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Targeting the development of a silicon carbide (SiC) inverter for electric vehicle/hybrid electric vehicle (EV/HEV) applications, the design considerations of the gate driver for the adopted SiC metal-oxide-semiconductor field-transistor (MOSFET) power modules are presented. Given the system power density requirement, the gate driver design challenges for the commercial off-the-shelf (COTS) SiC modules...
Regarded as one of the most successful wide bandgap (WBG) devices, Silicon Carbide (SiC) metal-oxide-semiconductor field-transistors (MOSFETs) are being considered in an increasing number of power electronics applications. One of those applications is the hybrid and electric vehicle (HEV/EV) traction inverters where high-efficiency and high-power density is essential. From the system-level perspective,...
The solid-state transformer (SST) enabled DC/AC Microgrid provides an effective solution for distributed renewable energy resources (DRER) integration with conventional utility grid. This paper investigates a DC network system consisting of wind turbines, SST, and DC loads. Without any energy storage devices, an autonomous power management strategy based on improved DC bus signaling (DBS) is proposed...
Series-connected power switch provides a viable solution to implement high voltage and high frequency converters. By using the commercially available 1200V Silicon Carbide (SiC) Junction Field Effect Transistor (JFET) and Metal Oxide semiconductor Filed-effect Transistor (MOSFET), a 6 kV SiC hybrid power switch concept and its application are demonstrated. To solve the parameter deviation issue in...
The converse Lyapunov stability problem is proposed for a special class of hybrid systems, hybrid impulsive and switching systems (HISS). The necessary condition is constructed,under which the HISS is proved to be uniformly asymptotically stable with respect to its equilibrium in the state space. The construction method for Lyapunov functions presented in this paper is different from the other literature...
The problem of optimal guaranteed cost control for a class of switched singular systems with time-delay is considered. By means of multiple Lyapunov function approaches and linear matrix inequality technique, a sufficient condition for the existence of guaranteed cost sub-controllers is presented, which is in the form of matrix inequalities, accordingly, both sub-controllers and switching strategy...
The global optimal control problem with free system terminal states is proposed for the hybrid impulsive and switching systems (HISS). Towards the problem mentioned above, the necessary condition of the above problem, the HISS' minimum principle, is given. In the process of proving the above theorem, the Ekeland's variational principle and the matrix cost functional formulation are utilized. Based...
Towards a special class of hybrid systems, the hybrid systems with impulses and switches, a global optimal control problem with free system terminal states is proposed in this paper. Based on this problem, the necessary condition is studied, and then the HISS' minimum principle is obtained. In the proof of the above theorem, the general variational methods and matrix cost functional formulations are...
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