| 1 | Sensored and sensorless scalar-control strategy of a wind-driven BDFRG for maximum wind-power extraction显示文摘This paper presents a scalar volt per hertz(V/f)control technique for maximum power tracking of a grid-connected wind-driven brushless doubly fed reluctance generator(BDFRG).The proposed generator has two stator windings namely;power winding,directly connected to the grid and control winding,connected to the grid through a bi-directional converter.In order to enhance the performance of the proposed scalar-control strategy,a soft starting method is suggested to avoid the over-current of the bi-directional converter.Moreover,the capability of generator speed estimation for sensorless control is also studied.The capability of the proposed scalar-control technique is validated using a sample of simulation results.In addition,the presented simulation results ensure the effectiveness of the proposed control strategy for maximum wind-power extraction under windspeed variations.Furthermore,the results show that the estimated generator speed is in a good accordance with the actual generator speed which supports sensorless control capability. | Mohamed G.Mousa S.M.Allam Essam M.Rashad | 2018 | Journal of Control and Decision2018，5，2： | 1 |
| 2 | Design and Implementation of Wheel Chair Control System Using Particle Swarm Algorithm显示文摘About 10–20%of every country’s population is disable.There are at least 650 million people with a kind of disability worldwide.Assistance and support are perquisites for many handicap people for participating in society.Electric powered wheelchairs provide efficient mobility to motor impaired persons.In this paper a smart controller of a wheel chair mobile robot using Particle Swarm Optimization Proportional controller(PSO-P)was proposed where(PSO)algorithm was utilized to tune the proportional controller’s gains for each axis.Aiming to improve wheelchair tracking trajectory,a kinematic model of a robot with linear and angular velocities parameters was developed.The controller performance was examined using the system parameters with respect to trajectory references.A simulation of the proposed controller showed good correlation of the trajectory track under different loading conditions. | G.Mousa Amr Almaddah Ayman A.Aly | 2021 | Computers, Materials & Continua2021，，2： | 0 |
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