Adaptive Output Feedback Control of Interleaved Parallel Boost Converters Associated with Fuel Cell

Salhi, Boualem; Fadil, H. El; Ahmed‐Ali, Tarek; Magarotto, Eric; Giri, F.

doi:10.1080/15325008.2014.995280

Cited by 16 publications

(9 citation statements)

References 21 publications

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“…However, when system parameters are uncertain, these methods cannot afford to determine the suitable PI (or PID) control gains. Therefore, various kinds of adaptive control that are able to deal with the plants with uncertain parameters have been proposed (Konstantopoulos and Alexandridis, 2015; Salhi et al, 2015). Among the various kinds of adaptive control, model reference adaptive control (MRAC; Black et al, 2014; Ioannou and Fidan, 2006; Sastry and Bodson, 1989) is the most popular and effective ones.…”

Section: Introductionmentioning

confidence: 99%

Two-level control of photovoltaic systems using global perturbation-based extremum seeking control and model reference adaptive control

Tehrani

Shabaninia

2017

Transactions of the Institute of Measurement and Control

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One of the main renewable energy sources for the future is photovoltaic (PV) energy. Hence, working of the PV systems at maximum efficiency is taken into consideration in recent years. In this paper, for improving the performance of the global maximum power point tracking under partial shading conditions and uncertainty in parameters of DC-DC converter, a two-level adaptive control scheme is proposed. The proposed controller is capable of efficiently handling the uncertainties in the PV systems and the perturbations in the environment. The first level is global perturbation-based extremum seeking control (GPESC), and the second level is model reference adaptive control (MRAC). GPESC is used to find global maximum power point and MRAC is utilized to handle the dynamics of the DC-DC converter. Adequate difference in the time constants of control levels, causes decoupled control levels, which in turn makes it easy to design the controller. The performance of the proposed control scheme is evaluated through simulation based on four indicators: tracking accuracy, tracking efficiency, tracking speed and searching resolution for different irradiance patterns. The results are compared with GPESC and GPESC with PID controller.

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Section: Introductionmentioning

confidence: 99%

Two-level control of photovoltaic systems using global perturbation-based extremum seeking control and model reference adaptive control

Tehrani

Shabaninia

2017

Transactions of the Institute of Measurement and Control

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“…The k th buck power converter ( k = 1,…,N) includes a switch S k , a freewheel diode D k , a smoothing inductance L k (with its equivalent series resistance (ESR) r k ), and a filtering capacitor C k . Each converter is controlled using a pulse width modulation. The nonisolated topology of DC‐DC converters is used as a concern is the efficiency and the size of the converter.…”

Section: System Overview and Modelingmentioning

confidence: 99%

Output feedback control of supercapacitors parallel charging system for EV applications: Theoretical design and experimental validation

Belhaj

Fadil

Rachid

et al. 2019

Adaptive Control & Signal

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In this paper, the problem of controlling parallel charging system with supercapacitors for electric vehicle applications is considered. When the vehicle parks at the station, the charging process of supercapacitors needs to be completed in less than 30 seconds. The control objective is then to tightly regulate the supercapacitors state of charge (SOC) to a given reference constant and to ensure an adequate current sharing between different parallel chargers. Indeed, the current sharing is a critical issue for parallel charging system with supercapacitors, which is a nonlinear system with control inputs constraints.Besides, the SOC depends on the supercapacitors internal voltage, which is not accessible for measurement. Therefore, based on a large-signal model of the parallel-chargers-supercapacitors system, an output feedback controller (combining a state observer and a nonlinear control laws) is designed. The controller is formally shown to meet all objectives, namely, closed-loop stability, SOC reference tracking, and equal current sharing. The effectiveness of the proposed output feedback controller approach is verified both by simulation and by experimental tests. KEYWORDSLyapunov stability, nonlinear control, nonlinear observer, parallel chargers, supercapacitors INTRODUCTIONDesigning onboard energy storage systems for electrical vehicles has been an intensive research activity over the last two decades. First, only batteries have been used in the storage system, before supercapacitors where introduced. Recent solutions involved both batteries and supercapacitor in the storage systems. 1,2 Presently batteries are used as energy storage devices in most applications. Such hybridization topologies can result into enhancing the battery performances by increasing its life cycle, rated capacity, reducing the energy losses, and limiting the temperature rising inside the battery. Comparing the charger circuits of batteries and supercapacitors, there are similarities and differences. Concerning similarities, the constant current/constant voltage charging method is generally preferred in both circuits for safety of the storage system. One advantage with batteries is that the range of voltage between discharged and fully charged is not very wide, so it does not pose any issue for charger circuit, while with supercapacitors, it may be needed to reach the fully discharged state, which entails a zero voltage. On the other hand, the use of battery pack necessitates the monitoring and management of the state of charge (SOC) of each individual cell of the battery. This is not an issue with supercapacitors 1374

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“…∀ ≥ 0, where the input source voltage is given as V in , ( ) fl ∈ (0, 1) and Load ( ) denotes the load current. See [6,7,18,19] for a detailed derivation of the averaged dynamical equations of (1).…”

Section: Averaged Dynamics Of Interleaved Dc/dc Boost Convertermentioning

confidence: 99%

“…The DC/DC converters have been widely utilized to supply a high quality DC power despite the disturbances for a variety of industrial applications such as uninterruptible power supply and solar photovoltaic systems [1][2][3][4][5][6]. In these applications, the DC/DC converters are required to be controlled their current and output voltage with a satisfactory closed-loop performance for a wide range of operating region in the presence of the converter parameter and unexpected load variations.…”

Section: Introductionmentioning

confidence: 99%

Proportional-Type Output Voltage-Tracking Controller for Interleaved DC/DC Boost Converter with Performance Recovery Property

Kim

2018

Mathematical Problems in Engineering

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This paper proposes an offset-free proportional-type output voltage-tracking algorithm embedding the disturbance observers (DOBs) for the N-phase interleaved DC/DC boost converter through a systematical multivariable approach. The contributions of this article fall into two parts. The first one is to design the first-order nonlinear DOBs for exponentially estimating the disturbances caused by the model-plant mismatches. The second one is to prove that the proposed proportional-type controller equipped with the DOBs guarantees the performance recovery property as well as the offset-free property. The performance of the proposed method is evaluated through simulations and experiments using a 3-kW four-phase interleaved DC/DC boost converter, comparing the proposed and feedback linearizing (FL) methods.

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Adaptive Output Feedback Control of Interleaved Parallel Boost Converters Associated with Fuel Cell

Cited by 16 publications

References 21 publications

Two-level control of photovoltaic systems using global perturbation-based extremum seeking control and model reference adaptive control

Two-level control of photovoltaic systems using global perturbation-based extremum seeking control and model reference adaptive control

Output feedback control of supercapacitors parallel charging system for EV applications: Theoretical design and experimental validation

Proportional-Type Output Voltage-Tracking Controller for Interleaved DC/DC Boost Converter with Performance Recovery Property

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