Analysis and Design of a Nonisolated Bidirectional ZVS-PWM DC–DC Converter With Coupled Inductors

Das, Pritam; Mousavi, Seyedali; Moschopoulos, Gerry

doi:10.1109/tpel.2010.2049863

Cited by 116 publications

(102 citation statements)

References 24 publications

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“….5q (10) According to Equations (9) and (10), it can be noticed that the phase-shift angle varies with the length of t 3 under different load conditions. Furthermore, the phase-shift angle is related to the maximum output power of the universal bidirectional DC-DC converter.…”

Section: The Proposed Adaptive Phase-shift Control Methodsmentioning

confidence: 99%

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Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

Liu

et al. 2016

Energies

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Abstract:In this paper, first the operating principles of a non-isolated universal bidirectional DC-DC converter are studied and analyzed. The presented power converter is capable of operating in all power transferring directions in buck/boost modes. Zero voltage switching can be achieved for all the power switches through proper modulation strategy design, therefore, the presented converter can achieve high efficiency. To further improve the efficiency, the relationship between the phase-shift angle and the overall system efficiency is analyzed in detail, an adaptive phase-shift (APS) control method which determines the phase-shift value between gating signals according to the load level is then proposed. As the modulation strategy is a software-based solution, there is no requirement for additional circuits, therefore, it can be implemented easily and instability and noise susceptibility problems can be reduced. To validate the correctness and the effectiveness of the proposed method, a 300 W prototyping circuit is implemented and tested. A low cost dsPIC33FJ16GS502 digital signal controller is adopted in this paper to realize the power flow control, DC-bus voltage regulation and APS control. According to the experimental results, a 12.2% efficiency improvement at light load and 4.0% efficiency improvement at half load can be achieved.

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Section: The Proposed Adaptive Phase-shift Control Methodsmentioning

confidence: 99%

“…Nonetheless, these techniques require additional components, which will result in higher costs and complexity. Another approach to realize soft switching is to adopt coupled inductors [10][11][12][13][14][15][16][17][18][19]. By adding an additional winding, it can form another power flow path to achieve ZVS or ZCS.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

Liu

et al. 2016

Energies

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“…BDCs can be categorized into isolated converters [4]- [7] and non-isolated converters [8]- [10]. An advantage of an isolated converter is its electrical isolation.…”

Section: Introductionmentioning

confidence: 99%

Model-based Optimal Control Algorithm for the Clamp Switch of Zero-Voltage Switching DC-DC Converter

Ahn¹,

Park²,

Lee³

2017

Journal of Power Electronics

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This paper proposes a model-based optimal control algorithm for the clamp switch of a zero-voltage switching (ZVS) bidirectional DC-DC converter. The bidirectional DC-DC converter (BDC) can accomplish the ZVS operation using the clamp switch. The minimum current for the ZVS operation is maintained, and the inductor current is separated from the input and output voltages by the clamp switch in this topology. The clamp switch can decrease the inductor current ripple, switching loss, and conduction loss of the system. Therefore, the optimal control of the clamp switch is significant to improve the efficiency of the system. This paper proposes a model-based optimal control algorithm using phase shift in a micro-controller unit. The proposed control algorithm is demonstrated by the results of PSIM simulations and an experiment conducted in a 1-kW ZVS BDC system.

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“…However, in many applications the high gain requirements are such that the conventional DC-DC converter operates with extremely duty-cycle operation which may result in reverse-recovery problem and causes not only low efficiency but also creates electromagnetic interference (EMI) problems [13]. To extend the voltage gain ratio, several DC-DC converters with magnetic coupling techniques have been proposed, notwithstanding some disadvantages such as pulsating bus voltage remain and complex control schemes [26,27].…”

Section: Introductionmentioning

confidence: 99%

Bidirectional boost/buck quadratic converter for distributed generation systems with electrochemical storage systems

Pires

Foito

Cordeiro

2016

2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)

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Abstract-The increasing number of distributed generation systems using renewable and non-conventional energy sources show the trend of future generation systems. Most of these systems require power electronic converters as an interface between the DC voltage buses and electrochemical storage systems. Such storage systems, like batteries or supercapacitors, usually need bidirectional DC-DC converters to allow their charge or discharge according with necessary operation conditions. In this paper, a non-isolated bidirectional Buck-Boost converter with high voltage gain for electrochemical storage devices used in distributed generation systems is presented. To achieve high voltage gain ratios, the proposed topology presents quadratic characteristics in both step-down (Buck) and step-up (Boost) operation modes. In addition to the wide conversion range, it presents continuous input and output current, reduced charging/discharging ripple and simple control circuitry. All these features allow the energy exchange smoothly and continuously resulting in a longer durability of storage devices. The principle of the operation of the proposed converter in both operation modes, as well as their theoretical analysis will be discussed. The performance of this bidirectional power converter is confirmed through simulation and experimental results.

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Analysis and Design of a Nonisolated Bidirectional ZVS-PWM DC–DC Converter With Coupled Inductors

Cited by 116 publications

References 24 publications

Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

Model-based Optimal Control Algorithm for the Clamp Switch of Zero-Voltage Switching DC-DC Converter

Bidirectional boost/buck quadratic converter for distributed generation systems with electrochemical storage systems

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