ﺑﺴﻤﻪ ﺗﻌﺎﻟﻲ
ﺗـﺎرﻳﺦ.................................1387/9/9 .... :
ﻓـﺮم اﻃﻼﻋﺎت ﭘﺎﻳﺎنﻧـﺎﻣﻪ
ﻛﺎرﺷﻨـﺎﺳﻲ -ارﺷﺪ و دﻛﺘـﺮا
ﻣﺪرك ﺷﻤﺎره
ﻛﺘﺎﺑﺨـﺎﻧﻪ ﻣﺮﻛـﺰي
82123926 ﺷﻤﺎره داﻧﺸﺠﻮِِﻳﻲ: رﺿﺎ ﻧﺎم : ﻧﻮروزﻳﺎن ﻧﺎم ﺧﺎﻧﻮادﮔﻲ :
ﻣﺸﺨﺼﺎت داﻧﺸﺠﻮ
ﮔﺮوه :ﻗﺪرت ﺑﺮق رﺷﺘﻪ ﺗﺤﺼﻴﻠﻲ: داﻧﺸﻜﺪه :ﺑﺮق
ﭘﻴﺎده ﺳﺎزي ﺷﺒﻜﻪﻫﺎي ﺗﻮزﻳﻊ ACو DCﺑﺎ ﻣﻨﺎﺑﻊ ﺗﻮﻟﻴﺪ ﭘﺮاﻛﻨﺪه و اراﺋﻪ روﺷﻬﺎي ﺑﻬﺮهﺑﺮداري ﻫﻤﺎﻫﻨﮓ در ﺷﺮاﻳﻂ
ﻋﻨﻮان
اﺳﺘﺎﺗﻴﻚ و دﻳﻨﺎﻣﻴﻚ
Implementation of DC and AC Distribution Systems with Distributed Generation Resources
Title : and Offering the Coordinated Operation Approach in Dynamic and Static Conditions
درﺟﻪ و رﺗﺒﻪ درﺟﻪ و رﺗﺒﻪ
ﻧﺎم ﺧﺎﻧﻮادﮔﻲ :ﻗﺮه ﭘﺘﻴﺎن ﻧﺎم ﺧﺎﻧﻮادﮔﻲ :ﻋﺎﺑﺪي
اﺳﺘﺎد اﺳﺘﺎد اﺳﺘﺎد راﻫﻨﻤﺎ
ﻧﺎم :ﮔﺌﻮرك ﻧﺎم :ﻣﻬﺮداد
درﺟﻪ و رﺗﺒﻪ درﺟﻪ و رﺗﺒﻪ
ﻧﺎم ﺧﺎﻧﻮادﮔﻲ : ﻧﺎم ﺧﺎﻧﻮادﮔﻲ :ﺳﻴﺪ ﺣﺴﻴﻦ
اﺳﺘﺎد
اﺳﺘﺎد ﻣﺸﺎور
ﻧﺎم: ﻧﺎم :ﺣﺴﻴﻨﻲ
87-88 ﺳﺎل ﺗﺤﺼﻴﻠﻲ: دﻛﺘﺮا ارﺷﺪ { ﻛﺎرﺷﻨﺎﺳﻲ{ داﻧﺸﻨﺎﻣﻪ
ﻧﻈﺮي ﺗﻮﺳﻌﻪ اي{ ﺑﻨﻴﺎدي{ ﻛﺎرﺑﺮدي ﻧﻮع ﭘﺮوژه
