Linear electric actuator of a sectional plane shut-off of hydrotechnical structures

Abstract The sectional design of a flat shutter with an electric drive has lower energy characteristics and improved operational and technological indicators compared to the existing ones for hydraulic structures and channels. The use of linear asynchronous electric motors in linear electric drives allows to simplify the design and reduce material consumption. Modeling of linear induction motors with various designs of the secondary element is carried out on the basis of detailed equivalent circuits for electric and magnetic circuits. Coating a massive or serrated secondary element with a layer of non-magnetic material can increase the traction performance of a linear motor. Comparison of the results of numerical modeling and physical experiments of linear induction motors with various secondary element designs for a sectional flat shutter is the most effective shielded ferromagnetic secondary element.

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