Analysis of multi-loop control strategies for power conversion applications

Multi-loop control strategies have commonly been used to control power converters of both the voltage-source and current-source topologies for power conversion applications including uninterruptible power supplies and utility interfaces for distributed power generation. However, these control strate...

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Bibliographic Details
Main Authors: Poh Chiang Loh, Holmes, D.G.
Format: Conference Proceeding
Language:English
Subjects:
Control systems
Distributed power generation
Feedback control
Input variables
MATLAB
Optimal control
Power conversion
Topology
Uninterruptible power systems
Voltage control
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Summary:Multi-loop control strategies have commonly been used to control power converters of both the voltage-source and current-source topologies for power conversion applications including uninterruptible power supplies and utility interfaces for distributed power generation. However, these control strategies tend to be developed and comparatively evaluated for a particular application, with strategies for other applications presented as independent new developments. This paper presents a generalized analysis of different multi-loop control approaches using alternative feedback control variables for several system configurations, highlighting similarities and identifying a generalized optimal control variable selection criterion that is applicable across most multi-loop controlled power conversion systems. The principles presented have been verified by both detailed MATLAB simulation and experimental investigations.
DOI:10.1109/IAS.2003.1257796