{ ﺗﻌﺪاد ﺿﻤﺎﺋﻢ: ﺗﻌﺪاد ﻣﺮاﺟﻊ: ﺗﻌﺪاد ﺻﻔﺤﺎت272:
0 100
واژهﻧﺎﻣﻪ : { ﻧﻘﺸﻪ: ﻧﻤﻮدار : ﺟﺪول : ﺗﺼﻮﻳﺮ : ﻣﺸﺨﺼﺎت ﻇﺎﻫﺮي
اﻧﮕﻠﻴﺴﻲ ﻓﺎرﺳﻲ ﭼﻜﻴﺪه اﻧﮕﻠﻴﺴﻲ ﻓﺎرﺳﻲ زﺑﺎن ﻣﺘﻦ
ﻟﻮح ﻓﺸﺮده دﻳﺴﻜﺖ ﻓﻼﭘﻲ{ ﻳﺎداﺷﺖ
ﺗﻮﺻﻴﻔﮕﺮ
ﻛﻴﻔﻴﺖ ﺑﺮق ،ﭘﻴﺎده ﺳﺎزي ﺷﺒﻜﻪﻫﺎي ﺗﻮزﻳﻊ ACو ،DCﻛﻨﺘﺮل وﻟﺘﺎژ DCو ﻣﻨﺎﺑﻊ ﺗﻮﻟﻴﺪ ﭘﺮاﻛﻨﺪه ﻛﻠﻴﺪ واژه ﻓﺎرﺳﻲ
Unbalanced load; Power quality; Symmetrical components and Control strategy, DC distribution system, Distributed ﻛﻠﻴﺪ واژه ﻻﺗﻴﻦ
Generation
ﭼﻜﻴــﺪه :
ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ ﺗﺤﻮﻻت اﺧﻴﺮ در ﺳﻴﺴﺘﻢﻫﺎي ﺗﻮزﻳﻊ اﻧﺮژي اﻟﻜﺘﺮﻳﻜﻲ ،ﺗﺮﻛﻴﺐ ﺳﻴﺴﺘﻢﻫﺎي ﺗﻮزﻳﻊ ACو DCاز ﻧﻈﺮ ﻛﻴﻔﻴﺖ ﺑﺮق،
اﻗﺘﺼﺎدي و ﻗﺎﺑﻠﻴﺖ اﻃﻤﻴﻨﺎن ﺿﺮوري ﺑﻪ ﻧﻈﺮ ﻣﻲرﺳﺪ .ﺑﻨﺎﺑﺮاﻳﻦ ،ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ اﻫﻤﻴﺖ ﻫﻤﺎﻫﻨﮕﻲ ﺑﺎ ﺗﺤﻮﻻت روز دﻧﻴﺎ ،ﭘﻴﺎده ﺳﺎزي
ﺷﺒﻜﻪﻫﺎي ﺗﻮزﻳﻊ ACو DCدر ﺑﻬﺮه ﺑﺮداري ﺗﺮﻛﻴﺒﻲ ﺑﺎ ﺣﻀﻮر ﻣﻨﺎﺑﻊ ﺗﻮﻟﻴﺪ ﭘﺮاﻛﻨﺪه ﺿﺮوري اﺳﺖ .ﻫﺪف از اﻳﻦ ﺗﺤﻘﻴﻖ ،ﻣﺪل ﺳﺎزي
