Satons Active Filters

详情

Active filter (APF).

The Suttons active filter detects the load current in real time through the external current transformer CT, and extracts the harmonic component of the load current through the internal DSP calculation, and then sends it to the internal IGBT through the PWM signal, and controls the inverter to generate a current equal to the size of the load harmonic and the opposite direction is injected into the power grid to compensate for the harmonic current to realize the filtering function.

Customized design for the industry to meet the multiple needs of users. ***0 harmonic compensation, comprehensive protection function to ensure stable operation of the equipment, humanized operation interface information at a glance. Multiple modules work separately in parallel, and the exit of the faulty module does not affect the normal operation of the remaining modules.

APF filter device filtering principle

APF active filter through the external current transformer CT, real-time detection of the load current, through the internal DSP calculation, extract the harmonic component of the load current, and then send it to the internal IGBT through the PWM signal, control the inverter to generate a current equal to the load harmonic magnitude, opposite direction into the power grid to compensate for the harmonic current, to achieve the filtering function. Using the parallel connection method, by detecting the harmonic component of the load in real time, PWM change technology is adopted to inject the harmonic current with the same magnitude and opposite direction into the power supply and distribution system to realize the function of filtering out harmonics.

Performance description

1. Dynamic active filtering to improve power quality;

2. DSPdigital control, *0KHzswitching frequency, dynamic change response to load;

3.The number of harmonic compensation can be selected, which can filterout *0thharmonics;

4.Active power filtercan optionally compensate reactive power at the same time;

5. With three-phase imbalance compensation ability;

6.With automatic current limiting function, no overload will occur;

7.High efficiency, full load loss less than2.*7;

8. Parallel installation mode, simple installation and small size;

9.Reduce line loss, suppress transformer and motor heating caused by harmonics,and realize great energy saving in the system;

*0.The filtering effect of the active power filteris not affected by the change of system impedance, and can automatically suppress the system resonance;

*1.According to the power distribution structure, local compensation, partial compensation or total compensation can be selected, andCTcan be located on the power side or load side;

*2. Easy expansion and redundant design, up to*0units can be operated in parallel.