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.

An electric propulsion system for a watercraft having at least one engine 4 with at least one propulsion device 3 and a power plant 1, whereby the power plant 1 has at least one solid oxide fuel cell 2 for the oxidation of fuel.

A novel emissions control watercraft (STAXcraft) solving a long-felt but unsolved need regarding disadvantages associated with prior-art emissions servicing watercraft, the disadvantages selected from the group, but not limited to, the use of tugboats, securing or mooring servicing watercraft to a serviced vessel, additional expenses and time-delays and inefficiencies of land-based approaches, increased toxic emissions, increased greenhouse gases (GHG) emissions, danger from falling cargo, tanker safety, alongside mooring in narrow channels preventing other OGV's to pass safely, and cargo tank emissions.

A marine propulsion system having an upper housing part, a pod, and a shank extending between the upper housing part and the pod. An underwater transmission having an input shaft and an output shaft is arranged in the pod and the input shaft is connected to a drive shaft that extends through the shank and is driven by an electric motor. The electric motor is mounted inside the shank and that surrounds the drive shaft.

The present invention relates to a system and method for controlling a power plant in a marine vessel. The system comprises at least one switchboard further comprising,a plurality of power plant members including, power suppliers such as power generators and energy storage elements, at least one consumer, and a Dynamic Hybrid Control unit comprising a measurement means for monitoring predetermined power plant and vessel related parameters,and a computational means for computing and predicting power and energy requirements in the power plant for varying time spans into the future. The system utilizes said power and energy requirements for pre-planning and allocating of power and energy between said power plant members for minimizing transients, including voltage, frequency variations in the power plant and load variations on the power generators.

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.

Provided is a ship propulsion system such that an increase in the size of a main engine can be minimized. The ship propulsion system is equipped with: main generators that supplies power to the interior of a ship; a power distribution unit that distributes the power of the main generators; a first electric motor that rotatably drives a first rotary shaft with the power input through the power distribution unit; a main propeller that rotates along with the first rotary shaft; a second electric motor that rotatably drives a second rotary shaft with the power input through the power distribution unit and a stern-side propeller that is disposed on the stern side of the main propeller and rotates along with the second rotary shaft.

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.

A system for providing marine propulsion is provided including an input shaft driven by a prime mover, a pinion gear coupled to the input shaft, a plurality of planet gears coupled to the pinion gear, a planet carrier having the plurality of planet gears rotationally mounted thereto, and a ring gear surrounding the planet gears and coupled thereto. The planet carrier and ring gear are coupled to internal and external output shafts that are coaxially aligned, which are coupled to aft and forward propulsor elements. The ring gear and planet carrier rotate in opposite directions to provide contra-rotating forward and aft propulsor elements. The ring gear and planet gear are each coupled to rotation altering devices that, when at least one is activated, the rotation of both the planet carrier and ring gear will be altered, thereby altering the rotation of the propulsor elements.