کنفرانس مهندسی برق ایران

صفحه اصلی / سی و یکمین کنفرانس بین المللی مهندسی برق

A Multilevel Ac-Ac Converter with Input-series and Output-Parallel as Dynamic Voltage Restorer

نویسندگان :

Seyed mohsen Mortazavi¹ Reza Beiranvand²

1- دانشگاه تربیت مدرس 2- Department of Electrical and Computer Engineering Tarbiat Modares University Tehran, Iran

کلمات کلیدی :

Dynamic voltage restorer

چکیده :

In this paper, a bidirectional multilevel ac-ac converter is presented, which is suitable for high-power applications. The structure of the proposed multilevel converter with series input and parallel output has reduced the input voltage and output current of each level, which reduces the stress on the elements of the proposed converter. Reducing the current and voltage of each level has reduced the dimensions, cost, and losses. Due to the output parallel of the multilevel converter, the ripple of the output current has been reduced. A structure of a multilevel converter as a dynamic voltage restorer (DVR) was proposed which is transformerless. The multilevel converter is examined and analyzed using theoretical relationships in different working modes. Then, to verify the performance of the multilevel converter was simulated as a DVR in Matlab/Simulink and its results were presented. In addition to confirming the performance of the multilevel converter in working modes, the results showed the reduction of voltage and current of each switch for each level.

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