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Energy crisis and environmental pollution are a serious threat to human survival and sustainable development. To alleviate the energy crisis and maintain the living environment of mankind, people develop and utilize new energy sources such as solar energy and wind energy. In order to ensure the safe and reliable use of the battery, and improve the performance of the battery after group, the battery...
Wide bandgap devices (WBGs) allow Power Factor Correction (PFC) circuits to operate at MHz frequency which leads to a better power density. Compared with kHz operation, MHz PFC in critical conduction mode (CrM) yields larger inductor valley current during the switch soft turn-on. Moreover, the input current distortion near grid voltage zero crossing has not been taken into account in the traditional...
In this paper, a family of bidirectional dual-input dc/dc converters is proposed to combine a photovoltaic system and battery energy storage system. This family of converters utilizes a full-bridge, or half-bridge current-source circuit, as the primary side, and a quasi-switched-capacitor circuit as the secondary side. Depending on the power level of the primary side and voltage level of the battery,...
A full-bridge current-source isolated dc/dc converter for Photovoltaic applications is proposed in this paper. The converter utilizes a Quasi-Switched-Capacitor circuit as the secondary side, which features a reduced number of switches and voltage stresses, and an additional boost function. Through the proposed control algorithm, soft-switching can be realized for all switches. A 1.2 kW, 1 MHz, 40...
This paper presents the development of a high voltage evaluation platform to investigate both the static and switching characteristics of silicon (Si) and silicon carbide (SiC) based high voltage (HV) power devices. The test methodologies, design, implementations, and safety guidelines for the HV device evaluation are elaborated. A 15 kV rated double pulse tester is built to study the dynamic behaviors...
In this paper, a family of bidirectional dual-input dc/dc converters is proposed to combine the Photovoltaic (PV) system with the Energy Storage System (ESS). This family of converters utilizes a full-bridge or half-bridge current-source circuit as the primary side, and the Quasi-Switched-Capacitor circuit as the secondary side. Depending on the power level of the primary side and voltage level of...
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