TJ699 : position control of a three phase induction motor , by using high order sliding mode technic
Thesis > Central Library of Shahrood University > Mechanical Engineering > MSc > 2019
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Abstarct: Nowadays, three-phase induction motors (IMs) are widely used in different electric drive systems including electric vehicles, ships, wind turbines, robotics, and etc. The reasons behind that are multiple advantages of these motors such as low torque ripple, low maintenance, low price, high reliability, simple and robust structure, which provide a better operation during mechanical and electrical faults. Therefore, designing a high-performance position control of the IM is a critical and challenging task, especially for robotic and wind energy applications. This study deals with position control of an electric drive baxsed on IM using field-oriented control (FOC) strategy. An improved FOC baxsed on high-order sliding mode technique is proposed for position control of the IM. FOC offers some advantages ranging from good dynamics, low torque ripple, steady state accuracy, etc. In contrast, this strategy is completely overshadowed by uncertainties and external disturbances such as load torque. The sliding-mode approach is an inherently robust technique, because it contains two operation mode known as reaching and sliding modes. After reaching mode, the system errors are located on sliding-mode, where their performance are only controlled by sliding surface. However, the conventional first-order sliding mode approach suffers from chattering problem. In this study, the chattering problem is relaxed by second-order super-twisting sliding-mode technique. The simulation results, obtained by MATLAB, verify the effectiveness of proposed technique.
Keywords:
#Position control #induction motor #FOC #sliding mode
Keeping place: Central Library of Shahrood University
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Keeping place: Central Library of Shahrood University
Visitor: