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The aim of this paper is to present the practical behaviour of a power device at the limit of the operational nominal range. The extreme states under analysis are created through supplying the unit with either minimal voltage and maximum load, or maximum voltage and minimal load. Special aspects of the test-procedure needed to increase the dynamic performance of the 18-kW Power Supply Unit are also...
A problem arises in data mining, when classifying unbalanced datasets using Support Vector Machines. Because of the uneven distribution and the soft margin of the classifier, the algorithm tries to improve the general accuracy of classifying a dataset, and in this process it might misclassify a lot of weakly represented classes, confusing their class instances as overshoot values that appear in the...
Such additional electronics results in a need for more electrical energy in automobiles and other vehicles. Because of this increase in electrical load, higher power demands are being placed on automotive alternator systems. It would, therefore, be desirable to provide a means by which the power output capability of an alternator can be increased. In this paper the author presents several solutions...
The behavior of standard evolutionary algorithm in the case of multi-modal optimization problems meets a major difficulty. It generally converges towards a single optimum point failing to maintain in the population the multiple optima of the problem under consideration. Various methods enrich the standard algorithm to obtain efficient techniques for solving multi-modal problems. These methods mainly...
This approach is focused on developing new tools for more efficient energy management at the end user, by following the SCUC requirements and general electrical grid regulation. This approach consists of the applying the object oriented modeling method helped by Java and scalable vector graphics for building a user/consumer level SCUC (CL-SCUC). The designed system goal is intending to create more...
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