ﻋﻤﻠﻜﺮد ﻳﻚ ﺳﻴﺴﺘﻢ ﺗﻮزﻳﻊ DCﺷﺎﻣﻞ ﻣﺒﺪل ﻫﺎي اﻟﻜﺘﺮوﻧﻴﻚ ﻗﺪرت ،ﺑﺎرﻫﺎي اﻟﻜﺘﺮﻳﻜﻲ ،ﻣﻴﻜﺮوﺗﻮرﺑﻴﻦ ،ﭘﻴﻞ ﺳﻮﺧﺘﻲ ،آراﻳﻪ
ﺧﻮرﺷﻴﺪي و ﺗﻮرﺑﻴﻦ ﺑﺎدي اﺳﺖ .ﺑﺪﻳﻦ ﻣﻨﻈﻮر ،ﻣﻔﺎﻫﻴﻢ اوﻟﻴﻪ در ﺳﻴﺴﺘﻢ ﻫﺎي ﺗﻮزﻳﻊ DCﺑﻪ ﺻﻮرت ﻛﺎﻣﻞ ﺑﺮرﺳﻲ ﻣﻲﮔﺮدد .ﻫﻤﭽﻨﻴﻦ،
ﺳﻴﺴﺘﻢ ﻛﻨﺘﺮل ﻣﺒﺪلﻫﺎي DGﺟﻬﺖ اﺗﺼﺎل ﻣﻨﺎﺑﻊ ﺗﻮﻟﻴﺪ ﭘﺮاﻛﻨﺪه ﺑﻪ ﺳﻴﺴﺘﻢ ﺗﻮزﻳﻊ ،DCﻣﺒﺪلﻫﺎي ﺷﺒﻜﻪ ﺟﻬﺖ اﺗﺼﺎل ﺳﻴﺴﺘﻢ ﺗﻮزﻳﻊ
DCﺑﻪ ﺷﺒﻜﻪ ،ACﻣﺒﺪل ذﺧﻴﺮهﺳﺎزي ﺟﻬﺖ اﺗﺼﺎل ﺳﻴﺴﺘﻢ اﻧﺒﺎره اﻧﺮژي ﺳﻴﺴﺘﻢ ﺗﻮزﻳﻊ DCو ﻣﺒﺪل ﺑﺎر ﺟﻬﺖ اﺗﺼﺎل ﺑﺎرﻫﺎي
اﻟﻜﺘﺮﻳﻜﻲ ﺑﻪ ﺳﻴﺴﺘﻢ ﺗﻮزﻳﻊ DCﺑﺮرﺳﻲ ﻣﻲ ﺷﻮد.
ﻃﺮاﺣﻲ ﺳﻴﺴﺘﻢ ﻛﻨﺘﺮل وﻟﺘﺎژ DCﺑﺎ اﻫﺪاف ﺗﺜﺒﻴﺖ وﻟﺘﺎژ DCدر ﻣﺤﺪوده ﻣﺠﺎز ،ﺣﺬف ﺟﺮﻳﺎن ﭼﺮﺧﺸﻲ در ﻣﺒﺪل ﻫﺎ و اﻳﺠﺎد
ﺗﻘﺴﻴﻢ ﺗﻮان ﻣﻨﺎﺳﺐ ،ﻣﻄﺮح ﻣﻲ ﮔﺮدد .ﻫﻤﭽﻨﻴﻦ ،روش ﺟﺪﻳﺪ و ﺑﺴﻴﺎر ﺳﺎدهاي ﺟﻬﺖ ﻣﺤﺎﺳﺒﻪ وﻟﺘﺎژ ،DCﺑﺪون ﻧﻴﺎز ﺑﻪ ﻣﺪل ﺳﺎزي
دﻗﻴﻖ ﺳﻴﺴﺘﻢ ،ﭘﻴﺸﻨﻬﺎد ﻣﻲ ﺷﻮد .ﺳﻴﺴﺘﻢﻫﺎي ﺗﻨﻈﻴﻢ ﺗﻮان ﺟﺪﻳﺪي ﺑﺮاي ﻣﺒﺪلﻫﺎي واﺳﻂ اﻟﻜﺘﺮوﻧﻴﻚ ﻗﺪرت ﭘﻴﺸﻨﻬﺎد و ﻣﺰاﻳﺎي ﻣﺨﺘﻠﻒ
آﻧﻬﺎ ﻣﻄﺮح ﻣﻲ ﺷﻮد .اﺳﺘﺮاﺗﮋي ﻛﻨﺘﺮﻟﻲ واﺣﺪﻫﺎي ﺗﻮﻟﻴﺪ ﺑﺎﻳﺪ ﻃﻮري ﭘﻴﺎده ﺷﻮد ﻛﻪ ﻫﺮ واﺣﺪ ﺗﻮﻟﻴﺪ ﺑﺎﻳﺪ ﺑﺪون اﺛﺮات ﺳﻮء ﻣﺘﻘﺎﺑﻞ
واﺣﺪﻫﺎي دﻳﮕﺮ ﻗﺎﺑﻞ ﻛﻨﺘﺮل ﺑﺎﺷﺪ.
