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Design and digital implementation of active filter with power balance theory

Design and digital implementation of active filter with power balance theory

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  • Author(s): B.N. Singh 1 ; B. Singh 2 ; A. Chandra 3 ; K. Al-Haddad 3
    • View affiliations
    • Affiliations: 1: Dept. of Electrical Eng., Computer Science University, New Orleans, USA
      2: Dept. of Electrical Eng., Indian Institute of Technology, New Delhi, India
      3: Dept. of Elect. Eng., École de technologie supérieure, Université du Québec, Montréal, Canada
  • Source: Volume 152, Issue 5, September 2005, p. 1149 – 1160
    DOI:  10.1049/ip-epa:20050097 , Print ISSN 1350-2352, Online ISSN 1359-7043
© IEE
Published

The design, development and experimental investigations of an active filter (AF) are considered. A current-controlled voltage source inverter is used as an AF system. The AF system employs power balance theory, which in this investigation is implemented using a TMS320C31 DSP. The design details, including necessary equations of a prototype model of the AF system, are given. The AF system is tested with nonlinear balanced and unbalanced loads to demonstrate its effectiveness and capabilities for harmonic elimination, reactive power compensation, power-factor correction and load balancing. The developed prototype model of the AF system is tested for different operating conditions of nonlinear load. Experimental results are given and discussed in detail.

Inspec keywords: power conversion harmonics; active filters; static VAr compensators; electric current control; invertors; digital signal processing chips; power harmonic filters

Other keywords: load balancing; harmonic elimination; power-factor correction; prototype model; digital signal processor; digital implementation; active filter; current control; power balance theory; voltage source inverter; TMS320C31 DSP; nonlinear balanced load; unbalanced load; reactive power compensation

Subjects: Power convertors and power supplies to apparatus; Other power apparatus and electric machines; Active filters and other active networks; Control of electric power systems; Current control

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