自主水下航行器非接触电能传输系统中软开关电路的研究.doc


Research on Soft-switching Circuit of Contactless Power
Transmission System in Autonomous Underwater Vehicle#

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Abstract: In order to improve autonomous underwater vehicle’s activity and expand the scope of its
navigation, contactless power transmission technology has been widely spread in recent years. The
contactless power transmission system is loosely coupled coupler connection, making the transmission
efficiency of the system is greatly reduced. In this paper, we use soft-switching circuit to improve the
transmission efficiency of system. By investigating the passive lossless snubber circuit with
non-minimum voltage stress, this paper designs a novel passive lossless snubber circuit based on Buck
converter. The experiment results show that the designed circuit can reduce the switching losses
effectively and return the energy stored in the buffering process to power supply.
Key words: Contactless Power Transmission System;Soft-switching Circuit;non-minimum switch
voltage stress circuit
0 Introduction
With the popularization of autonomous underwater vehicle and enter the average field,
expanding the ability of the AUV system and its operation scope, improving its endurance ability
e the hot topics in the recent research. By analyzing the development status of autonomous
underwater vehicle in domestic and international, we can see the major factor which restricts its
endurance ability and operation time is energy problem [1-4].
The traditional way of power transmission needs electrical connections between power
supply system and load, so in a harsh environment power supply will be much limited. Contactless
power transmission system uses ic coupling for power transmission without any electrical
connection, so it is suitable for harsh environments which can be widely used[5-6]. This paper
researches on contactless power transmission system of autonomous underwater vehicle.
Contactless power transmission system is