ﮐﻨﺘﺮل ﺑﺮداري ﺳﺮﻋﺖ و ﺗﻮان راﮐﺘﯿﻮ ژﻧﺮاﺗﻮر اﻟﻘﺎﯾﯽ دوﺗﺤﺮﯾﮑﻪ ﺑﺪون ﺟﺎروﺑﮏ ﻣﺒﺘﻨﯽ ﺑﻪ روش ﮐﻨﺘﺮل ﻏﯿﺮﺧﻄﯽ

Vector Control of Speed and Reactive Power of Brushless Doubly Fed Induction Generator Based on Nonlinear Control Approach

ژﻧﺮاﺗﻮر اﻟﻘﺎﯾﯽ دوﺗﺤﺮﯾﮑﻪ ﺑﺪون ﺟﺎروﺑﮏ ﯾﮑﯽ از ﻋﻨﺎﺻﺮ ﻣﻬﻢ ﺧﺎﻧﻮاده ژﻧﺮاﺗﻮرﻫﺎي ﺟﺮﯾﺎن ﻣﺘﻨﺎوب ﺑﺎ ﺗﻐﺬﯾﻪ دوﮔﺎﻧﻪ اﺳﺖ ﮐﻪ در ﺳﺎلﻫﺎي اﺧﯿﺮ ﺑﻪ ﻣﺮزﻫﺎي ﺗﺠﺎريﺳﺎزي ﻧﺰدﯾﮏ ﺷﺪه اﺳﺖ. اﯾﻦ ژﻧﺮاﺗﻮر، ﺑﺮﺧﯽ از ﺧﺼﻮﺻﯿﺎت ﺑﺎرز ژﻧﺮاﺗﻮر اﻟﻘﺎﯾﯽ ﻗﻔﺲ ﺳﻨﺠﺎﺑﯽ و ژﻧﺮاﺗﻮر ﺳﻨﮑﺮون ﻣﻌﻤﻮﻟﯽ را ﺑﻪﻃﻮر ﻫﻤﺰﻣﺎن داراﺳﺖ و در ﻋﯿﻦ ﺣﺎل، ﺑﻪ ﯾﮏ ﻣﺒﺪل ﺑﺎ ﻇﺮﻓﯿﺘﯽ ﮐﻤﺘﺮ از ﻇﺮﻓﯿﺖ ﻧﺎﻣﯽ ژﻧﺮاﺗﻮر ﻧﯿﺎز دارد. ﯾﮑﯽ از ﭼﺎﻟﺶﻫﺎي ﻣﻬﻢ در ﻣﺴﯿﺮ ﺗﮑﺎﻣﻞ اﯾﻦ ژﻧﺮاﺗﻮر، ﻣﺴﺌﻠﻪ ﮐﻨﺘﺮل آن و ﺿﺮورت ﺣﻀﻮر ﯾﮏ ﮐﻨﺘﺮلﮐﻨﻨﺪه ﻣﻨﺎﺳﺐ و ﮐﺎرا ﺑﺮاي ﭘﺎﯾﺪارﺳﺎزي ژﻧﺮاﺗﻮر در ﻣﺤﺪوده ﺳﺮﻋﺖ ﮐﺎري و ﻧﯿﺰ ﺗﺎﻣﯿﻦ ﺳﺎﯾﺮ اﻟﺰاﻣﺎت ﻋﻤﻠﮑﺮد دﯾﻨﺎﻣﯿﮑﯽ و ﺣﺎﻟﺖ ﻣﺎﻧﺪﮔﺎر اﺳﺖ. ﻟﺬا، در اﯾﻦ ﻣﻘﺎﻟﻪ ﯾﮏ ﻃﺮح ﮐﻨﺘﺮل ﺑﺮداري ﺟﺎﻣﻊ ﻣﺒﺘﻨﯽ ﺑﺮ روشﻫﺎي ﮐﻨﺘﺮل ﻏﯿﺮﺧﻄﯽ اراﺋﻪ ﻣﯽﺷﻮد. ﺑﺮ اﯾﻦ اﺳﺎس وﻇﯿﻔﻪ ﮐﻨﺘﺮل ﺳﺮﻋﺖ ژﻧﺮاﺗﻮر ﺑﺮ ﻋﻬﺪه ﮐﻨﺘﺮل ﻣﺪل ﻣﺮﺟﻊ ﻗﺮار ﻣﯽﮔﯿﺮد. ﻫﻤﭽﻨﯿﻦ ﺑﺮاي ﮐﻨﺘﺮل ﻫﻤﺰﻣﺎن ﺗﻮان راﮐﺘﯿﻮ و ﮔﺸﺘﺎور از روش ﮐﻨﺘﺮﻟﯽ ﻣﺒﺘﻨﯽ ﺑﺮ ﺗﺮﮐﯿﺐ ﺣﺎﻟﺖ ﻟﻐﺰﺷﯽ و ﻣﺘﻨﺎﺳﺐ-اﻧﺘﮕﺮالﮔﯿﺮ )PI( اﺳﺘﻔﺎده ﻣﯽﺷﻮد. ﻧﺘﺎﯾﺞ ﺷﺒﯿﻪﺳﺎزي ﻧﺸﺎن ﻣﯽدﻫﺪ ﮐﻪ ﺑﺎ اﺳﺘﻔﺎده از ﺳﺎﺧﺘﺎر ﮐﻨﺘﺮﻟﯽ ﻣﺰﺑﻮر، ﭘﺎﺳﺦ دﯾﻨﺎﻣﯿﮑﯽ ﺳﯿﺴﺘﻢ در ﺷﺮاﯾﻂ ﻣﺨﺘﻠﻒ ﻣﺎﻧﻨﺪ ﺗﻐﯿﯿﺮ ﺗﻮان ﻣﮑﺎﻧﯿﮑﯽ ورودي و ﺳﺮﻋﺖ ﻣﺮﺟﻊ ﺑﺴﯿﺎر ﻣﻨﺎﺳﺐﺗﺮ از زﻣﺎﻧﯽ اﺳﺖ ﮐﻪ از ﮐﻨﺘﺮلﮐﻨﻨﺪه ﺧﻄﯽ اﺳﺘﻔﺎده ﻣﯽﺷﻮد.

The brushless doubly fed induction generator (BDFIG) is one of the main members of doubly fed electrical generators which has come close to commercialization in recent years. This generator has some of outstanding features of squirrel cage induction generator and conventional synchronous generator, and at the same time, it requires a partially rated converter. One of the major challenges in the evolution of this generator is the problem of controlling it and the necessity of having a suitable and efficient controller to stabilize the generator in the operating speed range. Therefore, in this paper, a comprehensive vector control scheme based on nonlinear control methods is proposed. Accordingly, a reference model controller fulfills the control of rotor speed. In addition, for simultaneous control of reactive power and torque, a combined approach based on sliding mode and PI controllers are used. The simulation results show in presence of the mentioned control structure, the dynamic response of system in different conditions such as change of mechanical input power and reference speed variation is much more appropriate than when a linear controller is used.