Switched linear control of interleaved boost converters

Mojallizadeh, Mohammad Rasool; Badamchizadeh, Mohammad Ali

doi:10.1016/j.ijepes.2019.02.030

Cited by 15 publications

(9 citation statements)

References 31 publications

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“…Such a charger/discharger has been extensively used due to it provides a positive compromise between simplicity and performance. 3,4,18 In particular, the work reported in ref. 3,4,18 In particular, the work reported in ref.…”

Section: Discharger Circuitmentioning

confidence: 99%

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Charger/discharger DC/DC converter with interleaved configuration for DC‐bus regulation and battery protection

Villegas-Ceballos

Serna-Garcés

Montoya

et al. 2019

Energy Science & Engineering

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Regulation of DC‐bus voltages is important for the stable operation of different applications, like microgrids and electric vehicles, and it is usually performed by charging/discharging (C/D) batteries. Such C/D system is formed by a power converter and a control system, and it is aimed at guaranteeing the system stability and extending the battery life. To extend the battery life, it is important to reduce the battery current ripples, which is usually performed with interleaved converters and nonlinear controllers; however, most of those controllers do not provide the design procedure nor guarantee the system stability. This paper proposes a nonlinear control strategy to regulate the voltage in a DC‐bus by C/D a battery through a two‐branch interleaved Boost converter. The proposed control strategy is formed by two sliding mode controllers (SMCs), where the first one regulates the DC‐bus voltage by acting on the first converter branch and the second SMC controls the current in the second branch. The reference of the second SMC is generated from the delayed current of the first branch, in order to coordinate the controllers and to reduce the ripples in the battery current. The paper includes a procedure to design the two SMCs as well as simulation and experimental results to validate the proposed solution and to illustrate its performance. The results prove the system stability and its dynamic performance according to the design.

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Section: Discharger Circuitmentioning

confidence: 99%

“…16,17 Moreover, both linear controllers and SMCs have been designed to ensure a stable operation of the DC-bus voltage. 3,4,18 In particular, the work reported in ref. 19 proposes a SMC based on the battery current i b and the DC-bus voltage error, which provides a satisfactory voltage regulation with global stability.…”

Section: Discharger Circuitmentioning

confidence: 99%

Charger/discharger DC/DC converter with interleaved configuration for DC‐bus regulation and battery protection

Villegas-Ceballos

Serna-Garcés

Montoya

et al. 2019

Energy Science & Engineering

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“…Different types of this converter have been presented by researches. [18][19][20][21] Although a high ratio transformer is used in the conventional isolated converters such as full-bridge or fly-back converters, the non-isolated type of the converters is preferred based on their lower costs because they do not use the transformer and higher efficiency. [22][23][24] The current type isolated converters such as active clamp and full-bridge active clamp step-up converters can receive to higher efficiency and DC voltage gains.…”

Section: Introductionmentioning

confidence: 99%

Sliding mode controller‐based e‐bike charging station for photovoltaic applications

Huang

Feng

Ghaderi

2020

Int Trans Electr Energ Syst

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Summary PV‐based and wired type of the electrical bicycles (e‐bike) battery charging stations widely is spreading because of the resonant network limitations and low efficiency of the wireless mode for these stations. The generated voltage of many of the PV panels such as JIYANGYIN HR‐200 W‐24 V at the maximum power point is around 36VDC. So, a step‐down converter with a PID controller for Maximum Power Point Tracking (MPPT) of the PV panels is considered between PV panels and boost converter in order to decrease this voltage and enhance the current values for the load side. A sliding mode controller (SMC) equipped with a non‐isolated DC‐DC boost converter with reduced voltage stresses on the power switch is presented. The step‐up converter increases the voltage to the utility level of the e‐bike with around 360 Wh amount of energy. The main concerns about the converters are the efficiency, voltage, and current stresses, number of active or passive components in the converter topology and simplicity. In comparison with a conventional step‐up converter, the selected converter has a lower dynamic loss in the input inductor that can give a proper efficiency by considering its higher voltage gain. The average state‐space model for the SMC is used and the main advantage of the controller is its independency to the inductor current or the amount of the load. The proposed SMC is compared with PID and Fuzzy Logic Controller (FLC) methods and based on the results, the robustness, overshoot, and damping factor of the controller are at an acceptable and better level. All mathematical, simulation and comparison results are presented. A 720 Wh circuit has been implemented for charging all types of the Li‐Ion or Li‐Polymer batteries with 36VDC and 10 Ah specifications.

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“…In order to reduce both the input current ripple and the current stress on the switches, the interleaved technique is widely used in step-up DC-DC converters for PV systems [17][18][19][20][21]. Although such DC-DC converters offer high voltage gain, high efficiency, and reduced input current ripple, characteristics very attractive in PV applications, they have a large number of state variables (inductors and capacitors), many operation stages, some of them with time intervals given in terms of the average values of the states variables, and the coexistence of continuous and discontinuous state variables.…”

Section: Introductionmentioning

confidence: 99%

“…This method gives a continuous-time small-signal model, which can incorporate any number of harmonics to improve model accuracy. In [21], a three-phase interleaved boost converter was modeled, and a proposed switched linear control was implemented on it. In [23,24], dynamic models of the two-phase and six-phase interleaved boost converter were presented, respectively.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Control Design of the Symmetrical Interleaved Coupled-Inductor-Based Boost DC-DC Converter with Clamp Circuits

et al. 2019

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The symmetrical input-interleaved high-gain DC-DC converters are suitable candidates to be used as the first stage in PV microinverters and as parallel-connected power optimizers. In both applications, they are responsible for boosting the PV module DC voltage to a higher value and executing the maximum power point tracking control. However, such converters have many state variables, some of them discontinuous, and many operation stages, which make the development of the small-signal model a challenging task. Therefore, the aim of this paper is to propose a reduced-order improved average method (ROIAM) to model the family member of converters that present characteristics such as symmetry, interleaved operation, and discontinuous state-space variables. ROIAM is applied to model for the first time in the literature the symmetrically-interleaved coupled inductor-based boost (SICIBB), leading to a fourth-order mathematical model (reduced-order model). The complete eighth-order mathematical model is developed as well to prove that the reduced-order model represents correctly the dynamic behavior of the SICIBB converter by employing only four state variables, reducing considerably the effort of the modeling. Based on the reduced-order proposed model, a closed-loop control is designed and tested in a 300-W prototype of the SICIBB converter.

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Switched linear control of interleaved boost converters

Cited by 15 publications

References 31 publications

Charger/discharger DC/DC converter with interleaved configuration for DC‐bus regulation and battery protection

Charger/discharger DC/DC converter with interleaved configuration for DC‐bus regulation and battery protection

Sliding mode controller‐based e‐bike charging station for photovoltaic applications

Modeling and Control Design of the Symmetrical Interleaved Coupled-Inductor-Based Boost DC-DC Converter with Clamp Circuits

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