در اﻳﻨﺠﺎ ﻫﺪف ﺟﺎﻳﮕﺰﻳﻨﻲ ﺳﻴﺴﺘﻢﻫﺎي ﻗﺪرت DCﺑﺎ ﺳﻴﺴﺘﻢﻫﺎي ﻗﺪرت ﺗﻮزﻳﻊ ACﻧﻤﻲﺑﺎﺷﺪ ،ﺑﻠﻜﻪ ﻫﺪف اﺻﻠﻲ ﺗﺮﻛﻴﺐ اﻳﻦ دو
ﻧﻮع ﺳﻴﺴﺘﻢ در ﺗﻮزﻳﻊ اﻧﺮژي اﻟﻜﺘﺮﻳﻜﻲ اﺳﺖ .ﻣﺒﺪﻟﻬﺎي اﻟﻜﺘﺮوﻧﻴﻚ ﻗﺪرت در ﺗﺮﻛﻴﺐ ﺷﺒﻜﻪﻫﺎي ﺗﻮزﻳﻊ DCو ACﺑﻌﻨﻮان ﺑﻬﺴﺎز
ﺗﻮان ﻋﻤﻞ ﻣﻲﻛﻨﻨﺪ .اﻳﻦ رﺳﺎﻟﻪ ﺟﻬﺖ ﺗﺤﻘﻴﻖ در زﻣﻴﻨﻪ اﻳﻦ ﻣﻮﺿﻮﻋﺎت اﻧﺠﺎم ﻣﻲﺷﻮد .ﻫﺪف اﻳﻦ رﺳﺎﻟﻪ ﭘﻴﺎده ﺳﺎزي ﺷﺒﻜﻪﻫﺎي ﺗﻮزﻳﻊ
ACو DCدر ﻛﻨﺎر ﻣﻨﺎﺑﻊ ﺗﻮﻟﻴﺪ ﭘﺮاﻛﻨﺪه ﺟﻬﺖ ﺑﺮرﺳﻲ و اراﺋﻪ روﺷﻬﺎي ﺻﺤﻴﺢ ﺑﻬﺮهﺑﺮداري ﻫﻤﺎﻫﻨﮓ از ﻣﺠﻤﻮﻋﻪ ﺣﺎﺻﻠﻪ اﺳﺖ.
در اﻳﻦ ﺗﺤﻘﻴﻖ اﺑﺘﺪا ،ﻫﺮ ﻳﻚ از ﻣﻨﺎﺑﻊ ﺗﻮﻟﻴﺪ ﭘﺮاﻛﻨﺪه از ﻗﺒﻴﻞ ﻣﻴﻜﺮوﺗﻮرﺑﻴﻦ ،ﭘﻴﻞ ﺳﻮﺧﺘﻲ ،آراﻳﻪ ﺧﻮرﺷﻴﺪي و ﺗﻮرﺑﻴﻦ ﺑﺎدي در اﺗﺼﺎل
ﺑﻪ ﺷﺒﻜﻪﻫﺎي ﺗﻮزﻳﻊ ACو DCدر ﺑﻬﺮه داري on-gridو off-gridﻣﺪﻟﺴﺎزي و ﺷﺒﻴﻪ ﺳﺎزي ﻣﻲﺷﻮد .ﺳﭙﺲ ﻋﻤﻠﻜﺮد ﻳﻚ ﺳﻴﺴﺘﻢ
ﺗﻮزﻳﻊ DCﺷﺎﻣﻞ ﻣﻴﻜﺮوﺗﻮرﺑﻴﻦ و ﭘﻴﻞ ﺳﻮﺧﺘﻲ ،ﺑﺮاي ﻧﺨﺴﺘﻴﻦ ﺑﺎر در اﻳﻦ ﺗﺤﻘﻴﻖ ﺑﺮرﺳﻲ ﺷﺪه اﺳﺖ .ﻫﻤﭽﻨﻴﻦ ،ﻋﻤﻠﻜﺮد ﺗﺮﻛﻴﺒﻲ
ﺳﻴﺴﺘﻢﻫﺎي ﺗﻮزﻳﻊ ACو DCﺷﺎﻣﻞ آراﻳﻪ ﺧﻮرﺷﻴﺪي و ﺗﻮرﺑﻴﻦ ﺑﺎدي در ﺳﺎﺧﺘﺎر ﻣﺨﺘﻠﻒ ﺷﺒﻜﻪﻫﺎي ﺗﻮزﻳﻊ DCﺑﺮرﺳﻲ ﺷﺪه اﺳﺖ.
