Fixed-boundary-layer Sliding-mode and Variable Switching Frequency Control for a Bidirectional DC–DC Converter in Hybrid Energy Storage System

Zhang, Xi; Yin, Chengliang; Bai, Hua

doi:10.1080/15325008.2017.1361486

Cited by 10 publications

(3 citation statements)

References 30 publications

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“…Bidirectional isolated DC–DC converters are presently the key component of many high-power devices, such as photovoltaic systems 1 , energy storages 2 – 4 , and electrical vehicles 4 – 6 . These applications require a lightweight and small power converter with high-efficiency to increase the power density; besides, galvanic isolation is needed for safety reasons.…”

Section: Introductionmentioning

confidence: 99%

Current stress minimization for isolated dual active bridge DC–DC converter

Rashwan

Ali

Senjyu

2022

Sci Rep

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This paper presents a new phase-shift modulation for isolated dual active bridge (DAB) direct current–direct current (DC–DC) converter. The proposed technique aims to minimize the maximum current stress of the converter, which could directly increase the efficiency and reduce the device losses. This modulation technique controls the converter power through only two phase-shift angles or two degrees of freedom; one phase shift is used between the legs of its first bridge and the other one between the legs of the second bridge. Although the traditional single-phase shift (SPS) technique has only one degree of freedom, it suffers from many drawbacks in terms of high current stress and reverse circulating power flow, which decrease the converter efficiency. On the other hand, increasing the number of phase-shift angles can enhance the system performance but also increase the control complexity. Thus, a comparative analysis between the proposed modulation technique and the traditional SPS was conducted; the new method showed better performance in terms of current stress reduction, along with implementation simplicity.

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Section: Introductionmentioning

confidence: 99%

Current stress minimization for isolated dual active bridge DC–DC converter

Rashwan

Ali

Senjyu

2022

Sci Rep

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“…The stepped up or down DC voltage is the purpose of power converter, even though using a transformer are commonly used in AC voltage. A conventional power converter still an option in industry such as industry of battery charger, uninterrupted power supplies, and other energy conversion systems [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Application of direct MRAC in PI controller for DC-DC boost converter

Ardhenta¹,

Subroto²

2020

IJPEDS

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<p>Almost all electronic components require a DC power supply at present days. The needs of DC power supplies from low voltage scales, medium voltages such as generators, to high voltage scales for high voltage electricity transmission. The improvement of PI controller performances is presented in this paper. The adaptation gains improve transient response of DC-DC Boost Converter several operating conditions. Massachusetts Institute of Technology (MIT) rule is applied as an adaptive mechanism to determine the optimal control parameters in some conditions. The used adaptive control technique is Direct Model Reference Adaptive Control (MRAC), this method as able to control system in some various input voltage. The proposed method has a stable response and able to reach the model reference smoothly. However, the response of the system has instantaneously overshoot and follows the response back of model reference. The responses of proposed controller have short period of rise time, settling time, and overshoot.</p>

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“…This phenomenon consists of the oscillation of the control law at a frequency and with amplitude capable of damaging the actuators [26]. In order to reduce the chattering, boundary layer methods (BL) and higher order SMC approaches (HO-SMC) are usually adopted by many researchers [27][28][29][30]. However, these methods have a major disadvantage that limits their performance which consists in the fact that they require the knowledge of the upper bounds of the different kinds of uncertainties and disturbances that affect the system dynamics.…”

Section: Introductionmentioning

confidence: 99%

A robust type-2 fuzzy sliding mode controller for disturbed MIMO nonlinear systems with unknown dynamics

et al. 2018

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In this paper, in order to achieve the best tracking control of a class of multi-input multi-output (MIMO) nonlinear systems with unknown dynamics and unknown disturbances, a new robust adaptive interval type-2 fuzzy sliding mode control law (AIT2-FSMCL) has been proposed. Based on developing interval type-2 fuzzy local models for some operating points of the controlled system, an interval type-2 fuzzy logic system (IT2-FLS) has been designed to better estimate the unknown nonlinear dynamics of the studied system. Then, to enhance the tracking control performance and ensure the system robustness in the presence of approximation errors, parameter variations, un-modelled dynamics and external disturbances, a new AIT2-fuzzy sliding mode system (AIT2-FSMS), has been introduced. In order to avoid the chattering phenomenon while keeping the system performance, the AIT2-FSMS uses three AIT2-fuzzy logic systems (AIT2-FLSs) to estimate the optimal gains of the AIT2-FSMCL. The adaptation laws have been derived using the Lyapunov stability approach. The mathematical proof shows that the closed-loop system with the proposed control approach is globally asymptotically stable. Finally, the proposed design method is applied to a two-link robot arm to validate the effectiveness of the proposed control approach.

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Fixed-boundary-layer Sliding-mode and Variable Switching Frequency Control for a Bidirectional DC–DC Converter in Hybrid Energy Storage System

Cited by 10 publications

References 30 publications

Current stress minimization for isolated dual active bridge DC–DC converter

Current stress minimization for isolated dual active bridge DC–DC converter

Application of direct MRAC in PI controller for DC-DC boost converter

A robust type-2 fuzzy sliding mode controller for disturbed MIMO nonlinear systems with unknown dynamics

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