Development of Combined System of the Series- and Shunt-Type Three-phase Ative Power Filters

• Main Authors: Li Hsiu Chen, 陳立修
• Other Authors: Sheng-Nian Yeh
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/17828847565296238828

碩士 === 國立臺灣科技大學 === 電機工程系 === 88 === This thesis is concerned with the design and implementation of the combined system of the series- and shunt-type three-phase active power filters. The proposed active power filters are driven by voltage source inverter and used mainly in the systems with nonlinear loads to compensate voltage variation and current harmonic. The shunted active filter is introduced to eliminate the current harmonics and compensate the reactive power, while the serial active filter is used to reduce voltage variation in power lines and transformers. The combined system designed thus provides the feature of current harmonic elimination, power factor compensation and reduced voltage variation. The performance of the system is first simulated by digital computer. Then, PC-based digital control is used to implement the combined active power filter. The experimental results indicate that under rated operation of 1kVA, the system possesses a power factor of 1.0, a total harmonic distortion of current of less than 5.0% on the utility side, a load terminal voltage with voltage variation within 0.1%.