Digital current mode control for multiple input converters

In this thesis, the possibility of applying digital current mode control on multiple-input (MI) converters is studied. As for MI topologies having a central energy transfer inductor, the predictive constant on-time current-mode control can greatly reduce both the design and digital realization efforts needed. By doing digital constant on-time current-mode control, the control of MI buck and MI buck-boost converters can be simplified into an equivalent-single-input converter control problem. The small signal models of digital constant on-time controlled single-input (SI), MI buck and SI, MI buck-boost converters in both CCM and DCM are proposed. Simulations and experiments were built to verify the proposed models.

Name thesis:degree_name

Master of Science in Engineering

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Electrical and Computer Engineering

Grantor

University of Texas at Austin

Year dc:date.issued

2012

Author dc:creator

• Ding, Guanyu, 1987-

Advisor dc:contributor.advisor

• Kwasinski, Alexis, 1970-

• Power electronics
• Multiple-input converter
• Current-mode control
• Digital
• Constant on-time control

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/2152/ETD-UT-2012-08-6274

OAI identifier oai:identifier

oai:repositories.lib.utexas.edu:2152/ETD-UT-2012-08-6274