A Nonisolated Bidirectional ZVS-PWM Active Clamped DC–DC Converter

Das, Pritam; Laan, B.; Mousavi, Seyedali; Moschopoulos, Gerry

doi:10.1109/tpel.2008.2006897

Cited by 117 publications

(46 citation statements)

References 14 publications

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“…From Figure 2a, it can be found that when t = t 3 , the inductor current is equal to´I o , as described in Equation (6). From Equation (6), the relationship between t 1 and t 2 can be obtained as Equation (7).…”

Section: The Proposed Adaptive Phase-shift Control Methodsmentioning

confidence: 99%

“…For non-isolated bidirectional DC-DC converters, soft switching techniques are typically employed to achieve high efficiency. A common way to accomplish soft switching is to employ an auxiliary circuit including auxiliary switches, inductors and/or capacitors [6][7][8][9]. Using this method, zero voltage switching (ZVS) or zero current switching (ZCS) can be attained by resonance between inductors and capacitors.…”

Section: Introductionmentioning

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%

Section: Introductionmentioning

confidence: 99%

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

Liu

et al. 2016

Energies

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“…One is based on a constant switching frequency with a variable duty cycle, while the other is based on a constant duty cycle and a variable switching frequency. Power converters with constant switching frequency and zero voltage switching (ZVS) techniques, such as active clamped ZVS converters [1]- [5], asymmetric half-bridge converters [6]- [7] and phase-shift pulse-width modulation (PWM) converters [8]- [9], have been proposed for many years to reduce the switching losses of MOSFETs and to increase circuit efficiency. However, the ZVS effect of these techniques is limited to specific load conditions.…”

Section: Introductionmentioning

confidence: 99%

Interleaved ZVS Resonant Converter with a Parallel-Series Connection

Lin¹,

Shen²

2012

Journal of Power Electronics

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This paper presents an interleaved resonant converter with a parallel-series transformer connection in order to achieve ripple current reduction at the output capacitor, zero voltage turn-on for the active switches, zero current turn-off for the rectifier diodes, less voltage stress on the rectifier diodes, and less current stress on the transformer primary windings. The primary windings of the two transformers are connected in parallel in order to share the input current and to reduce the root-mean-square (rms) current on the primary windings. The secondary windings of the two transformers are connected in series in order to ensure that the transformer primary currents are balanced. A full-wave diode rectifier is used at the output side to clamp the voltage stress of the rectifier diode at the output voltage. Two circuit modules are operated with the interleaved PWM scheme so that the input and output ripple currents are reduced. Based on the resonant behavior, all of the active switches are turned on under zero voltage switching (ZVS), and the rectifier diodes are turned off under zero current switching (ZCS) if the operating switching frequency is less than the series resonant frequency. Finally, experiments with a 1kW prototype are described to verify the effectiveness of the proposed converter.

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“…Thus, a bidirectional DC-DC converter which allows transfer power between two DC sources become an important topic of power electronics. The bidirectional DC-DC converter is categorized into an isolated converter [4]- [6] and a non-isolated converter [7], [8]. The demands of bidirectional DC-DC converter are smaller size, lighter weight and higher efficiency etc..…”

Section: Introductionmentioning

confidence: 99%

“…In the case of conventional bidirectional DC-DC converter, the main switches operate under hard switching [11], [15][16] condition in boost mode and buck mode. Since this switching loss is one of serious dissipation, it is able to be caused to drop the efficiency of system.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Novel Soft Switching Bidirectional DC-DC Converter

Eom¹,

Kim²,

Kim³

et al. 2012

Journal of Power Electronics

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In this paper, a novel bidirectional DC-DC converter employing soft switching technique was proposed. Compare to conventional bidirectional converters, the main switches of proposed converter are operated without switching losses. Moreover, auxiliary switches are used, and the switches are operated under zero voltage switching (ZVS) and zero current switching (ZCS) condition. To verify the validity of the proposed converter, mode analysis, design procedure, simulation and experimental results are presented.

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A Nonisolated Bidirectional ZVS-PWM Active Clamped DC–DC Converter

Cited by 117 publications

References 14 publications

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

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

Interleaved ZVS Resonant Converter with a Parallel-Series Connection

Analysis of a Novel Soft Switching Bidirectional DC-DC Converter

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