| Summary: | 碩士 === 國立高雄科技大學 === 電機工程系 === 107 === As technology advances, power electronic technology is widely used in industry to improve the performance and energy-saving effects required by the production process. However, the power quality pollution derived from power electronic circuit has also become an important issue in industrial power distribution systems. In this thesis, the DC motor drive circuit in a factory is taken as an example to discuss harmonic distortion control. By using the power quality measuring instrument to monitor the power source harmonics of the DC motor drive circuit, the analysis of the measurement results and the evaluation of the harmonic control method can be done. At last, due to the consideration of the feasibility and the cost of maintenance, a passive harmonic filter is built and installed to reduce the impact of harmonics on the power system and to comply with the limits of the IEEE519 standard. After the filter is added to the system, long-term monitoring is performed to review and verify the effectiveness of the harmonic improvement technology.
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