Title :
State-vector feedback 100 kHz carrier PWM power amplifier for high-precision magnetic-field current pattern tracking
Author :
Fukuda, H. ; Nakaoka, M.
Author_Institution :
Kobe Univ., Japan
Abstract :
This paper presents performance evaluations of a high-frequency (100 kHz) carrier switched-mode PWM power amplifier system with its precise high-speed current tracking control scheme. The optimum design concept for its state-feedback control system is described on the basis of state-space averaging modelling of PWM power amplifier and model matching method. The high-frequency carrier switched-mode PWM power amplifier system technology operated by four-quadratic modes is more acceptable for the lower ripple current regulated power supplies for applications which requires high-precise analog oriented control system for the efficient generation of gradient magnetic fields
Keywords :
PWM power convertors; circuit analysis computing; control system analysis computing; control system synthesis; digital simulation; electric current control; optimal control; power MOSFET; power amplifiers; power engineering computing; state feedback; state-space methods; switched mode power supplies; 100 kHz; HF carrier; analog oriented control system; computer simulation; four-quadratic modes; gradient magnetic fields; magnetic-field current pattern tracking; model matching method; optimum design; power MOSFETs; power supply; ripple current; state-space averaging modelling; state-vector feedback; switched-mode PWM power amplifier;
Conference_Titel :
Power Electronics and Variable-Speed Drives, 1994. Fifth International Conference on
Conference_Location :
London
DOI :
10.1049/cp:19940966