در اﻧﺘﻬﺎ ﺑﻬﺮه ﺑﺮداري ﺗﺮﻛﻴﺒﻲ ﺳﻴﺴﺘﻢﻫﺎي ﺗﻮزﻳﻊ ACو DCﺷﺎﻣﻞ ﻣﻨﺎﺑﻊ DGﻣﺪﻟﺴﺎزي و ﺷﺒﻴﻪ ﺳﺎزي ﺷﺪه اﺳﺖ .ﻧﺘﺎﻳﺞ ﺷﺒﻴﻪ ﺳﺎزي
ﻫﺎ در اﻳﻦ ﺗﺤﻘﻴﻖ ،ﺑﺎ رواﺑﻂ ﺗﺤﻠﻴﻠﻲ ﻛﺎﻣﻼً ﻫﻤﺨﻮاﻧﻲ دارد .ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ ﻧﺘﺎﻳﺞ ﺑﻪ دﺳﺖ آﻣﺪه ،ﺑﺮﺟﺴﺘﻪ ﺗﺮﻳﻦ ﻣﺰﻳﺖ ﺳﻴﺴﺘﻢ ﻫﺎي ﻛﻨﺘﺮل
ﭘﻴﺸﻨﻬﺎدي در اﻳﻦ ﺗﺤﻘﻴﻖ ،اﻳﺠﺎد اﺳﺘﻘﻼل ﻛﺎﻣﻞ ﺳﻴﺴﺘﻢ ﺗﻮزﻳﻊ DCو ﻫﻤﭽﻨﻴﻦ ،اﺳﺘﻘﻼل ﻛﺎﻣﻞ ﻣﻨﺎﺑﻊ ﺗﻮﻟﻴﺪ ﭘﺮاﻛﻨﺪه ،اﺳﺖ .در ﻧﺘﻴﺠﻪ،
ﺳﻴﺴﺘﻢ ﭘﻴﺸﻨﻬﺎدي در اﻳﻦ ﺗﺤﻘﻴﻖ ،از ﻧﻈﺮ ﻓﻨﻲ ،اﻗﺘﺼﺎدي ،ﻗﺎﺑﻠﻴﺖ اﻃﻤﻴﻨﺎن ،ﻛﻴﻔﻴﺖ ﺑﺮق و ﻗﺎﺑﻠﻴﺖ ﮔﺴﺘﺮش ﺳﻴﺴﺘﻢ ،ﻧﺴﺒﺖ ﺑﻪ ﻛﻠﻴﻪ ﻃﺮح
ﻫﺎي ﺳﻴﺴﺘﻢﻫﺎي ﺗﻮزﻳﻊ DCدر ﺗﺤﻘﻴﻘﺎت اﻧﺠﺎم ﺷﺪه ،داراي ﺑﺮﺗﺮيﻫﺎي ﻗﺎﺑﻞ ﺗﻮﺟﻬﻲ اﺳﺖ .ﻫﻤﭽﻨﻴﻦ ،ﺳﻴﺴﺘﻢ ﭘﻴﺸﻨﻬﺎدي در اﻳﻦ
ﺗﺤﻘﻴﻖ ﺑﺮاي ﻋﻤﻠﻜﺮد ﻣﻮازي ﻣﻨﺎﺑﻊ ،DGﻧﺴﺒﺖ ﺑﻪ ﻛﻠﻴﻪ ﻃﺮح ﻫﺎي ﭘﻴﺸﻨﻬﺎدي در ﺗﺤﻘﻴﻘﺎت ﮔﺬﺷﺘﻪ ،داراي ﺑﺮﺗﺮي ﻫﺎي ﻗﺎﺑﻞ ﺗﻮﺟﻬﻲ از
ﻧﻈﺮ ﻓﻨﻲ ،اﻗﺘﺼﺎدي ،ﻗﺎﺑﻠﻴﺖ اﻃﻤﻴﻨﺎن ،ﻛﻴﻔﻴﺖ ﺑﺮق و ﻗﺎﺑﻠﻴﺖ ﮔﺴﺘﺮش ﺳﻴﺴﺘﻢ ﻣﻲﺑﺎﺷﺪ.
