Realization On Detecting Harmonic And Reactive Current Circuitry Of Active Power Filter

With the development of electric-electronic technology, the use of electric-electronic installations is being extensive, harmonic pollution of which produces is also heavy more and more, which forces us to study it harder that suppressing harmonic and compensating the reactive power. With the development of electric-electronic technology, microelectronic technique and modern control theory, and with studying harmonic suppression and reactive power compensation using it, the active power filter has improved greatly. The methods and the circuit of detecting current have already improved greatly. Based on analytical study of lots of existing methods of detecting current, this paper presents a frequency-domain analysis method, which adapts accomplished by DSP (digital signals processor). Simulation results are presented. They prove that it has good real-time processing, nicety performance. Based on the method, the author sets up a integrated circuitry of detecting current. This circuitry can make signal collector and data processing that is made up of digital signal processor as central processing unit. The testing results prove that it has good dynamic, static performance. Wang Bin (Electrical Engineering Theory and New Technology) Directed by :Vice-Prof. Yan Xiangwu...