State-vector feedback control-based 100 kHz carrier PWM power conditioning amplifier and its high-precision current-tracking scheme

Abstract

This paper presents performance evaluations of a high-frequency (100 kHz) carrier switched-mode PWM power conversion amplifier system for precise high-speed current-tracking control of electromagnetic circuits. Its computer-aided analysis and some design considerations are described on the basis of state-space averaging analysis and the model matching method. The proposed power conditioning system technology is more acceptable for the current-regulated power supply of magnetic resonance imaging (MRI) machines, which requires analog-oriented unique highly-regulated power electronic circuit systems for the generation of magnetic-gradient fields.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>