Proceedings ArticleDOI
Analysis, design and a comparative study of ZVS-ZVT buck topologies for battery charger application
Greeshma K. Viswanathan,Rose Mary Simon Palackal,Kavya Gunda,D. Elangovan,R. Saravanakumar +4 more
- pp 241-248
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TLDR
In this article, the authors presented a highly efficient and low-stress battery charger with a resonant zero-voltage transition soft-switching theory (ZVT), which reduces drawbacks associated with high voltage and high current stresses caused by the resonance of traditional resonant circuits.Abstract:
This paper presents a highly efficient and low-stress battery charger with a resonant zero-voltage-transition soft-switching theory (ZVT). The proposed converter reduces drawbacks associated with high voltage and high current stresses caused by the resonance of traditional resonant circuits. The proposed topology solves narrow duty cycle and hard switching problems of conventional buck converter in lower output voltage and higher output current. The battery charger meets the requirement that all circuit components must operate with zero-voltage switching. The proposed converter simulated in MATLAB software and simulation results and waveforms for the proposed converter are presented The results are obtained in such a way that the proposed ZVT buck converter is compared with ZVS resonant buck converter. Similarly under the same operating conditions, the switching losses are comparedread more
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Journal ArticleDOI
Novel Bidirectional Single-phase Single-Stage Isolated AC–DC Converter With PFC for Charging of Electric Vehicles
TL;DR: In this paper, the authors proposed a bidirectional single-phase single-stage ac-dc converter for electric vehicle (EV) charging application, which achieves zero current switching of primary side switches and zero current turn-ON for secondary side devices throughout the operation without any additional components.
References
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Soft-switching techniques in PWM converters
Guichao Hua,Fred C. Lee +1 more
TL;DR: Three classes of zero-voltage soft-switching PWM converters and their merits and limitations are assessed, and experimental results of several prototype of converters are presented to illustrate each class.
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Resonant converter controlled by variable capacitance devices
TL;DR: In this paper, a variable capacitance device is proposed for output voltage regulation of resonant converters, which can be applied to the Schwarz circuit and buck-type current-resonant converter with a resonant switch.
Journal ArticleDOI
Novel design methodology and comparative analysis for ZVT PWM converters with resonant auxiliary circuit
TL;DR: In this paper, a similarity transformation is applied to the three-state-variable system in such a way that the whole system dynamics can be represented in a two-dimensional state space.
Journal ArticleDOI
Zero-Voltage-Transition Control for a Class of Resonant Converters
Ilse Cervantes,S. Perez-Teniers +1 more
TL;DR: A variable pulsewidth control scheme is proposed that ensures soft-switching conditions and reduces conduction losses and has the feature of significant improvement of efficiency and wider voltage conversion ratio.
Proceedings ArticleDOI
A novel ZVS buck converter topology for VRM applications
TL;DR: The paper presents a novel ZVS buck converter topology that solves narrow duty cycle and hard switching problems of conventional buck converter in lower output voltage and higher output current.