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http://dx.doi.org/10.5207/JIEIE.2005.19.3.035

Improved instantaneous Following Control Function for High Power Factor PWM Matrix Converter  

Kim, Kwang-Tae (부산정보대학 전기자동화과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.19, no.3, 2005 , pp. 35-43 More about this Journal
Abstract
Matrix converters have been studied for eliminating dc link of conventional converter-inverter system, and various undulation strategy have been proposed. Therefore, matrix converter have no energy storage component except for small ac later for the elimination of switching ripple, and can be made compact and highly reliable compare with the do link inverter system. Matrix converter, however, directly connected the input and the output terminals by bidirectional static switch. As a result if the input voltage are asymmetrical, and contain harmonics, the influence of the distortions directly appear on the output terminal. This problem is a major obstacle to the matrix converter. A new control method using average comparison strategy have been proposed in this paper. This control method realizes sinusoidal input and output current unity input displacement factor regardless of load power factor. Moreover, compensation of the asymmetrical and/or harmonic containing input voltage is automatically realized, and calculation time of control function is reduced.
Keywords
Bidirectional Static Switch; Mapping Control Function; Sector; Sampling Period;
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