Functional characteristics
1. can simultaneously filter out 2nd to 5th harmonics, up to 50 harmonics.
2. Use a high-definition 5.7-inch Chinese color touch screen.
3. Zero-sequence harmonics (three-phase four-wire) in the zero line can be filtered out.
4. For the target harmonics, the effective filtering ability can reach more than 97%.
5. The response time is less than 100μs, and the complete compensation time of step-change harmonics is less than 10ms( 1/2 cycle).
6. Using adaptive domain filtering vector compensation algorithm can ensure the best filtering accuracy.
7. Adaptive harmonic filtering, automatic filtering, no need to set filtering mode and choose harmonic filtering type.
8. It can automatically adapt to the impedance change of the power grid.
9. Harmonics can be filtered without changing reactive power and load balance.
10. It can generate reactive power and control power factor.
1 1. It can balance the load current between phases.
12. Automatic current limiting will not overload at 100% rated output.
13.KYYLB active power filter can realize parallel connection of eight devices and centralized control with only one FPGA, which overcomes the shortcomings of communication delay and possible interference among multiple controllers, enhances the compensation performance of KYYLB active power filter and improves the reliability of the system.
14.KYYLB active power filter adopts closed-loop control strategy, combined with original adaptive current average control algorithm. Because the switching frequency of current average control is constant, it overcomes the shortcomings of traditional hysteresis current control, such as wide output spectrum range, difficult filtering and high-frequency harmonic interference to the power grid, and makes KYYLB active power filter achieve excellent filtering performance.
15. Spartan3adsp FPGA of Xilinx company is adopted for centralized control. The clock frequency of FPGA is as high as 200MHz, and 84 hardware DSP units are built in. DSP runs in parallel, and the operation speed is much higher than that of single DSP control mode. The communication delay is small, the response speed is faster, and it is convenient to adopt more advanced control algorithms.
16. The design and selection are simple, and no detailed power grid analysis is needed, only the magnitude of harmonic current needs to be measured.
17. Realize fault recording and event recording, and query the history.
application area
KYYLB active power filter has a wide range of applications, from the most commonly used iron and steel enterprises and other non-ferrous metal smelting and processing enterprises, to coal mines, paper-making, chemical, glass, textile, electronics and large-scale integrated circuit chip manufacturing enterprises, as well as a large number of computer servers required by the it industry. KYYLB active power filter is needed to ensure the reliable and stable operation of its production line.
KYYLB active power filter is suitable for harmonic filtering of three-phase three-wire industrial loads (systems with rated voltages of 380V, 660V, 690V, 1 140V), such as rectifiers, frequency converters, large UPS, intermediate frequency furnaces, arc furnaces and other nonlinear loads.
KYYLB active power filter is suitable for harmonic filtering of three-phase four-wire (rated voltage 380V/220V) loads, such as lighting equipment, computers, UPS, elevators, inverter air conditioners and other nonlinear loads in commercial office buildings. It is especially suitable for harmonic filtering of the first and second harmonic currents generated by the neutral line of nonlinear load.