Approximate Sensitivity Conditioning and Singular Perturbation Analysis for Power Converters

A sensitivity conditioning control strategy is analyzed in this paper and it is applied to power electronic converters. The term is used to improve closed loop systems, such as power converters with cascaded inner and outer loop controllers. The impact of the sensitivity term is analyzed using singu...

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Bibliographic Details
Published in:arXiv.org 2022-10
Main Authors: Gajula, Kaushik, Marepalli, Lalit Kishore, Herrera, Luis
Format: Article
Language:English
Subjects:
Buck converters
Closed loops
Conditioning
Feedback control
Feedforward control
Permanent magnets
Perturbation methods
Perturbation theory
Power converters
Sensitivity analysis
Singular perturbation
Synchronous machines
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Summary:A sensitivity conditioning control strategy is analyzed in this paper and it is applied to power electronic converters. The term is used to improve closed loop systems, such as power converters with cascaded inner and outer loop controllers. The impact of the sensitivity term is analyzed using singular perturbation theory. In addition, the implementation of the control term is addressed for practical systems, where the number of inputs is generally not sufficient for exact sensitivity conditioning. Simulation results are presented for a buck converter with output capacitor voltage regulation and a Permanent Magnet Synchronous Machine (PMSM), used as a generator with an active rectifier. Finally, experimental results are presented for the buck converter, demonstrating the advantages and feasibility in implementing the approximate sensitivity conditioning term for closed loop power converters.
ISSN:2331-8422