Authors V.A. Gerasimov, M.V. Kraskovskiy, A.Yu. Filozhenko
Month, Year 01-02, 2017 @en
Index UDC 621.31
Abstract The structure are determined the contactless power transmission system on board the autonomous unmanned underwater vehicle for charging its batteries at underwater basing. The advantages are noted of such a charge method and the features are shown a modes of operation of an autonomous of the inverter and high-frequency transformer, which is designed with multiple primary and secondary parts. The presence of a non-magnetic gap between the windings is a consequence of the feature design and leads to increased component of the magnetizing current of the transformer and the increased output current of the inverter. The task of increasing the effectiveness of the contactless power transmission system by current discharge transistors autonomous inverter due to the compensation of inductive component of its output current. The known technical solutions are considered and substantiated application to the task serial resonance circuit of the inductor and a capacitor connected in parallel of the primary winding of the transformer. Mathematical modeling of systems with connected resonant circuit is done and identified recommendations on the choice of parameters and operating modes, resulting in a solution of the task. Analysis of signal diagrams obtained by mathematical modeling, allowed to formulating requirements to ensure a "soft switch" as when turned on, and when you turn off the power of autonomous inverter keys. These solutions allow to minimize the power loss in inverter, reduce the heat of its elements and to improve the reliability and efficiency, which reduces the implementation of the battery charging apparatus for the desired time interval. It is shown that the use of resonance on the secondary side of the transformer allows you to distort the external characteristic of system in the desired direction, which can increase the level of electric power transmitted to the output while maintaining a minimal loss in the inverter. These theoretical conclusions are well supported by experiment.

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Keywords Autonomous unmanned underwater vehicle; contactless power transmission; autonomous voltage inverter; «soft switching»; series resonant circuit; parallel resonance.
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