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Underwater Investigations and Robotics. 2016. № 1 (21). P. 24-30.
IMPROVING THE EFFICIENCY CONTACTLESS TRANSMISSION
ELECTRICITY ON AUTONOMOUS UNDERWATER VEHICLE MODELS,
ALGORITHMS AND SOFTWARE
Gerasimov V.A., Filozhenko A.Y.
Institute for Marine Technology Problems FEB RAS
5a Sukhanov Str., Vladivostok, 690091. Ph.: +7 (902) 522-38-24. Е-mail: [email protected]
Kraskovskiy M.V., Kuvshinov G.E.,
Far Eastern Federal University
Office, Bldg. 10, Ajax St., Vladivostok, 690922 Russky Island, Russia
Ph.: +7 (950) 293-71-11. Е-mail: [email protected]
ABSTRACT
The structure of power supply system for autonomous underwater vehicle is analyzed.
Topicality of the use of contactless electrical power transmission method is detailed. Specific
character of this method is described. It is connected with the use of high-frequency transformer. Its
primary and secondary windings are separated by non-magnetic clearance causing a low magnetic
coupling ratio and significant magnetization current. The problems of inverter output current decrease
and heat loss reduction in its transistor switches are investigated. Unloading method of power
switches of autonomous voltage inverter due to the inclusion of a serial resonance circuit in parallel
with the primary winding of the transformer is proposed. This solution promoted for three-fold
lowering of the current of inverter power switches and saving the transmission capacity. The results
of circuit simulation and experimental research of operating modes of the contactless power supply
system of autonomous underwater vehicle are presented. A resonant circuit connected at the output of
autonomous inverter was used. Good agreement simulation and experimental results is observed. The
relationship analysis between power of the reactive elements in the resonant circuit and inverter and
the relative resonant frequency determined by the ratio of own frequency of the resonant circuit to the
frequency of commutation of inverter switches is conducted. The approach to the formation of
compromise solution that allows determining the relative value of the resonant frequency and giving
recommendations on selection of the serial resonance circuit capacitor is proposed.
Keywords: contactless transmission electricity, autonomous voltage inverter, serial resonance
circuit, high frequency transformer, reducing current of the inverter, reduction of heat loss transistors,
increase efficiency, capacitor selection.
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