Field orientation, with autonomous control of reactive power, using PI controller is the most widely used controlling method of doubly-fed induction generators (DFIG). This paper describes a method for separate control of active and reactive power of grid-connected DFIG using PI controller. Using MATLAB/SIMULINK software, the behavior of controller is evaluated during variation of wind speed. Simulation results represent the behavior of controller when facing the variations. This paper first explains the model of DFIG and the second part is explaining field oriented control of DFIG.
This paper investigates the application of the model predictive control (MPC) approach to control the speed of a permanent magnet synchronous motor (PMSM) drive system. The MPC is used to calculate the optimal control actions including system constraints. To alleviate computational effort and to reduce numerical problems, particularly in large prediction horizon, an exponentially weighted functional model predictive control (FMPC) is employed. In order to validate the effectiveness of the proposed FMPC scheme, the performance of the proposed controller is compared with a classical PI controller through simulation studies. Obtained results show that accurate tracking performance of the PMSM has been achieved.
These Today's intrusion detection systems (IDSs) are playing an essential part of any network security system. A challenging task in designing such IDSs is the ability of detecting the system attacks at a high speed and with an acceptable accuracy. In this work, an IDS system is proposed and designed with two keys of success; its neuro-architecture, and the FPGA-based implementation of this architecture. The neuro-architecture of the proposed system provides not only system's capability of detecting attacks that are not included in the training sets, but also fast decision due to the natural parallelism propriety of the neural networks. Also, the software implementation of the proposed system is explained. Further more, an FPGA-based implementation of the system is illustrated to provide an extra enhancement of system speed. Besides, the FPGA-based implementation provides an improved scope of boosting security over the software-based system.Index Terms-Network security, IDS, MLP, FPGA.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.