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A novel method for active filter current regulation using deadbeat control
Author(s) -
Hamasaki ShinIchi,
Kawamura Atsuo
Publication year - 2003
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.10201
Subject(s) - inverter , pulse width modulation , control theory (sociology) , current (fluid) , engineering , active filter , digital control , voltage source , filter (signal processing) , voltage , electronic engineering , computer science , control (management) , electrical engineering , artificial intelligence
The shunt‐type active filter (AF), which is widely used due to its protection capability, is installed in parallel to the load. It is considered as an ideal current source and it compensates the harmonic current of the load. However, the AF is practically realized by a current regulator using a voltage source‐type inverter, and it is very difficult to realize the AF current as an ideal current source, especially when it is controlled by digital equipment. A new control scheme for a line current detection AF is proposed to improve the current regulation capability based on digital deadbeat control. The current control scheme is achieved by controlling the intermediate voltage of the inverter output filter so that the AF output current is regulated, using the dead‐beat control law for the calculation of the pulse width of the PWM inverter. In the proposed scheme, the current regulation performance is much better than in the conventional one. The control method, mathematical analysis, simulation results, and experimental results are presented in this paper. © 2003 Wiley Periodicals, Inc. Electr Eng Jpn, 145(2): 67–77, 2003; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10201