ﺗﺤﻠﯿﻞ و اﺟﺮاي روش ﺣﺬف ﻣﺆﻟﻔﻪﻫﺎي ﻫﺎرﻣﻮ ﻧﯿﮏ ژﻧﺮاﺗﻮر ﺳﻨﮑﺮون ﺑﺎ ﺑﺎرﻫﺎ ي ﻏﯿﺮﺧﻄﯽ

Analysis and Implementation of Harmonic Elimination of a Synchronous Generator Supplying Nonlinear Loads

ﺷﮑﻞ ﻣﻮج وﻟﺘﺎژ ﺗﻮﻟﯿﺪي در ﺗﺮﻣﯿﻨﺎل ژﻧﺮاﺗﻮرﻫﺎي ﺳﻨﮑﺮون ﻏﺎﻟﺒﺎً ﻏﯿﺮﺳﯿﻨﻮﺳﯽ ﻣﯽﺑﺎﺷﺪ و در ﺻﻮرﺗﯽﮐﻪ ﺑﺎرﻫﺎي ﻣﺼﺮﻓﯽ از ﻧﻮع ﻏﯿﺮﺧﻄﯽ ﺑﻪ آن ﻣﺘﺼﻞ ﮔﺮدد وﻟﺘﺎژ ﻏﯿﺮﺳﯿﻨﻮﺳﯽ دوﺳﺮ ﺑﺎر اﯾﺠﺎد ﻣﯽ ﮔﺮدد ﮐﻪ ﺑﺎﻋﺚ ﮐﺎﻫﺶ ﮐﯿﻔﯿﺖ ﺗﻮان در ﻣﺼﺮفﮐﻨﻨﺪﮔﺎن ﻣﯽﺷﻮد. در اﯾﻦ ﺷﺮاﯾﻂ، وﺟﻮد ﻣﺆﻟﻔﻪﻫﺎي ﻫﺎرﻣﻮﻧﯿﮏ ﺑﺎﻋﺚ ﭘﺪﯾﺪآﻣﺪن آﺛﺎر ﻣﺨﺮﺑﯽ از ﺟﻤﻠﻪ اﻓﺰاﯾﺶ ﺗﻠﻔﺎت، ﻧﻮﺳﺎﻧﺎت ﻓﺮﮐﺎﻧﺲ و ﮐﺎﻫﺶ ﭘﺎﯾﺪاري ﺷﺒﮑﻪ ﺧﻮاﻫﺪ ﺷﺪ. در اﯾﻦ ﻣﻘﺎﻟﻪ ﺑﻪ ﺑﺮرﺳﯽ ﻣﺆﻟﻔﻪﻫﺎي ﻣﺨﺘﻠﻒ ﻫﺎرﻣﻮﻧﯿﮑﯽ و اﻫﻤﯿﺖ آن در ژﻧﺮاﺗﻮرﻫﺎي اﻟﮑﺘﺮﯾﮑﯽ ﻣﺘﺼﻞ ﺑﻪ ﺷﺒﮑﻪ ﻣﺤﻠﯽ ﺑﺮ ﭘﺎﯾﻪ ﺗﻤﺮﮐﺰ ﺑﺮ ﺳﯿﻢﭘﯿﭽﯽﻫﺎي ﻣﺘﺪاول در ﺑﺎرﻫﺎي ﻏﯿﺮﺧﻄﯽ ﭘﺮداﺧﺘﻪ ﻣﯽﺷﻮد. ﺳﭙﺲ ﺑﺎ اﺗﺼﺎل ﺑﺎرﻫﺎي ﻣﺨﺘﻠﻒ ﻏﯿﺮﺧﻄﯽ ﺑﻪ ژﻧﺮاﺗﻮر ﺳﻨﮑﺮون ﯾﮏ و ﺳﻪ ﻻﯾﻪ، آﺛﺎر ﻣﺆﻟﻔﻪﻫﺎي ﻫﺎرﻣﻮﻧﯿﮑﯽ وﻟﺘﺎژ و ﺟﺮﯾﺎن ﺑﻪﺻﻮرت ﻋﻤﻠﯽ آزﻣﺎﯾﺶ ﺷﺪه اﺳﺖ. ﻻﻣﭗ ﮐﻢﻣﺼﺮف، ﻣﻮﺗﻮر اﻟﻘﺎﯾﯽ ﺳﻪ ﻓﺎز و ﻻﻣﭗ رﺷﺘﻪاي ﻣﺘﺼﻞ ﺑﻪ ﭘﻞ دﯾﻮد )اﺳﺘﻔﺎده از ﻗﻄﻌﺎت اﻟﮑﺘﺮوﻧﯿﮏ ﻗﺪرت( ﺑﻪﻋﻨﻮان ﺳﻪ ﺑﺎر اﻟﮑﺘﺮﯾﮑﯽ ﻏﯿﺮﺧﻄﯽ در اﯾﻦ ﻣﻘﺎﻟﻪ آزﻣﺎﯾﺶ ﺷﺪﻧﺪ. در ﻧﻬﺎﯾﺖ ﻧﺘﺎﯾﺞ ﺑﻪ دﺳﺖآﻣﺪه، ﺑﺎ ﻣﺤﺎﺳﺒﻪ THD ﺣﺎﻻت ﻣﺨﺘﻠﻒ آزﻣﺎﯾﺶ ﻫﺎي اﻧﺠﺎم ﺷﺪه ﺑﺮ دو ﻃﺮح )ﻃﺮح ﺳﯿﻢﭘﯿﭽﯽ ﺳﻪ ﻻﯾﻪ ﺑﻪﺟﺎي ﺳﯿﻢﭘﯿﭽﯽ ﯾﮏ ﻻﯾﻪ( ﻣﻮردﻧﻈﺮ ارزﯾﺎﺑﯽ ﺷﺪ. ﺑﺎ ﻣﻘﺎﯾﺴﻪ ﺗﯽ اچ دي ﺑﻪدﺳﺖآﻣﺪه از آزﻣﺎﯾﺶ ﻫﺎ ، ﺑﺮﺗﺮي ﻃﺮح ﺳﯿﻢﭘﯿﭽﯽ ﺳﻪ ﻻﯾﻪ ﻧﺴﺒﺖ ﺑﻪ ﻃﺮح ﻣﺘﻌﺎرف ﻣﯽﺑﺎﺷﺪ.

One The generation of sinusoidal voltage in terminal of synchronous generators is often non-sinusoidal due to the connection of non-linear loads to it. Under these conditions, the flowing current and voltage waveforms would considerably be affected. This would ultimately result in destructive effects such as increased losses, frequency fluctuations, reduced grid stability as well as reduced power quality of the load. Accordingly, this paper examines the various harmonic components and their impact on synchronous generators with conventional windings feeding nonlinear local loads. The consequences of the harmonic contents of the output waveforms by varying nonlinear loads were tested practically by implementing the single and triple layer winding synchronous generators. Then, the energy-saving lightbulb, the three-phase induction motor, and the incandescent lamp connected to the diode bridge (using power electronic components) were utilized as three non-linear electrical charges. Finally, the obtained results were evaluated by calculating the THD of the different states of the experiments performed on the two designs (three-layer winding design instead of one-layer winding). By comparing the experimental THD, the three-layer winding design was superior to the conventional one.