TY - JOUR JF - joc-isice JO - JoC VL - 9 IS - 1 PY - 2015 Y1 - 2015/6/01 TI - A Nonlinear Control Design for Variable Speed Pumped Storage Power Plants in order to Improve Fault Ride-Through Capability in Motor Mode TT - طراحی کنترل کننده غیرخطی در نیروگاه های تلمبه ذخیره ای دور متغیر جهت بهبود قابلیت گذر از خطا در مد موتوری N2 - In this article, a nonlinear controller is designed for a pumped storage hydropower (PSH) based on doubly fed induction machine (DFIM) in the motor mode. The main controller of a variable speed PSH consists of three separate parts: motor side converter, grid side converter and pump-turbine guide vanes which are designed via stator voltage oriented vector control. Using the power electronics in DFIM-based application can be made the fault ride through issues. In industrial applications, the variable speed PSH uses a hardware protection, i.e. crowbar or dc link brake chopper, in order to maintain the connectivity to the grid during a fault. In this article, however, the motor side controller is modified by an effective input signal to be added to decoupled d-axis inner loop. It is shown that the proposed controller not only eliminates the need of conventional protection, but also improves the transient responses. Furthermore, it is demonstrated using real-time simulation in Matlab/Simulink that the credibility of the proposed controller SP - 35 EP - 46 AU - Alizadeh Bidgoli, Mohsen AU - bathaee, mohammad taghi AD - K.N.Toosi university KW - Fault ride through KW - vector control KW - nonlinear control KW - doubly fed induction motor KW - Variable speed pumped storage power plant UR - http://joc.kntu.ac.ir/article-1-203-en.html ER -