Title :
Optimum digital control of PWM rectifiers
Author :
Tenti, Paolo ; Zuccato, Alessandro ; Rossetto, Leopoldo ; Bortolotto, Mirco
Author_Institution :
Dipartimento di Elettronica e Inf., Padova Univ., Italy
Abstract :
The paper presents an optimum digital control technique suitable for three-phase PWM rectifiers with a capacitive filter in the DC link. The proposed technique is based on a predictive current control loop, which does not need line voltage sensing and results in minimum RMS current absorption and unity power factor in any operating condition. Moreover, a smooth transition from sinusoidal to square-wave operation is provided and calculation delays are compensated. The control algorithm has been implemented on a INTEL 80C196KC microcontroller and tested on a 2.5 kVA prototype. Some experimental results are reported together with a description of the implemented algorithms
Keywords :
PWM power convertors; microcontrollers; optimal control; power engineering computing; rectifying circuits; 2.5 kVA; DC link; INTEL 80C196KC microcontroller; PWM rectifiers; capacitive filter; control algorithm; minimum RMS current absorption; optimum digital control; predictive current control loop; square-wave operation; unity power factor; Absorption; Current control; Delay; Digital control; Digital filters; Microcontrollers; Pulse width modulation; Reactive power; Rectifiers; Testing;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on
Conference_Location :
Bologna
Print_ISBN :
0-7803-1328-3
DOI :
10.1109/IECON.1994.397808
