Excellent filtering ability: Harmonic filter rate greater than 97%.
Control system uses military grade FPGA chip: super computing power.
High reliability and parallel mode: centralized control with the same controller, no loop between the modules.
Three-level structure: smooth output, low device loss.
Expansion of building blocks to install the structure: easy expansion and maintenance.
All data are using optical fiber communication: anti-interference ability.
Adaptive Control Algorithm: Adapt to any system impedance change.
Each harmonic current output can be limited: filter with passive filter with the same harmonic filter.
High-quality brand components: imported German Infineon IGBT module, Swiss concept drive, the United States xilinx main controller chip, the French Schneider circuit breakers, the United States avago optical fiber.
Complete product models, a 380V, 690V full range of capacity products, covering various industries.
Fourth, product use:
Products have been widely used in rail transit, data centers, hospitals, high-grade office buildings, stadiums, musical theater, airports, chemicals, ports, power generation, metallurgy, more than 20 industries.
Fifth, product parameters:
Gas characteristics | Rated voltage (V) | AC380±15%或690±15% |
Working frequency (Hz) | 50±5% |
Electrical wiring | Three-phase three-wire / three-phase four-wire |
Rated filter current (A) | 50 | 100 | 150 | 200 | 300 | 400 | 500 |
CT requirements | Requires 3 CTs, 5VA, CT secondary current 5A |
Filter range | 2 ~ 51 harmonics (can be selectively filtered, each harmonic can be set separately) |
Filtering degree | The selected harmonic can be amplitude-compensated |
Filtering capabilities | ＞97% |
Reactive power compensation | Built-in harmonic compensation, reactive power compensation, imbalance compensation and other compensation functions, users can set their own choice of compensation. |
Response time | 1ms |
Active power loss | <3% of rated module power |
Overload capacity | 120%，1 minute |
Multiple operating modes | Parallel operation (single bus no more than 20 units) |
Mean time to be failure | ≥ 100,000 hours |
Control features | On-off level | Average 20kHz |
Control algorithm | Frequency Domain Filtering Vector Compensation Algorithm with Adaptive Capability |
Controller | Full FPGA controller |
Communication function | Using Modbus remote communication protocol, communication interface RS485 / 232 and CAN bus |
Control connection | Fiber optic, or electrical connection |
Structure | Dimensions | 1000 (W) × 1000 (D) × 2200 (H) Can be customized according to customer requirements |
weight | <600kg |
Degree of protection | IP20 or customized according to user requirements |
colour | RAL7035 (light gray) or customized according to user requirements |
cooling method | Forced air cooling |
The whole frame | Floor type |
Installation method | Indoor installation, optional fixed way, the cable into the line optional |
Electromagnetic compatibility standards and testing | Complies with GB / T.7251-2005 (GB / T7261-2000) Including attenuation of shock wave burst interference, electrostatic discharge interference, radiation electromagnetic interference, rapid transient interference, surge (impact) interference, voltage interruption immunity, Electromagnetic launch test |
