Hybrid Control of DC-DC Power Converters

Cervantes, Ilse; Pérez-Pinal, Francisco J.; Mendoza-Torres, Angelica

doi:10.5772/7370

Cited by 3 publications

(4 citation statements)

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“…A switched controller designed via Lyapunov approach in [4] is employed to control a power converter system in [23] and it was shown to provide better performance on transient and steady dynamics than continuous PID controllers. More details can be found in the survey of hybrid control techniques for power converter systems [9,26]. This observation provides a partial motivation for developing averaging techniques for hybrid systems that can be used to analyze a class of hybrid PWM systems in general and power converter systems in particular.…”

Section: Modelsmentioning

confidence: 96%

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Input-to-state stability for a class of hybrid dynamical systems via averaging

Wang

Nešić

Teel

2011

Math. Control Signals Syst.

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Input-to-state stability (ISS) properties for a class of time-varying hybrid dynamical systems via averaging method are considered. Two definitions of averages, strong average and weak average, are used to approximate the time-varying hybrid systems with time-invariant hybrid systems. Closeness of solutions between the timevarying system and solutions of its weak or strong average on compact time domains is given under the assumption of forward completeness for the average system. We also show that ISS of the strong average implies semi-global practical (SGP)-ISS of the actual system. In a similar fashion, ISS of the weak average implies semi-global practical derivative ISS (SGP-DISS) of the actual system. Through a power converter example, we show that the main results can be used in a framework for a systematic design of hybrid feedbacks for pulse-width modulated control systems.

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Section: Modelsmentioning

confidence: 96%

“…SetK := K × B ⊂ R n ×R m . Let η wa (x, w, τ, τ 0 , μ) be defined as (9). LetK generate L K ≥ 1 such that Assumption 3 holds for all ((x 1 , w 1 ), τ a ), ((x 2 , w 2 ), τ b ) ∈ (C ∩K ) × R ≥0 and τ 0 ∈ [0, min{τ a , τ b }] with L := L K .…”

Section: C2 Proof Of Theoremmentioning

confidence: 99%

Input-to-state stability for a class of hybrid dynamical systems via averaging

Wang

Nešić

Teel

2011

Math. Control Signals Syst.

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“…Switched control has gained much attention recently due to its property of being easily implemented, especially in the field of power converters. Power converters play an important role in the field of renewable energy: they are used to connect renewable sources to powergrids, optimize the efficiency of solar panels and wind generators (see, e.g., [1]). In some topologies, there is however a dramatic increase of the number of switches, which entails an increasing number of degrees of freedom, and complicates the controller design .…”

Section: Introductionmentioning

confidence: 99%

Correct-by-design Control Synthesis for Multilevel Converters using State Space Decomposition

Feld

Fribourg²,

Labrousse

et al. 2014

Electron. Proc. Theor. Comput. Sci.

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High-power converters based on elementary switching cells are more and more used in the industry of power electronics owing to various advantages such as lower voltage stress and reduced power loss. However, the complexity of controlling such converters is a major challenge that the power manufacturing industry has to face with. The synthesis of industrial switching controllers relies today on heuristic rules and empiric simulation. The state of the system is not guaranteed to stay within the limits that are admissible for its correct electrical behavior. We show here how to apply a formal method in order to synthesize a correct-by-design control that guarantees that the power converter will always stay within a predefined safe zone of variations for its input parameters. The method is applied in order to synthesize a correct-by-design control for 5-level and 7-level power converters with a flying capacitor topology. We check the validity of our approach by numerical simulations for 5 and 7 levels. We also perform physical experimentations using a prototype built by SATIE laboratory for 5 levels.

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“…This last, due to that the converter does not stabilize anymore in operation points over a single operation region, instead, it must stabilize in operating points over operation regions that switch over time [42]. To this end, some authors had proposed several control syntheses such as intelligent [43], linear quadratic [44], passivity-based [45] by pulse adjustment [46] and hybrid controllers [47]. These techniques deal with local solutions (decoupled for each operation region) and not with a global one, which, in implementation terms, implies decoupling strategies and delays.…”

Section: Introductionmentioning

confidence: 99%

Switched Polytopic Controller Applied on a Positive Reconfigurable Power Electronic Converter

et al. 2018

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Abstract:The reconfigurable power electronic converters (RPECs) are a new generation of systems, which modify their physical configuration in terms of a desired input or output operation characteristic. This kind of converters is very attractive in terms of versatility, compactness, and robustness. They have been proposed in areas such as illumination, transport electrification (TE), eenewable energy (RE), smart grids and the internet of things (IoT). However, the resulting converters operate in switched variable operation-regions, rather than over single operation points. As a result, there is a complexity increment on the modeling and control stage such that traditional techniques are no longer valid. In order to overcome these challenges, this paper proposes a kind of switched polytopic controller (SPC) suitable to stabilize an RPEC. Modeling, control, numerical and practical results are reported. To this end, a 400 W positive synchronous bi-directional buck/boost converter is used as a testbed. It is also shown, that the proposed converter and robust controller accomplish a compact, modular and reliable design during different working configuration, operation points and load changes.

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Hybrid Control of DC-DC Power Converters

Abstract: +PVTQFWEVKQP 4GXKGY QH 4GPGYCDNG 'PGTI[,

Cited by 3 publications

References 0 publications

Input-to-state stability for a class of hybrid dynamical systems via averaging

Input-to-state stability for a class of hybrid dynamical systems via averaging

Correct-by-design Control Synthesis for Multilevel Converters using State Space Decomposition

Switched Polytopic Controller Applied on a Positive Reconfigurable Power Electronic Converter

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