Bounded Control for DC/DC Converters: Application to Renewable Sources

Iovine, Alessio; Mazenc, Frédéric

doi:10.1109/cdc.2018.8619381

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…However, only constant current loads are considered and the controller requires local information (including the load) and the value of the resistance of the lines interconnecting with the neighboring nodes. Under the assumption that the equilibrium point is known, a novel nonlinear control law that takes into account the constraints of the control action is proposed in [18].…”

Section: A Literature Review and Main Contributionsmentioning

confidence: 99%

Robust Passivity-Based Control of Boost Converters in DC Microgrids^⋆

Cucuzzella

Lazzari

Kawano

et al. 2019

2019 IEEE 58th Conference on Decision and Control (CDC)

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This work deals with the design of a robust and decentralized passivity-based control scheme for regulating the voltage of a DC microgrid through boost converters. A Krasovskii-type storage function is proposed and a (local) passivity property for DC microgrids comprising unknown 'ZIP' (constant impedance 'Z', constant current 'I' and constant power 'P') loads is established. More precisely, the input portvariable of the corresponding passive map is equal to the first-time derivative of the control input. Then, the integrated input port-variable is used to shape the closed loop storage function such that it has a minimum at the desired equilibrium point. Convergence to the desired equilibrium is theoretically analyzed and the proposed control scheme is validated through experiments on a real DC microgrid.

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Section: A Literature Review and Main Contributionsmentioning

confidence: 99%

Robust Passivity-Based Control of Boost Converters in DC Microgrids^⋆

Cucuzzella

Lazzari

Kawano

et al. 2019

2019 IEEE 58th Conference on Decision and Control (CDC)

View full text Add to dashboard Cite

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“…where e v is the output voltage error (9). The coefficients α 0 , β 0 , β 1 , and β 2 are defined by…”

Section: A Saturated Controller For Comparisonmentioning

confidence: 99%

“…A buck converter produces an output voltage lower than its input power voltage and finds its use in a wide range of applications, such as regulated voltage sources, battery-powered handheld devices, battery chargers for electric vehicles [6], photovoltaic systems [7], LED illumination [1], drivers for DC motors and, more recently, DC microgrids [8] and renewable sources [9], to name a few. Textbooks introducing theoretical concepts on the history and technical development of power converters are [1], [4], [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Controller for an Input-Saturated DC–DC Buck Power Converter

Garćıa-Alarćon

Moreno–Valenzuela

2019

IEEE Access

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In this paper, a novel controller for an input-saturated direct current to direct current (DC-DC) buck power converter has been proposed. The control scheme guarantees global asymptotic stability, even though the input to the power converter is affected by a hard saturation nonlinearity that results from the fact that in practice the duty cycle can only take continuous values between zero and one. Specifically, asymptotic stability is ensured by using a special quadratic-type Lyapunov function and LaSalle's invariance principle. In addition, to prevent inductor current's noisy measurements, an observer is proposed together with the proposed control law. Stability is also discussed rigorously for the resulting observer-based scheme. The real-time experimental comparisons with respect to a known approach are presented. Better performance is obtained with the novel observer-based controller. INDEX TERMSBuck power converter, input saturation, Lyapunov's stability, observer-based controller, real-time experiments.

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“…The combination of a photovoltaic plant with a two-cell buck converter with input saturation was analyzed in [22]. In [23], the maximum power from a photovoltaic array is obtained, taking into account input constraints of a boost DC-DC converter. In [24] and [25], observers for a saturated control law were analyzed in order to regulate the output voltage of a boost power converter.…”

Section: Introductionmentioning

confidence: 99%

PI-Type Controllers and Σ–Δ Modulation for Saturated DC-DC Buck Power Converters

et al. 2021

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Departing from analyzing a general input-saturated second-order system, a Lyapunov-based constructive procedure for the output-feedback stabilization of the constantly perturbed DC-DC buck power converter is presented. The proposed scheme also incorporates a Σ-∆ modulator. The obtained control scheme is developed in two parts: a proportional-integral-type family of algorithms devoted to regulating the uncertain system by using measurements of the output voltage and a Σ-∆ modulator dedicated to transforming the control action into a {0, 1} discrete-valued signal. This modulator is a kind of a sliding controller, which can be seen as a subsystem with an on-off output. This combination, the PI-type family of controllers and the Σ-∆ modulator, assures the global stability of the closed-loop system, even if parametric uncertainties are presented. The convergence analysis was carried out using Lyapunov's method. The theoretical results are confirmed using real-time experimental tests, which demonstrate the anti-windup scheme and the Σ-∆ modulator efficiency. The experiments consider the saturation of the control input and disturbances, having obtained convincing results. INDEX TERMS DC-DC buck converter; Lyapunov's method; saturation control; Σ-∆ modulator; experimental results Recently, efficient control strategies have been designed for several types of power converters. A discontinuous con

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Bounded Control for DC/DC Converters: Application to Renewable Sources

Cited by 6 publications

References 24 publications

Robust Passivity-Based Control of Boost Converters in DC Microgrids^⋆

Robust Passivity-Based Control of Boost Converters in DC Microgrids^⋆

Analysis and Design of a Controller for an Input-Saturated DC–DC Buck Power Converter

PI-Type Controllers and Σ–Δ Modulation for Saturated DC-DC Buck Power Converters

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Bounded Control for DC/DC Converters: Application to Renewable Sources

Cited by 6 publications

References 24 publications

Robust Passivity-Based Control of Boost Converters in DC Microgrids⋆

Robust Passivity-Based Control of Boost Converters in DC Microgrids⋆

Analysis and Design of a Controller for an Input-Saturated DC–DC Buck Power Converter

PI-Type Controllers and Σ–Δ Modulation for Saturated DC-DC Buck Power Converters

Contact Info

Product

Resources

About

Robust Passivity-Based Control of Boost Converters in DC Microgrids^⋆

Robust Passivity-Based Control of Boost Converters in DC Microgrids^⋆