Results 21 to 30 of about 11,901 (212)
GMS Zeitschrift für Medizinische Ausbildung, 2010 [english] Since 2004 German universities have been able to use a selection procedure to admit up to 60 percent of new students. In 2005, the Carl Gustav Carus Faculty of Medicine at Dresden introduced a new admission procedure.
Koch, Thea +4 more
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Load‐independent inverse class‐E ZVS inverter and its application to wireless power transfer systems
IET Power Electronics, 2022 This paper proposes a load‐independent inverse class‐E zero‐voltage switching (ZVS) inverter. The proposed inverter achieves the constant output current and the ZVS at any load resistance without any control.
Ayano Komanaka +4 more
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Hybrid ZVS Converter with a Wide ZVS Range and a Low Circulating Current [PDF]
Journal of Power Electronics, 2015 This paper presents a new hybrid soft switching dc-dc converter with a low circulating current and high circuit efficiency. The proposed hybrid converter includes two sub-converters sharing two power switches. One is a three-level PWM converter and the other is a LLC converter.
Bor-Ren Lin, Jia-Sheng Chen
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Modeling and Control of Inverter Zero-Voltage-Switching for Inductive Power Transfer System
IEEE Access, 2019 It's very important to maintain the inverter zero-voltage-switching(ZVS) for inductive power transfer (IPT) system, especially for those high power applications. The ZVS condition can be obtained via regulating the inverter operating frequency of the IPT
Jiangtao Liu +3 more
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Journal of Modern Power Systems and Clean Energy, 2019 Power electronic conversion plays an important role in flexible AC or DC transmission and distribution systems, integration of renewable energy resources, and energy storage systems to enhance efficiency, controllability, stability, and reliability of ...
Keyan Shi +3 more
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IEEE Open Journal of Power Electronics, 2020 A general PWM method for soft-switching three-phase power converters-Edge Aligned PWM (EA-PWM) is proposed. It aligns all the high loss commutation instants of the converter bridges in a switching cycle at the same instant so that all the switches of the
Keyan Shi, Jinyi Deng, Dehong Xu
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Analysis on boundary conditions of soft switching for DC electric spring with parallel topology
IET Power Electronics, 2021 The concept of DC electric spring (DCES) has been introduced some years ago to solve the voltage stabilisation issue caused by the high penetration of intermittent renewable energy sources (RESs) into DC power systems.
Qingsong Wang +4 more
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IET Power Electronics, 2023 A new single switch ZVS forward converter with a wide soft‐switching range is proposed here. Compared to the conventional forward converter, the proposed converter uses fewer components and operates under ZVS soft switching.
Mahdi Ghavidel Jalise +6 more
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Constant Frequency ZVS PWM Converter
2021 IEEE Transportation Electrification Conference & Expo (ITEC), 2021 In this paper, a simple yet novel buck or boost adaptive zero-voltage switching (ZVS) converter topology is proposed for soft switching pulse-width modulation (PWM) dc / dc converters. The converter is designed for the high switching frequency that can achieve high efficiency by reducing switching losses for the entire load range at low and high power.
Erdem Asa +3 more
openaire +2 more sources
Globally Unified ZVS and Quasi-Optimal Minimum Conduction Loss Modulation of DAB Converters
IEEE Transactions on Transportation Electrification, 2022 Due to the quick development of wide bandgap power devices, the power density of the converters is expected to be much higher. In order to increase the power density and efficiency of the dual-active-bridge (DAB) converter, especially the efficiency ...
Hangbin Yu +10 more
semanticscholar +1 more source