Title :
A fuzzy set theory based control of a phase-controlled converter DC machine drive
Author :
Sousa, Gilberto C D ; Bose, Bimal K.
Author_Institution :
Dept. of Electr. Eng., Tennessee Univ., Knoxville, TN, USA
Abstract :
Fuzzy logic or fuzzy set theory is getting increasing emphasis in process control applications. The paper describes application of fuzzy logic in a speed control system that uses a phase-controlled bridge converter and a separately excited DC machine. The fuzzy control is used to linearize the transfer characteristics of the converter in discontinuous conduction mode occurring at light load and/or high speed. The fuzzy control is then extended to the current and speed control loops, replacing the conventional proportional-integral (PI) control method. The compensation and control algorithms have been developed in detail and verified by digital simulation of a drive system. The simulation study indicates the superiority of fuzzy control over the conventional control methods
Keywords :
DC motors; bridge circuits; electric drives; fuzzy control; fuzzy set theory; machine control; phase control; power convertors; velocity control; bridge converter; compensation algorithm; control algorithm; current control; digital simulation; discontinuous conduction mode; fuzzy logic; fuzzy set theory; phase-controlled converter DC machine drive; speed control system; transfer characteristics; Bridges; DC machines; Digital simulation; Fuzzy control; Fuzzy logic; Fuzzy set theory; Pi control; Process control; Proportional control; Velocity control;
Journal_Title :
Industry Applications, IEEE Transactions on
