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The need for multidisciplinary virtual prototyping in power electronics has been well established however design tools capable of facilitating a rapid, iterative virtual design process do not exist. A key challenge in developing such tools is identifying and developing modelling techniques which can account for 3D, geometrical design choices without unduly affecting simulation speed. This challenge...
The existing prognostic techniques for electronics are reviewed and classified into three categories: data driven methods, model driven methods and fusion methods. It ranges from simple statistical methodologies (i.e. historical failure rates and time-series predictions) to high-fidelity models that consider failure mechanisms and their progression. Applications of these techniques, particularly the...
This paper presents the preliminary design of an electro-mechanical de-icing system for avionic applications. The project belongs in the framework of a broader effort, in the power electronics and aerospace communities, to re-think and redesign many functionalities towards a More Electric Aircraft and, in particular, a more efficient one. Due to very stringent requirements in terms of performance,...
Compact thermal impedance models allow fast, fully coupled electro-thermal simulation of multi-chip power modules. Usually, these models are generated through a time and labour intensive process of curve fitting to data points obtained experimentally or from finite-element simulations. This paper demonstrates a new, much faster, technique which mathematically derives such models and validates it against...
This paper investigates the electro-thermal stress levels and related degradation risk affecting standard technology multichip IGBT modules when used in pulsed power resonant converters. Indeed, these feature fairly unique operational characteristics, which differentiate them substantially from more common power electronics applications (e.g., inverters, dc-dc converters). First, an overview of the...
A numerical modelling method for the analysis of solder joint damage and crack propagation has been described in this paper. The method is based on the disturbed state concept. Under cyclic thermal-mechanical loading conditions, the level of damage that occurs in solder joints is assumed to be a simple monotonic scalar function of the accumulated equivalent plastic strain. The increase of damage leads...
Commercial-off-the-shelf electronic components (COTS) offer a very low cost and attractive solution for construction of electronic systems for Mars missions, including the actuator electronic systems for the Mars Rovers. One issue with using COTS lies in the difference between their specified operating temperature range (-55/spl deg/C to125/spl deg/C for military components) and the temperatures observed...
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