Dedicated system for design, analysis and optimization of AC-DC converters

Abstract

Abstract. This paper presents an originally-developed system for design and optimization of AC-DC converters dedicated in particular to operation in distributed generation systems. The proposed procedure is based on a multi-objective discrete optimization and expert knowledge of electrical engineering, especially power electronics. The required accuracy of calculations is obtained by using the database with real components, while the parameters applied in calculations are based on parameters provided by the manufacturer. The paper presents the foundations and basic system properties, the design and optimization process, and selected optimization results, obtained with a fully functional prototype of the design and optimization system (DaOS).Key words: AC-DC converter, multi-objective optimization, design methodology, distributed generation systems. benefit according to the assumed design criteria -the so-called Pareto optimum [4,12]. The developed optimization system, introduced in [13], allows for the analysis of how a change of one or more design variables will affect the system parameters and desired properties. The implementation of the proposed methodology enables this analysis to be performed in an early stage of the design process, giving the engineer a general overview of the available choices and possibilities. The solution introduced in this work is dedicated for a twolevel voltage source converter (VSC) operating as an interface between a grid, and a distributed generation system called the grid-connected converter (GCC) [13,14]. The selected optimization criteria (design objectives) for the GCC are the fundamental properties of this system: volume, efficiency, weight, power quality, and price. The optimization parameters are design variables: grid filter (type of the filter, values of elements, type of materials and elements used), type of power switches, cooling system, switching frequency, control algorithm (relevant in case Dedicated system for design, analysis and optimization of AC-DC converters

Analysis of AC/DC/DC Converter Modules for Direct Current Fast-Charging Applications

“…It seems advisable to include multi-objective optimization methods in the proposed system design procedure, which would allow optimization of system parameters in terms of efficiency, reliability, and volume or mass reduction. Such works have been undertaken [8,69,70], but due to their complexity, the issues were not conducted for systems with two stages of energy conversion.…”

Bulletin of the Polish Academy of Sciences: Technical Sciences

“…To determine these values for given geometry of the machine, the magnetic field distribution inside of AFPM machine needs to be calculated. So far, most of published works proposed an approach that uses analytical methods to calculate this distribution for a simplified 1D model [1][2][3]. Based on these results, the optimization criteria (usually a single variable objective function) have also been minimized by using analytical methods [4].…”