Dsp-based Active Power Filter

Active Power Filter(APF) is a equipment used to dynamically clearing up harmonic and compensating reactive power, APF has a fine prospect. Control of APF is very import to affect Active Signal Filter Performance. Digital Signal Processor(DSP)have the characteristic of process the signal is very quickly ,so it adapt to control the APF.A general description of the control arithmetic based on the principle of APF in this paper, and made an experiment equipment. TMS320F240 is the hard core as the processor.Chapterl discuss the harmonic and its nascence, harmonic pollution and hazardChapter2 discuss the principle and structure of Active Power FilterChapters discuss the design of hardware circuit, electric current detect circuit, synchronization signal generating circuit and main circuit.Chapter4 discuss the control arithmetic and software design based on the Digital Signal Processor. Discuss the arithmetic about the harmonic and the reactive command current, DC Side Voltage control, discuss the sampling interrupt subroutine and through the zero subroutine flow char and discuss some examples about software.Chapters discuss the experiment equipment and experiment resultThe project is the major fund item of Guangzhou technology committee. Research and Development through GuangDong University of Technology and Nanyang electrical equipment factory cooperate. In the future the experiment equipment will be manufactured and salt, has a fine prospect.