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To solve the simulation convergence problem of Silicon Carbide metal-oxide semiconductor field effect transistor (SiC MOSFET) models, this paper proposes a non-segmented model for SiC MOSFETs, which uses non-segmented, smooth continuous equations to describe the static and dynamic characteristics of SiC MOSFET. Further, the static characteristic of SiC MOSFET obtained by the non-segmented model is...
This paper proposes a systematic method of the topology generation rules to generate dual-buck inverter topologies based on the concept of power flowing routes splitting and reconstruction. By using these topology generation rules, not only the existing dual-buck inverter topologies, but also a family of new transformerless DBFBI topologies with high reliability are derived from conventional H-bridge...
A dual-phase-shift controlled isolated buck-boost converter is presented for wide input or output voltage range applications. Two transformers and a voltage-doubler rectifier with embedded bidirectional switch are employed. The primary windings of the two transformers are in series and the secondary windings are in parallel. With optimized dual-phase-shift modulation strategies, zero voltage switching...
Effects of lightly doped drain (LDD) on the 100 nm CMOS compatible vertical MOSFETs are investigated for different body doping. It is found that with the increase of LDD doping drive current of vertical MOSFET increases whereas sub-threshold performance is degraded. The degradation of sub-threshold performance is found to be more prominent at low body doping values. In addition, the threshold voltage...
This paper analyzes a high efficient SiC MOSFET based inverter without externally antipa-rallelled diodes. To this end, steady-state performances of MOSFET channel and its body diode are demonstrated; proper control and modulation technique is applied to realize synchronous rectification of the inverter and to minimize the conduction loss of body diodes. Power loss analysis of the inverter under various...
Voltage source inverter is commonly used as the interface to connect the renewable energy source and the power grid. In order to improve the performance of renewable energy system, the topology and control method of the inverter system need to be analyzed. In this paper, a single-phase hybrid cascaded inverter is proposed. It is based on two kinds of power devices - MOSFET and IGBT. The cascaded inverter...
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