A Family of Isolated Buck-Boost Converters Based on Semiactive Rectifiers for High-Output Voltage Applications

Lu, Yu; Wu, Hongfei; Sun, Kai; Xing, Yan

doi:10.1109/tpel.2015.2501405

Cited by 54 publications

(17 citation statements)

References 25 publications

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“…Although this converter can generate boost, buck, and inverted outputs simultaneously, it is a unidirectional converter. Yangjun Lu et al uses semi‐active rectifiers to develop a set of isolated dc‐dc buck‐boost converter. Multi‐input multi‐output (MIMO) dc‐dc converter topology uses magnetic coupling which increases the overall system size and cost.…”

Section: Introductionmentioning

confidence: 99%

Cost‐efficient nonisolated three‐port DC‐DC converter for EV/HEV applications with energy storage

Suresh

Chellammal

Bharatiraja

et al. 2019

Int Trans Electr Energ Syst

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Summary Electric vehicle (EV) systems are the promising future transportation system as they play a key role in reducing the atmospheric carbon emission, and it becomes the focal point of research and development in the current epoch. This paper presents the design and development of three‐port dc‐dc buck‐boost converter (TPB2C) applicable for EV. The main feature of the proposed converter is its ability to handle diversified energy sources of different voltage and current characteristics with high output gain. The designed single stage converter with reduced components count can be operated in buck, boost, and buck‐boost mode with partial bidirectional power flow capability. In addition, the TPB2C converter could provide buck and boost output simultaneously unlike its counterparts which can output either buck or boost output. In buck mode, the suggested topology charges the battery and thereby eliminates a separate battery management system. Roof top photovoltaic panel and battery are the two input sources for the suggested converter. A small‐signal model of the converter is developed using state‐space approach, and the steady‐state performance of the converter is analyzed comprehensively. The device level simulations carried out in MATLAB‐Simulink and the experimental laboratory prototype model are validated using a dSPACE1104 real‐time digital controller.

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Section: Introductionmentioning

confidence: 99%

Cost‐efficient nonisolated three‐port DC‐DC converter for EV/HEV applications with energy storage

Suresh

Chellammal

Bharatiraja

et al. 2019

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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“…The requirements of wide input voltage and load regulation range make the design of the dc-dc converter very challenging, especially from the point of view of weighted efficiency, voltage and current stresses of the components. To satisfy this demand, different novel topologies of galvanically isolated step-up dc-dc converters have recently been investigated, which range from the singleswitch magnetically integrated high-gain dc-dc converters [6] to more complex isolated buck-boost dc-dc converters (IBBCs) [7]. The IBBCs can be categorized either as the multistage converters, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…The IBBCs can be categorized either as the multistage converters, i.e. when the buck and boost functions are performed by different switching cells [7]- [9], or as the single-stage ones, where the buck-boost functionality is realized by a single switching cell [10]- [11]. To enhance the performance of the single-stage IBBC further, the topology morphing control could be implemented, which, depending on the operating conditions of the converter, will reconfigure the switching cell to achieve better tradeoff between the power losses in the active switches and the resulting dc gain of the converter [12].…”

Section: Introductionmentioning

confidence: 99%

Boost half-bridge DC-DC converter with reconfigurable rectifier for ultra-wide input voltage range applications

Vinnikov

Chub

Liivik

et al. 2018

2018 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper introduces a novel galvanically isolated boost half-bridge dc-dc converter intended for modern power electronic applications where ultra-wide input voltage regulation range is needed. A reconfigurable output rectifier stage performs a transition between the voltage doubler and the full-bridge diode rectifiers and, by this means, extends the regulation range significantly. The converter features a low number of components and resonant soft switching of semiconductors, which result in high power conversion efficiency over a wide input voltage and load range. The paper presents the operating principle, prototype design and experimental study of the proposed converter.

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“…In these applications, the power supply's voltage falls as the current rises, leading to a concave operation area (shown in Figure 2), which is smaller than the rectangular area. Most DC/DC converters are a linear system in which the output voltage or current is decided by control signals like duty cycle or phase shift, and are not influenced by the loads [7][8][9]. Therefore, the operation area of these converters is similar to a rectangle.…”

Section: Introductionmentioning

confidence: 99%

“…When the switching frequency is fixed, the gain of the converter could fall as the loads increase, which means the output voltage of the resonant converter could fall as the current rises, similar to the operational area in Figure 2 If the resonant converter's operation area is designed to fit the operation area of the special applications, higher power density and efficiency of the resonant converters can be achieved. Most DC/DC converters are a linear system in which the output voltage or current is decided by control signals like duty cycle or phase shift, and are not influenced by the loads [7][8][9]. Therefore, the operation area of these converters is similar to a rectangle.…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis and Trigger Control of LLC Resonant Converter for a Wide Operational Range

et al. 2017

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Abstract:The gain of a LLC resonant converter can vary with the loads that can be used to improve the efficiency and power density for some special applications, where the maximum gain does not apply at the heaviest loads. However, nonlinear gain characteristics can make the converters unstable during a major disturbance. In this paper, the stability of an LLC resonant converter during a major disturbance is studied and a trigger control scheme is proposed to improve the converter's stability by extending the converter's operational range. Through in-depth analysis of the gain curve of the LLC resonant converter, we find that the switching frequency range is one of the key factors determining the system's stability performance. The same result is also obtained from a mathematical point of view by utilizing the mixed potential function method. Then a trigger control method is proposed to make the LLC resonant converter stable even during a major disturbance, which can be used to extend the converter's operational range. Finally, experimental results are given to verify the analysis and proposed control scheme.

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A Family of Isolated Buck-Boost Converters Based on Semiactive Rectifiers for High-Output Voltage Applications

Cited by 54 publications

References 25 publications

Cost‐efficient nonisolated three‐port DC‐DC converter for EV/HEV applications with energy storage

Cost‐efficient nonisolated three‐port DC‐DC converter for EV/HEV applications with energy storage

Boost half-bridge DC-DC converter with reconfigurable rectifier for ultra-wide input voltage range applications

Stability Analysis and Trigger Control of LLC Resonant Converter for a Wide Operational Range

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