FIELD: electricity.
SUBSTANCE: device includes first propeller screw driven by rotating power aggregate and second propeller screw driven by an AC motor. Second propeller screw rotates in direction opposite to the first propeller screw. AC generator is driven by rotating power aggregate and has electric connection to the AC motor. Rotation speed of the first propeller screw is 95-150% of rotation speed of the first propeller screw. AC motor and AC generator have the same electric frequency, AC generator has 2 to 40 poles, and AC motor has 2 to 40 poles. AC generator to AC motor pole number ratio is 0.05 to 20.
EFFECT: profitability of device providing electric power at a ship or sea vessel.
14 cl, 9 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PROPULSION SYSTEM | 2012 |
|
RU2553530C2 |
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|
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