PWM Resonant Single-Switch Isolated Converter

Park, Ki-Bum; Kim, Chong-Eun; Moon, Gun-Woo; Youn, Myung-Joong

doi:10.1109/tpel.2009.2017264

Cited by 34 publications

(9 citation statements)

References 17 publications

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“…In general, the SSQR converter is composed of a switch Q 1 , a transformer T 1 , a resonant capacitor C r , a resistive-capacitor-diode (RCD) snubber, two diodes D 1 and D 2 , and an output filter C O . Figure 3a shows the representative schematic of a step-down (buck) SSQR converter [26]. Thanks to the quasi-resonant operation, the SSQR converter reduces the turn-on and turn-off loss from Q 1 and alleviates the reverse-recovery losses from D 1 and D 2 .…”

Section: Step-up Single-switch Quasi-resonant Converter For Cpt Systemsmentioning

confidence: 99%

“…The RCD snubber is used on the primary side to suppress the high voltage spike of Q 1 caused by the leakage inductance of T 1 and the high input voltage V I N at the switch turn-off transition. Especially in [26], two expensive multi-layer ceramic capacitor (MLCC) resonant capacitors with high capacitance of 22 µF are used for C r in the secondary side, in order for low f r . Since the voltage stress of D 1 and D 2 is clamped to the output voltage V O , the SSQR converter is especially good at step-up (boost) applications.…”

Section: Step-up Single-switch Quasi-resonant Converter For Cpt Systemsmentioning

confidence: 99%

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A High-Efficient Low-Cost Converter for Capacitive Wireless Power Transfer Systems

2017

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Growth of the Internet of Things (IoT) spurs need for new ways of delivering power. Wireless power transfer (WPT) has come into the spotlight from both academia and industry as a promising way to power the IoT devices. As one of the well-known WPT techniques, the capacitive power transfer (CPT) has the merit of low electromagnetic radiation and amenability of combined power and data transfer over a capacitive interface. However, applying the CPT to the IoT devices is still challenging in reality. One of the major issues is due to the small capacitance of the capacitive interface, which results in low efficiency of the power transfer. To tackle this problem, we present a new step-up single-switch quasi-resonant (SSQR) converter for the CPT system. To enhance the CPT efficiency, the proposed converter is designed to operate at low frequency and drive small current into the capacitive interfaces. In addition, by eliminating resistor-capacitor-diode (RCD) snubber in the converter, we reduce the implementation cost of the CPT system. Based on intensive experimental work with a CPT system prototype that supports maximum 50 W (100 V/0.5 A) power transfer, we demonstrate the functional correctness of the converter that achieves up to 93% efficiency.

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Section: Step-up Single-switch Quasi-resonant Converter For Cpt Systemsmentioning

confidence: 99%

Section: Step-up Single-switch Quasi-resonant Converter For Cpt Systemsmentioning

confidence: 99%

A High-Efficient Low-Cost Converter for Capacitive Wireless Power Transfer Systems

2017

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“…They are converter with more number of switches and converter with bulky transformer. To overcome the reverse recovery problem of the rectifier diodes the Leakage inductors of the transformer and resonant capacitors help to achieve ZCS [10]. However, these transformers and switches increases losses in the circuit and reduce the efficiency of the converter.…”

Section: Revision Of Resonant Converter Topologiesmentioning

confidence: 99%

Voltage mode control of soft-switched single switch resonant converter

Tony¹,

Saritha²

2015

2015 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2015]

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The voltage mode control of soft-switched single switch resonant converter is introduced in this paper. The resonant converter is mainly used due to their small size, simple construction, and easy to apply soft-switching techniques. The switching losses of converter are reduced by soft-switching technique on the switch and the usage of single switch. A closed loop control is provided here to achieve the output voltage stabilization for the line and load changes. Simulation is done using PSIM and the results shows voltage stabilization and soft-switching for the switch and diode is attained.

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“…The transformer secondary side resonance technique is proposed in [22]- [29] to achieve zero current switching (ZCS) for the diode. The ZCS for the output diode is achieved with the resonant tank in the secondary side, whereas the ZVS for switches is realized through the active clamp technique [22]- [28].…”

Section: Introductionmentioning

confidence: 99%

“…The ZCS for the output diode is achieved with the resonant tank in the secondary side, whereas the ZVS for switches is realized through the active clamp technique [22]- [28]. However, such resonant technique results in an increased current stress of power switches.…”

Section: Introductionmentioning

confidence: 99%

Asymmetrical Pulse-Width-Modulated Full-Bridge Secondary Dual Resonance DC-DC Converter

Chen¹,

Zhou²,

Xu³

et al. 2014

Journal of Power Electronics

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A full-bridge secondary dual-resonant DC-DC converter using the asymmetrical pulse-width modulated (APWM) strategy is proposed in this paper. The proposed converter achieves zero-voltage switching for the power switches and zero-current switching for the rectifier diodes in the whole load range without the help of any auxiliary circuit. Given the use of the APWM strategy, a circulating current that exists in a traditional phase-shift full-bridge converter is eliminated. The voltage stress of secondary rectifier diodes in the proposed converter is also clamped to the output voltage. Thus, the existing voltage oscillation of diodes in traditional PSFB converters is eliminated. This paper presents the circuit configuration of the proposed converter and analyzes its operating principle. Experimental results of a 1 kW 385 V/48 V prototype are presented to verify the analysis results of the proposed converter.

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PWM Resonant Single-Switch Isolated Converter

Cited by 34 publications

References 17 publications

A High-Efficient Low-Cost Converter for Capacitive Wireless Power Transfer Systems

A High-Efficient Low-Cost Converter for Capacitive Wireless Power Transfer Systems

Voltage mode control of soft-switched single switch resonant converter

Asymmetrical Pulse-Width-Modulated Full-Bridge Secondary Dual Resonance DC-DC Converter

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