Study on Active Power Filter for Grid-Connected Inverter
碩士 === 國立成功大學 === 電機工程學系 === 102 === The purpose of this thesis is to implement the active power filter which can correct the output current of the grid-connected inverter. In order to mitigate the distortion and improve the efficiency of power transmission, the current fed to the grid should be cor...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2014
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| Online Access: | http://ndltd.ncl.edu.tw/handle/79435243837572442206 |
| Summary: | 碩士 === 國立成功大學 === 電機工程學系 === 102 === The purpose of this thesis is to implement the active power filter which can correct the output current of the grid-connected inverter. In order to mitigate the distortion and improve the efficiency of power transmission, the current fed to the grid should be corrected into a sinusoidal waveform. The circuit of the active power filter is using single phase full-bridge structure. The distortion component of current will be detected by the designed control system to obtain the compensation current command. The current closed-loop control scheme includes PI-controller and triangular carrier control, and the operating stage of active power filter will be changed to get the appropriate compensation current. The control circuit also generates a unity sinusoidal reference signal to make the corrected current to be inphase with mains voltage. The proposed active power filter is simulated by PSIM. A prototype circuit is implemented to show the effect of current correction.
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