Journal ArticleDOI
Design of a robust voltage controller for a buck-boost converter using /spl mu/-synthesis
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TLDR
The structured singular value (/spl mu/) approach to the problem of designing an output voltage regulator for a buck-boost converter with current-mode control is proposed, allowing a quantitative description of the effects of reactive components' tolerances and operating point variations, which strongly affect the converter dynamics.Abstract:
Proposes the structured singular value (/spl mu/) approach to the problem of designing an output voltage regulator for a buck-boost converter with current-mode control. This approach allows a quantitative description of the effects of reactive components' tolerances and operating point variations, which strongly affect the converter dynamics. First, a suitable linear converter model is derived, whose parameter variations are described in terms of perturbations of the linear fractional transformation (LFT) class. Then, /spl mu/-analysis is used to evaluate the robustness of a conventional PI voltage regulator with respect to the modeled perturbations. Finally, the approximate /spl mu/-synthesis procedure known as D-K iteration is used to design a robustly performing regulator. Simulation results are presented, describing the small and large signal behavior of a reduced order approximation of the /spl mu/-synthesized controller.read more
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A Robust One-Cycle Controlled Full-Bridge Series-Parallel Resonant Inverter for a High-Frequency AC (HFAC) Distribution System
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Direct torque control implementation with losses minimization of induction motor for electric vehicle applications with high operating life of the battery
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Design and experimental operation of a control strategy for the buck-boost DC-AC Inverter
TL;DR: In this article, a double-loop control strategy for buck-boost DC-DC converters is proposed for the inductor current and also a new outer control loop for the output voltage.
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Double loop control of buck-boost converters for wide range of load resistance and reference voltage
TL;DR: In this article, a double-loop control mechanism was developed for an inverting buck-boost converter, which is capable of operating in a wide range of reference voltage and load resistance with unmodelled parameters.
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Robust controller design for a single-phase UPS inverter using μ-synthesis
TL;DR: In this paper, a μ-synthesis based approach to reduce the effects due to variation in DC input voltage and load is proposed, and the robust performance of the resulting feedback controller is theoretically confirmed via μ-analysis.
References
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Journal ArticleDOI
The complex structured singular value
Andrew Packard,John Doyle +1 more
TL;DR: A tutorial introduction to the complex structured singular value (μ) is presented, with an emphasis on the mathematical aspects of μ.
Book
Principles of power electronics
TL;DR: In this paper, the authors present a review of semiconductor devices and their properties, including gate and base drives, and power transistors, as well as feedback control design and an overview of ancillary issues.
Journal ArticleDOI
A new, continuous-time model for current-mode control (power convertors)
TL;DR: In this paper, a current-mode control power convertor model that is accurate at frequencies from DC to half the switching frequency is described for constant-frequency operation, using a simple pole-zero transfer function, which is able to predict subharmonic oscillation without the need for discrete-time z-transform models.
Journal ArticleDOI
Robust control and H ∞ -optimization: tutorial paper
TL;DR: The paper presents a tutorial exposition of H∞-optimal regulation theory, emphasizing the relevance of the mixed sensitivity problem for robust control system design.