APF有源电力滤波器

APF有源电力滤波器是基于电压源逆变器的新型电力电子谐波滤除装置，通过实时检测电网中由非线性负载产生的电流波形，分离出谐波电流部分，并通过IGBT逆变器输出反相

补偿电流，实现滤除谐波的功能。另外，APF还可以提供超前或滞后的无功电流，用于改善电网的功率因数和实现动态无功补偿。和LC型的无源滤波相比，该产品是主动型补偿

装置，动态性能好，安全性高，适应性强。

  1、APF内部均采用国际著名品牌、技术成熟、性能先进的元器件。  

2、独立于电网系统阻抗之外，不受电网系统阻抗影响，不发生谐振与谐波电压放大，安全性好。 

3、控制器采用了DSP和FPGA芯片，采用矢量筛选技术，可全部滤除2次到50次谐波，或选择滤除特定次数谐波。 

4、内置谐波补偿、无功补偿、不平衡补偿等多种补偿功能，用户可自行设定选择补偿功能。 

5、装置永不过流，在滤波的同时，能完全避免过补偿。可根据负荷变化，自动合理限制补偿电流，既具有良好的补偿性能，又可保证装置安全可靠工作。 

6、采用先进的防止与系统发生谐振的控制方法，彻底消除了装置本身与系统发生谐振的可能，提高了供电系统的可靠性。 

7、具备完整的保护功能，包括过载、过电压、欠电压、过电流等，以及自诊断功能。 

8、具有缓启动控制回路，避免启动瞬间过大的冲击电流，并限制在额定范围内。 

9、采用通用的modbus远程通信协议，通信接口为RS485/232和CAN总线。 

10、扩展性能好，可多台APF并联应用。 

11、友好的操作和显示人机界面，可提供完整的现场信息。 

12、独创的智能启动系统，具备一键并网和系统断电装置自动投入等功能。 

13、电缆可从装置柜体顶部或底部进入，安装灵活。

APF active power filter

APF active power filter is a new power electronic harmonic filter based on the voltage source inverter, through the load current waveform generated by the nonlinear real-time detection of power grid, to separate the harmonic current, and through the IGBT inverter output phase

Compensating current to realize the function of filtering harmonics. In addition, the APF can also provide pre or lagging reactive current, which is used to improve the power factor of the grid and realize dynamic reactive power compensation. Compared with LC passive filter, this product is active compensation

The utility model has the advantages of good dynamic performance, high safety and strong adaptability.

1, APF internal use of internationally renowned brands, mature technology, advanced performance components.

2, independent of the power grid system impedance, not affected by the power grid system impedance, resonance and harmonic voltage amplification, safety is good.

3, the controller adopts DSP and FPGA chip, adopts vector screening technology, can filter out 2 to 50 harmonics, or choose to filter a specific number of harmonics.

4, built-in harmonic compensation, reactive power compensation, imbalance compensation and other compensation functions, users can set the choice of compensation function.

5, the device never over flow, while filtering, can completely avoid over compensation. The utility model can automatically and reasonably limit the compensating current according to the change of load, and has the advantages of good compensation performance and safe and reliable operation of the device.

6, the use of advanced prevention and system resonance control method, completely eliminates the possibility of resonance between the device itself and the system, and improve the reliability of the power supply system.

7 、 with complete protection functions, including overload, over-voltage, undervoltage, over-current, and self diagnostic function.

8 、 with slow start control circuit, to avoid starting instant excessive impact current, and limited within the rated range.

9, the use of universal MODBUS remote communication protocol, communication interface for RS485/232 and CAN bus.

10, the expansion performance is good, can many APF parallel application.

11 、 friendly operation and display man-machine interface, can provide complete field information.

12, the original intelligent start-up system, with one key grid connected and system power failure device, automatic input and other functions.

13 、 the cable can enter from the top or bottom of the device cabinet, and the installation is flexible.