Nonlinear control and operation of DC to DC switching power converters

Conventional control of switching power conversion is based on a linear model of the system, which limits its scope and performance. This thesis addresses a family of control and operation issues that arise from the nonlinear nature of the switching power conversion. The focus is on dc to dc power converters with a small number of states. Nonlinear noise analysis of conventional feedback has been performed to evaluate this important aspect of converter performance. Alternative schemes are developed that reduce noise susceptibility, reduce effects of source and load disturbance, and improve system operation. A nonlinear control scheme called sensorless current mode (SCM) control has been developed that emulates current mode control without current sensing. SCM has very significant advantages in dynamic range and noise susceptibility. Optimal control approaches to switching power conversion has been explored. Optimization of a nonmonotonic tuning problem has also been explored. A generalized tuning scheme has been developed and implemented for practical converters with excellent results.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Midya, Pallab

Contributors dc:contributor

• Krein, Philip T.

• Electrical Engineering

Statement dc:rights

• Copyright 1995 Midya, Pallab

Language dc:language

eng

Identifier

9780591637748
AAI9812942
(UMI)AAI9812942

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19023