ﺳﻴﺴﺘﻢﻫﺎي ﭘﻴﺸﻨﻬﺎدي در اﻳﻦ ﺗﺤﻘﻴﻖ ،ﺿﻤﻦ ﺑﻬﺴﺎزي ﻛﻴﻔﻴﺖ ﺗﻮان ﻣﺸﺘﺮﻛﻴﻦ ،ﺗﺪاوم ﺳﺮوﻳﺲ دﻫﻲ ﺑﺮاي ﺑﺎرﻫﺎي اﻟﻜﺘﺮﻳﻜﻲ ﻣﻬﻴﺎ
ﻣﻲﻛﻨﺪ .در ﻃﺮحﻫﺎي ﭘﻴﺸﻨﻬﺎدي ﺑﺎرﻫﺎي ﻧﺎﻣﺘﻌﺎدل ﻣﻲﺗﻮاﻧﻨﺪ ﺑﺪون اﻳﻨﻜﻪ ﻧﺎﻣﺘﻌﺎدﻟﻲ را ﺑﻪ ﺷﺒﻜﻪ ﺗﻮزﻳﻊ ACاﻧﺘﻘﺎل دﻫﺪ ﺑﺎ وﻟﺘﺎژ ﺳﻴﻨﻮﺳﻲ
داﻣﻨﻪ و ﻓﺮﻛﺎﻧﺲ ﺛﺎﺑﺖ ﺗﻐﺬﻳﻪ ﻣﻲﺷﻮﻧﺪ .ﺑﺎرﻫﺎي ﺣﺴﺎس ﺑﺪون اﻳﻨﻜﻪ اﻏﺘﺸﺎﺷﺎت ﺷﺒﻜﻪ ﺗﻮزﻳﻊ ACﺑﺮ ﻛﺎرﻛﺮد آﻧﻬﺎ ﺗﺄﺛﻴﺮ ﻛﻨﺪ ﻫﻤﻴﺸﻪ
وﻟﺘﺎژ ﺳﻴﻨﻮﺳﻲ داﻣﻨﻪ و ﻓﺮﻛﺎﻧﺲ ﺛﺎﺑﺖ ﻳﻚ ﭘﺮﻳﻮﻧﻴﺖ درﻳﺎﻓﺖ ﻣﻲﻛﻨﻨﺪ .ﺑﺎرﻫﺎي ﻏﻴﺮﺧﻄﻲ از ﻗﺒﻴﻞ ﺑﺎرﻫﺎي اﻟﻜﺘﺮوﻧﻴﻜﻲ ،ﺑﺪون اﻳﻨﻜﻪ
ﻫﺎرﻣﻮﻧﻴﻚ و اﻏﺘﺸﺎﺷﺎت را ﺑﻪ ﺷﺒﻜﻪ ﺗﻮزﻳﻊ ACاﻧﺘﻘﺎل دﻫﺪ ﺑﺎ وﻟﺘﺎژ ﺳﻴﻨﻮﺳﻲ داﻣﻨﻪ و ﻓﺮﻛﺎﻧﺲ ﺛﺎﺑﺖ ﺗﻐﺬﻳﻪ ﻣﻲﺷﻮﻧﺪ.
ﻧﺘﺎﻳﺞ ﺷﺒﻴﻪﺳﺎزي ﻧﺸﺎن ﻣﻲدﻫﺪ ﻃﺮحﻫﺎي ﭘﻴﺸﻨﻬﺎدي در اﻳﻦ رﺳﺎﻟﻪ ﻣﻲﺗﻮاﻧﺪ ﺟﺎﻳﮕﺰﻳﻦ ﻣﻨﺎﺳﺒﻲ ﺑﺮاي ادوات Custom Power
ﺑﺎﺷﺪ و ﻫﻤﭽﻨﻴﻦ ﻛﻴﻔﻴﺖ ﺑﺮق را ﻧﻴﺰ ﺑﻴﻤﻪ ﻣﻲﻛﻨﺪ.
