A Wide Bandgap Device-Based Isolated Quasi-Switched-Capacitor DC/DC Converter

Zhang, Xuan; Yao, Chengcheng; Liu, Cong; Fu, Lixing; Guo, Feng; Wang, Jin

doi:10.1109/tpel.2013.2287501

Cited by 64 publications

(21 citation statements)

References 20 publications

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“…Recently, Zhang et al [6] developed an isolated quasiswitched-capacitor DC/DC converter, which obtains reduced number of switches and voltage stresses (Fig. 2c).…”

Section: A Primary Part Topology Selectionmentioning

confidence: 99%

“…The primary side of the converter needs three switches instead of four in the full bridge. In the meanwhile, the voltage stress on HV-side switching devices is 2/3 V in and that across the transformer is 1/3 V in , which results in reduced transformer turns ratio as well [6]. However, this converter requires two capacitors to be charged and discharged by the primary current.…”

Section: A Primary Part Topology Selectionmentioning

confidence: 99%

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A topological evaluation of isolated DC/DC converters for Auxiliary Power Modules in Electrified Vehicle applications

Hou

Magne

Bilgin

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper presents a comparative evaluation of the suitable isolated DC-DC converters for the Auxiliary Power Module (APM) in Electrified Vehicle applications. The basic Single-Input-Single-Output (SISO) DC-DC converter topologies are reviewed. Different configurations of Single-Input-MultipleOutput (SIMO) and Multiple-Input-Multiple-Output (MIMO) topologies and their control strategies are presented. By applying full bridge current doubler as the base topology, different multiple topology configurations are compared from a MOSFET switch efficiency drop and cost aspect. Results of the study show that the Input-Series-Output-Parallel (ISOP) topology configuration presents better performance for the APM application in terms of switch efficiency and cost.

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“…Recently, Zhang et al [6] developed an isolated quasiswitched-capacitor DC/DC converter, which obtains reduced number of switches and voltage stresses (Fig. 2c).…”

Section: A Primary Part Topology Selectionmentioning

confidence: 99%

Section: A Primary Part Topology Selectionmentioning

confidence: 99%

A topological evaluation of isolated DC/DC converters for Auxiliary Power Modules in Electrified Vehicle applications

Hou

Magne

Bilgin

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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show abstract

“…1 [8]. The circuit is derived by applying the traditional voltage tripler ac/dc circuit in a reverse power-flow direction, and replacing the 3 diodes with 3 controllable switches.…”

Section: The Qsc Circuitmentioning

confidence: 99%

“…This paper presents a family of isolated Quasi-SwitchedCapacitor (QSC) dc/dc converters. These converters employ a bidirectional QSC circuit which integrates a transformer into the SC circuit [8]. Comparing with half-bridge and full-bridge converters, the QSC converters feature reduced voltage stress on the switches and a reduced transformer turns ratio.…”

Section: Introductionmentioning

confidence: 99%

A family of Quasi-Switched-Capacitor converters

Zhang

Yao

Guo

et al. 2014

2014 IEEE Conference and Expo Transportation Electrification Asia-Pacific (ITEC Asia-Pacific)

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This paper presents a family of Quasi-SwitchedCapacitor (QSC) dc/dc converters which employs a bidirectional QSC circuit. Comparing with half-bridge and full-bridge converters, the QSC converters feature reduced voltage stress on the switches and a reduced transformer turns ratio. In addition, they also feature bidirectional power flow, galvanic isolation, soft switching, resonant operation, and multi-port capability. For demonstration, two prototypes together with their experimental results are presented, including: 1) a 1-kW bidirectional QSC auxiliary power supply utilizing SiC MOSFETs for automotive application. This prototype is also evaluated with the dual-input configuration to combine the Photovoltaic (PV) system with Energy Storage System (ESS) which can be used vehicle batteries; 2) a 90-W QSC resonant converter based on eGaN FETs for ac/dc power adapters.

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“…They suffer from large switching losses due to the hard switching operation. In order to solve this problem, some active and/or passive components are inserted to achieve zero-voltage-switching (ZVS) or zero-current-switching (ZCS) performance [12,[23][24][25][26]. However, the additional active switches may increase the control complexity and the passive components may bring extra voltage or current stress on the power switches.…”

Section: Introductionmentioning

confidence: 99%

Non-isolated stacked bidirectional soft-switching DC-DC converter with PWM plus phase-shift control scheme

Jiang²,

Yang

et al. 2017

J. Mod. Power Syst. Clean Energy

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In this paper, a non-isolated stacked bidirectional DC-DC converter with zero-voltage-switching (ZVS) is introduced for the high step-up/step-down conversion systems. The extremely narrow turn-on and/or turn-off duty cycle existing in the conventional bidirectional buck-boost converters can be extended due to the stacked module configuration for large voltage conversion ratio applications. Furthermore, the switch voltage stress is halved because of the series connection of half bridge modules. The PWM plus phase-shift control strategy is employed, where the duty cycle is adopted to regulate the voltages between the input and output sides and the phaseshift angle is applied to achieve the power flow regulation.This decoupled control scheme can not only realize seamless bidirectional transition operation, but also achieve adaptive voltage balance for the power switches. In addition, ZVS soft-switching operation for all active switches is realized to minimize the switching losses. Finally, a prototype of 1 kW operating at 100 kHz is built and tested to demonstrate the effectiveness of the proposed converter and the control strategy.

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A Wide Bandgap Device-Based Isolated Quasi-Switched-Capacitor DC/DC Converter

Cited by 64 publications

References 20 publications

A topological evaluation of isolated DC/DC converters for Auxiliary Power Modules in Electrified Vehicle applications

A topological evaluation of isolated DC/DC converters for Auxiliary Power Modules in Electrified Vehicle applications

A family of Quasi-Switched-Capacitor converters

Non-isolated stacked bidirectional soft-switching DC-DC converter with PWM plus phase-shift control scheme

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