High Step-Up/Step-Down Soft-Switching Bidirectional DC–DC Converter With Coupled-Inductor and Voltage Matching Control for Energy Storage Systems

Summary This paper presents the design and development of an improved high‐gain buck‐boost converter (HGBBC) with optimized Type III controller suitable for power supplies in various electrical/electronics devices. The proposed HGBBC produces higher efficiency, exhibits better performance, is less bulky, and is compact in size. The voltage gain of the proposed HGBBC is the squared times the voltage gain of the conventional buck‐boost converter (BBC). The polarity of source and load (output) voltages are the same (ie, noninverting polarity). This added advantage of the proposed converter allows it to operate the positive load voltage variation in a wider range even with small variation of duty cycle ratio of the power switches. Therefore, its application may be advantageous for electronics/electrical equipment. The proposed converter's validity is determined by its steady‐state analysis, small‐signal analysis, and closed loop control operation. A closed‐loop controlled of HGBBC utilizing optimized Type III controller has been fabricated and tested in the laboratory. The comparative studies in terms of efficiency, dynamic response, and percentage ripple content of the proposed HGBBC and existing converters have been performed. From the results, it is seen that the proposed HGBBC is performed better than other existing quadratic types of BBCs.

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“…Therefore, the final steady-state voltage gain of HGBBC can be obtained by putting (7) into (9) and given in (10).…”

Section: Steady-state Voltage Gainmentioning

confidence: 99%

Closed‐loop control and performance analysis of a high‐gain buck‐boost converter with optimized Type III controller

Banerjee

Rana

Khuntia

2019

Int Trans Electr Energ Syst

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“…Due to the page limitations, the detailed design can be found in the related literature [40][41][42][43][44][45][46].…”

Section: Designing the Isolated Converter Transformermentioning

confidence: 99%

A Multifunctional Isolated and Non-Isolated Dual Mode Converter for Renewable Energy Conversion Applications

Wang

Gan

et al. 2017

Energies

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Abstract:In this paper, a multifunctional isolated and non-isolated dual-mode low-power converter was designed for renewable energy conversion applications such as photovoltaic power generation to achieve different operating modes under bi-directional electrical conversion. The proposed topology consists of a bidirectional non-isolated DC/DC circuit and an isolated converter with a high-frequency transformer, which merge the advantages of both the conventional isolated converter and non-isolated converter with the combination of the two converter technologies. Compared with traditional converters, the multifunctional converter can not only realize conventional bi-directional functions, but can also be applied for many different operation modes and meet the high output/input ratio demands with the two converter circuits operating together. A novel control algorithm was proposed to achieve the various functions of the proposed converter. An experimental platform based on the proposed circuit was established. Both the simulation and experimental results indicated that the proposed converter could provide isolated and non-isolated modes in different applications, which could meet different practical engineering requirements.

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“…In order to avoid the jitter, soft switching methods came into being [11,12]. In this paper, a soft switching among multiple models is realized by means of the dual adaptive control method.…”

Section: Introductionmentioning

confidence: 99%

Multi-Model Reliable Control for Variable Fault Systems under LQG Framework

et al. 2019

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The problem of reliable control for variable fault systems under linear quadratic Gaussian (LQG) framework is studied in this paper. Firstly, a cluster of models is used to cover the dynamic behaviors of different fault modes of a system and, for each model, LQG control is implemented. By using the a posteriori probability of model innovation as the weight information, a multi-model reliable control (MMRC) is proposed. Secondly, it is proved that MMRC can enable the controller to learn the real operating mode of the system. When the controller is in a deadlock state, a deadlock avoidance strategy is given and its convergence of the a posteriori probability is proved. Finally, the validity of MMRC is verified by an example simulation of the lateral-directional control system of an aircraft. Simulation results show that MMRC guarantees an acceptable performance of the closed-loop system. In addition, since the controller fuses the control law of each model according to the weight information, when the system model is switched, the controller implements a soft switching, which avoids the jitter caused by frequent hard switching to the system.

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High Step-Up/Step-Down Soft-Switching Bidirectional DC–DC Converter With Coupled-Inductor and Voltage Matching Control for Energy Storage Systems

Cited by 153 publications

References 22 publications

Closed‐loop control and performance analysis of a high‐gain buck‐boost converter with optimized Type III controller

Closed‐loop control and performance analysis of a high‐gain buck‐boost converter with optimized Type III controller

A Multifunctional Isolated and Non-Isolated Dual Mode Converter for Renewable Energy Conversion Applications

Multi-Model Reliable Control for Variable Fault Systems under LQG Framework

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