ﻃﺮاﺣﯽ و ﺗﺤﻠﯿﻞ ﮔﺸﺘﺎور ﻣﻮﺗﻮر ﺑﺪون ﺟﺎروﺑﮏ ﺟﺮﯾﺎن ﻣﺴﺘﻘﯿﻢ ﺷﯿﺎر دوﺑﻞ ﺑﺎ آﻫﻨﺮﺑﺎﻫﺎي اﺳﭙﮑﯽ و ﺳﻄﺤﯽ ﺑﺎ اﺳﺘﻔﺎده از روش اﺟﺰاء ﻣﺤﺪود

Design and Torque Analysis of Double-Slot Surface and Spoke-Type BLDC Motor Using Finite Element Method

ﻫﺪف از اﯾﻦ ﺗﺤﻘﯿﻖ، ﻣﻄﺎﻟﻌﻪ ﺗﺄﺛﯿﺮ ﺷﯿﺎر دوم در دﻧﺪاﻧﻪ اﺳﺘﺎﺗﻮر ﺑﺮ روي ﻋﻤﻠﮑﺮد دو ﺳﺎﺧﺘﺎر ﻣﺘﺪاول روﺗﻮر ﺑﻪ ﻧﺎمﻫﺎي اﺳﭙﮑﯽ و ﺳﻄﺤﯽ، ﺑﺮاي ﻣﻮﺗﻮر ﺟﺮﯾﺎن ﻣﺴﺘﻘﯿﻢ ﺑﺪون ﺟﺎروﺑﮏ )BLDC( اﺳﺖ. ﻧﺘﺎﯾﺞ ﺑﺮاي ﺣﺎﻟﺖﻫﺎي ﻣﺨﺘﻠﻒ ﺑﺴﺘﻪ ﺑﻮدن ﺷﯿﺎرﻫﺎ اراﺋﻪ و ﻣﻘﺎﯾﺴﻪ ﺷﺪه اﺳﺖ. ﺳﭙﺲ ﺑﺎ ﺟﺎيﮔﺬاري ﯾﮏ ﺳﯿﻢﭘﯿﭻ ﺗﻐﺬﯾﻪ ﺷﺪه ﺑﺎ ﺟﺮﯾﺎن ﻣﺴﺘﻘﯿﻢ و ﯾﺎ آﻫﻨﺮﺑﺎﻫﺎي ﻣﻐﻨﺎﻃﯿﺲ داﺋﻢ درون ﺷﯿﺎر دﻧﺪاﻧﻪﻫﺎي اﺳﺘﺎﺗﻮر ﻣﻮﺗﻮري ﮐﻪ در ﻣﺮاﺣﻞ ﻗﺒﻞ ﺑﻬﺘﺮﯾﻦ ﻋﻤﻠﮑﺮد را داﺷﺘﻪ، دو ﻣﺪل ﻫﯿﺒﺮﯾﺪ BLDC ﻣﻌﺮﻓﯽ و ﻣﻮرد ﻣﻄﺎﻟﻌﻪ ﻗﺮار ﮔﺮﻓﺘﻪاﻧﺪ. ﻧﺘﺎﯾﺞ ﺣﺎﮐﯽ از آن اﺳﺖ ﮐﻪ روﯾﮑﺮد ﺑﺴﺘﻦ ﺷﯿﺎر ﺑﻪ ﺷﺪت ﺑﺮ روي ﻧﻮﺳﺎﻧﺎت ﮔﺸﺘﺎور ﻣﺆﺛﺮ اﺳﺖ در ﺣﺎﻟﯽﮐﻪ ﮔﺸﺘﺎور ﺗﻮﻟﯿﺪي ﻫﺮ دو ﺳﺎﺧﺘﺎر ﺗﻘﺮﯾﺒﺎً ﺛﺎﺑﺖ ﻣﺎﻧﺪه اﺳﺖ. در ﺧﺼﻮص HBLDC، ﻣﯿﺪان اﻟﮑﺘﺮوﻣﻐﻨﺎﻃﯿﺴﯽ ﺟﺎﻧﺒﯽ ﮐﻪ در ﺷﯿﺎر دﻧﺪاﻧﻪ اﺳﺘﺎﺗﻮر ﺟﺎيﮔﺬاري ﺷﺪه ﻋﻤﻠﮑﺮد ﮔﺸﺘﺎوري ﻣﻮﺗﻮرﻫﺎ را ﺑﻬﺒﻮد ﻣﯽﺑﺨﺸﺪ. در ﻫﻤﻪ ﻣﺮاﺣﻞ اﯾﻦ ﺗﺤﻘﯿﻖ از روش اﺟﺰاي ﻣﺤﺪود اﺳﺘﻔﺎده ﺷﺪه اﺳﺖ.

The aim of this paper is to investigate the impact of second slot in stator tooth on performance of two commonly used rotor structures, namely Surface-type and Spoke-type, for a brushless direct current (BLDC) motor. The comparative results are reported for different closing slot conditions. Afterwards by inserting a direct current driven winding or permanent magnets (PMs) into the stator tooth slots of best performed model of previous stage, two hybrid-brushless direct current (HBLDC) motors are introduced and studied. The results demonstrated that slot-closing strategy has high impact on torque fluctuations while the torque produced remain almost constant. For HBLDC, the auxiliary Electro-Magnetic field, placed in stator slot, developed torque performance of the motors. The finite element method (FEM) is used in stages of study.