Marine propulsion – Electric drive for propelling means
Patent
1991-09-17
1993-08-03
Swinehart, Edwin L.
Marine propulsion
Electric drive for propelling means
B60L 1102
Patent
active
052323846
ABSTRACT:
Motion drive of underwater or abovewater ship where mobile parts of propulsion installation (screw-propellers) are eliminated. This allows to achieve high specific compactness and high efficiency of the drive. Different energy sources (kinematic and static) can be used simultaneously or alternatively for activation. This is realized by automatically controlled in time accumulation of high-voltage electric energy on capacitors from different energy sources and their following discharges in aqueous medium of working cylinders mounted on the ship below waterline and made of high structural strength material to withstand high pressure hydraulic impacts. Voltage, current and frequency of these discharges are controlled and regulated by control system. Electrohydraulic phenomenon occurs due to these high-voltage discharges. A direct conversion of electric energy to mechanic energy, specific for this phenomenon, provides controlled reactive movement of the ship. Control system controls low-to-high voltage converters, bank of capacitors for storing high voltage electrical energy, charge and discharge distributors for controlled commutation for charging and discharging capacitors between electrodes placed within working cylinders, flow of water to the working cylinders. Water within cylindeders after each discharge is propelled out from the member driving the ship in direction opposite to a direction of propelled water, then after discharge the cylinder is being filled with water again.
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