Abstract : Considering the recent developments in electricity distribution systems, DC distribution
systems have several advantages over AC networks considering economical, technical and reliability constraints.
Thus, analysis of DC distribution systems and designing suitable control strategies are essential. The aim of this
research is modeling a DC distribution system including power electronic converters, loads, microturbine, fuel
cell, photovoltaic and wind turbine. The conrol system of DG converters, interfacing the distributed generation
systems with DC network, network converters, interfacing the AC system with DC network, storage converter,
interfacing the battery storage bank with DC network, and load converter, interfacing the AC and DC load with
DC network, is studied. The DC voltage control system is designed in details. A novel and very simple method is
proposed for DC bus voltage determination. Moreover, powerful power regulation systems are proposed for
network, storage, DG, and load converters. In this thesis, the novel control strategy for network converter based
on instantaneous power regulation scheme and d − q − 0 synchronous reference frame is presented. These control
strateges are controlled the injected active and reactive power to the AC grid. The novel control strategy for
storage converter based on DC voltage droop regulator is presented. This control strategy is controlled the
charging and discharging the battery bank. Also a new control system has been proposed for DG converters. This
controlled is controlled the generated power of the DG units to the DC network. Also, a novel control strategy for
the load converter supplying the unbalanced AC load in the DC distribution system is presented. The control
algorithm results in balanced and sinusoidal load voltages under unbalanced AC loading. The unbalanced load is
characterized in the d − q − 0 rotating coordinate based on symmetrical sequence components. Also, the
mathematical model of the load converter in both a − b − c and d − q − 0 coordinate are derived by using the
average large signal model. Then, two control strategies for the load converter are presented. The first one uses
the conventional d − q − 0 controller to ensure the voltage and current regulation. The second one is a novel
proposed control strategy based on the decomposition of the voltage and current into instantaneous positive,
negative and zero sequences. These three sequences are controlled independently in their own reference frames as
DC signals. Simulation results show the validity and capability of the novel proposed control strategy for each
power electronic converter. This thesis presents modeling and application of each DG units such as, microturbine
(MT) and fuel cell (FC) distributed generation (DG) system, and photovoltaic (PV) and wind turbine (WT)
renewable sources for off-grid and on-grid operation and configuration. The overall configuration of the DG units
is given, dynamic models for DG unit and its power electronic interfacing are described, and novel control
strategy for the DC/AC inverter to control the DG system under different operating conditions is demonstrated.
The simulation results based on PSCAD/EMTDC software show the capability of DG system for dynamic
studying in the various operations. A DC distribution system including microturbine, fuel cell, photovoltaic and
wind turbine is studied. The reason for modeling these distributed generation resources in DC network is their
higher dispatching capability and availability compared with other resources like wind or solar systems.
Simulation results have been verified by using mathematical equations and comparing with previous researches.
It is shown that the most significant characteristic of the proposed control systems is the independent operation of
the DC network and distributed generation units without using energy storage systems. As a result, the proposed
system is preferable to the systems in previous researches from technical, economical, reliability and power
quality points of view. Several case studies have been studied and the simulation results show that DC
distribution system including DG units can provide the premium power quality using proposed methods.
This thesis presents a novel approach to design and analysis of DC microgrid (DCµG) interconnected system
interconnections could be possible via two power electronic systems such as DC/DC converter and high voltage D
DCµG presented in this article is supplied by AC grid as well as, battery bank unit, Distributed Generation (DG)
load unit. This paper also presents a novel control system for both DCµG interconnected systems providing proper
control and cancellation of interactions between DCµGs. Also, suitable large signal model is developed for eac
well as, interconnections. Simulation results obtained through the usage of EMTDC software indicate the
effectiveness of proposed control strategy for DCµG interconnected systems
