A drive system for a ship, including at least two propulsion units, each propulsion unit having a propeller and a drive engine with an above-water transmission connected downstream for driving the propeller. Each drive engine can be connected to and disconnected from the associated above-water transmission with a clutch and between the above-water transmissions, a switchable drive train is provided by which in one switching state, the above-water transmissions can be coupled and driven jointly and in another switching state, they can be decoupled from each other.

The present disclosure is directed to an electric generator and motor transmission system that is capable of operating with high energy, wide operating range and extremely variable torque and RPM conditions. In accordance with various embodiments, the disclosed system is operable to: dynamically change the output size of the motor/generator by modularly engaging and disengaging rotor/stator sets as power demands increase or decrease; activate one stator or another within the rotor/stator sets as torque/RPM or amperage/voltage requirements change; and/or change from parallel to series winding configurations or the reverse through sets of 2, 4, 6 or more parallel, three-phase, non-twisted coil windings with switchable separated center tap to efficiently meet torque/RPM or amperage/voltage requirements.

A motor/generator/transmission system includes: an axle; a stator ring having a plurality of stator coils disposed around the periphery of the stator ring, wherein each phase of the plurality of stator coils includes a respective set of multiple parallel non-twisted wires separated at the center tap with electronic switches for connecting the parallel non-twisted wires of each phase of the stator coils all in series, all in parallel, or in a combination of series and parallel; a rotor support structure coupled to the axle; a first rotor ring and a second rotor ring each having an axis of rotation coincident with the axis of rotation of the axle, at least one of the first rotor ring or the second rotor ring being slidably coupled to the rotor support structure and configured to translate along the rotor support structure in a first axial direction or in a second axial direction.

Embodiments of the disclosure are drawn to apparatuses and methods for packaging and distributing a marine energy storage system. Battery packs including one or more battery cells and a compliant layer enclosed in a sealed housing are disclosed. Vessel hulls with battery packs structurally integrated are disclosed. Vessel hulls with battery packs mounted to an inner surface of an outer hull are disclosed. Vessel hulls including compartments for inserting battery packs are disclosed. Vessel hulls including battery packs mounted in a ballast of the hull are disclosed.

A drive system for a ship, including at least two propulsion units, each propulsion unit having a propeller and a drive engine with an above-water transmission connected downstream for driving the propeller. Each drive engine can be connected to and disconnected from the associated above-water transmission with a clutch and between the above-water transmissions, a switchable drive train is provided by which in one switching state, the above-water transmissions can be coupled and driven jointly and in another switching state, they can be decoupled from each other.

According to one aspect of the present disclosure, a floating vessel, particularly an LNG carrier, is described. The floating vessel comprises: a gas turbine engine-generator assembly configured to generate a first electrical power and to supply the first electrical power to an electrical distribution system; a steam turbine engine-generator assembly configured to generate a second electrical power and to supply the second electrical power to the electrical distribution system; a propulsion system configured to propel the floating vessel using a propulsion power supplied from the electrical distribution system, wherein the gas turbine engine-generator assembly is configured to generate a maximum first electrical power between 10 MW and 18 MW, particularly between 14 MW and 15 MW at 25 C. According to a further aspect, a method of operating a floating vessel is described.

An object of the present disclosure is to provide a gas-electric parallel-serial hybrid marine power train system with LNG cooling, including a gas engine, an electric generator, a motor, a natural gas storage supplier. The gas engine is connected to the shaft belt motor through a gearbox, the motor is connected to the gearbox through a clutch, propellers are connected to the motor, and an engine cooling system and a fuel cell cooling system are connected to an LNG vaporization heat exchange apparatus; the electrical energy sources are the fuel cell, the electric generator and a storage battery. The arrangement of multiple power sources according to the present disclosure can meet ship requirements under various environments and circumstances, improve operating efficiencies of the gas engine, the shaft belt motor and the electric motor.

A transmission for a propulsion system. The propulsion system includes a power unit, a power transfer system, and a propulsion element. The transmission incorporates a summation, a propulsion output, and a power transfer transmission system, which receives power from the power unit and/or the power transfer system of the propulsion system. The power transfer transmission system includes a propulsion output transmission and a summation transmission, where the propulsion output transmission receives power from the summation transmission and directs the power to the propulsion element. The power transfer transmission system provides for transfer of power between the power transfer system and the summation transmission. The power transfer transmission system includes a power transfer shaft and a power transfer coupler and selectively connects the power transfer shaft to a propulsion outlet shaft, such that power is transferred directly from the power transfer system to the propulsion output transmission.

A hybrid electrical and mechanical ship propulsion and electric power system, includes a first mechanical power plant configured to drive a first propeller via a first shaft. There is a second electrical power plant configured to drive a second propeller via a second shaft. The second electrical power plant includes HTS generators and a high temperature superconductor (HTS) motor interconnected to the second shaft. There is a first electrical network to which the HTS motor is connected in order to energize the HTS motor to drive the second propeller via the second shaft.

Provided are a ship and a power management method of the ship. The ship comprises: a power grid; at least one generator that is connected to the power grid and supplies electricity to the power grid; a high-capacity battery connected to the power grid, and charged by receiving the electricity from the power grid or discharged to supply power to the power grid; a plurality of load components connected to the power grid; and a controller for receiving generator load information from the at least one generator, sensing a voltage of the power grid to calculate a current load and an average load, and controlling the generator to bear the average load and the high-capacity battery to bear a difference load between the current load and the average load.