Title :
Dynamic analysis of current regulators for AC motors using complex vectors
Author :
Del Blanco, Fernando Briz ; Degner, Michael W. ; Lorenz, Robert D.
Author_Institution :
Dept. of Electr., Comput. & Syst. Eng., Oviedo Univ., Spain
Abstract :
The analysis and design of current regulators for polyphase AC loads is presented using complex vector notation. The AC motor current regulation problem is analyzed by studying both the command tracking and disturbance rejection capability of the current regulator. The use of complex vector notation and the generalization of classical control tools like root locus, frequency-response functions and dynamic stiffness functions to complex vectors provide a way of comparing the performance of different controller topologies. Limitations in the performance of the synchronous frame proportional and integral current regulator are outlined, and several ways of improving its performance are suggested and investigated
Keywords :
AC motors; control system analysis; control system synthesis; electric current control; frequency response; machine theory; machine vector control; root loci; two-term control; AC motor current regulation; PI current regulator; command tracking; complex vector notation; complex vectors; control design; control performance; control simulation; current regulators; disturbance rejection; dynamic analysis; dynamic stiffness functions; frequency-response functions; polyphase AC loads; root locus; synchronous frame; AC machines; AC motors; Associate members; Current control; Frequency; Induction motors; Industry Applications Society; Matrices; Regulators; Topology;
Journal_Title :
Industry Applications, IEEE Transactions on
