วงจรกรองกระแสฮาร์มอนิกส์ลำดับศูนย์สำหรับระบบไฟฟ้าสามเฟสสี่สาย

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ชัชวาลย์ เยรบุตร

Abstract

The proliferation of electronic loads has been strongly related to the problems such as neutral conductor overloading, transformer overheating, and interference with communication systems As a result, this research aims to develop a zero sequence harmonic filter which capable of reducing the neutral current. In this paper analysis and design of the proposed zero sequence harmonic filter are presented. Viability of the proposed filter is evaluated by the computer simulation. The laboratory prototype of the proposed filter 1kVA, 240/416V, 50Hz is developed and tested under balanced loads and unbalanced loads. The results from computer simulation and laboratory test are consistent and confirm effectiveness of the proposed zero sequence harmonic filter

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Research Articles