SHIP SHAFT-GENERATOR PLANT Russian patent published in 2014 - IPC B63H23/24 B63H21/00 

FIELD: motors and pumps.

SUBSTANCE: invention relates to ship electric power plants with shaft generators and semiconductor frequency converter. Ship shaft generator plant comprises the main engine, disengaging coupling, shaft line, screw propeller, shaft generator, electric circuit, the first and second current sensors, input throttle, the frequency converter, the output throttle, LC-filter, the first and second circuit breakers, bus of ship electrical loads, an additional generator mechanically connected with an additional engine, capacitor accumulator of DC link with voltage sensor. Main engine, shaft generator and screw propeller are mounted on the shaft line coaxially. The rotor of shaft generator is mounted to the end of the shaft line, connected to the screw propeller. On the shaft of the main engine there is also the first shaft position sensor, and on the shaft line from the side of the screw propeller the second shaft position sensor is mounted in addition. Both shaft position sensors are connected to the control unit of torsional oscillations, which output is connected to the signal input of the mode selector.

EFFECT: increase in reliability and increase in time between overhauls is achieved by reducing the dynamic loads on the main engine and reduction of fatigue phenomena in the material of the shaft line.

3 cl, 1 dwg