The present disclosure generally relates to a system and methods for managing and controlling emissions produced by a vehicle and/or powertrain which includes one or more power sources selected from a fuel cell, a fuel cell stack, a battery, and combinations thereof, a processor, one or more inputs, a controller, and one or more emission control devices.

A marine propulsion system includes a marine propulsion device, a battery, and a controller. The marine propulsion device includes a propeller shaft, an engine, and an electric motor. The marine propulsion device transmits mechanical power from at least one of the engine and the electric motor to the propeller shaft. The battery supplies electric power to the electric motor. The controller controls the marine propulsion device such that the marine propulsion device is switchable among drive modes including a first drive mode and a second drive mode. In the first drive mode, mechanical power is transmitted from only the engine to the propeller shaft. In the second drive mode, mechanical power is transmitted from only the electric motor to the propeller shaft when the engine is in an idling state.

A watercraft and associated pedal drive system are provided. The pedal drive system allows for unassisted manual pedaling to provide thrust to the watercraft. The pedal drive system also provides on demand pedal assistance of varying levels via an assist drive train having an electric motor to supplement the manual pedal force input provided by a user at the pedals of pedal drive system.

An electric power system includes a direct voltage rail (101), battery elements (102-104) connected with supply-converters (105-107) to the direct voltage rail, and load-converters (111-113) for converting direct voltage of the direct voltage rail into voltages suitable for loads of the electric power system, where the supply-converters and the load-converters are connected with over-current protectors (108-110, 114-116) to the direct voltage rail. The electric power system further includes a capacitor system (117) connected to the direct voltage rail and capable of supplying fault current for switching an over-current protector into a non-conductive state in response to a fault causing a voltage drop at an electrical node connected to the direct voltage rail via the over-current protector. The capacitor system may include one or more high-capacitance electric double layer capacitors. The fault current available from the capacitor system enables a selective protection.

A system including a drone or unmanned vehicle configured to perform surveillance of a premises. The drone surveillance includes autonomous navigation and/or remote or optional piloting around the premises. The drone includes a controller coupled to a plurality of sensors configured to collect drone data and security data at the premises, wherein the controller is configured to generate control data for the drone and the premises using the drone data and the security data. A remote device coupled to the drone includes a user interface configured to present the drone data, the security data, and/or the control data.

An electric drive-train for a ship includes a first generator having a rotatable shaft structured to be driven by a first prime mover and an output providing a voltage; a second generator having a rotatable shaft structured to be driven by a second prime mover and an output providing a voltage; an electric machine including a rotatable shaft structured to drive a propeller; a first power electronic converter electrically interconnected with the output of the first generator and structured to power the electric machine; and a second power electronic converter electrically interconnected with the output of the second generator and structured to power the electric machine. A support structure replaces a reduction gear box and supports the first generator, the second generator, the electric machine, the first power electronic converter, and the second power electronic converter.

A ship propulsion device (1) is adapted to rotate a propeller (20) to propel a ship (2). In a case where the rotating speed of the propeller (20) is less than a predetermined rotating speed, a low-output sub-motor (M2) is controlled and rotationally driven by a small-capacity general-purpose inverter (24), and the rotational driving is transmitted to the propeller (20) so as to rotate the propeller. In that case, in a drive system of a main motor (M1), rotation is not transmitted to a slip clutch (23) or an input shaft (7) by cutting off an on-off clutch (8). In a case where the rotating speed of the propeller (20) becomes equal to or more than the predetermined rotating speed, a driving source is switched from the sub-motor (M2) to the main motor (M1) so as to couple the on-off clutch (8), and the rotating speed of the main motor (M1) is controlled by the slip clutch (23) and transmitted to the propeller (20) so as to rotate the propeller (20).

A system for extraction of a pool cleaning robot from a pool, the system may include a pool cleaning robot interface that is arranged to be coupled to a pool cleaning robot during an exit process during which the pool cleaning robot is extracted from the pool; and a pool cleaning robot manipulator that is coupled to the pool cleaning robot interface, wherein the pool cleaning robot manipulator is arranged to move the pool cleaning robot interface between a first and second portion; wherein when the pool cleaning robot interface is at the first position and is coupled to the pool cleaning robot, the pool cleaning robot is within the pool; wherein when the pool cleaning robot interface is at the second position and is coupled to the pool cleaning robot, the pool cleaning robot is positioned outside the pool.

Disclosed is a submarine provided with lithium-ion battery-based electricity storage, assuming the form of associated individual storage elements (2, 3, 4), each element (2, 3, 4) being provided with an electronic connecting and operation management card (5, 6, 7), in which: the associated individual storage elements (2, 3, 4) are arranged in a row; each electronic card (5, 6, 7) of an element of a row (1) is mechanically and electrically connected, at its ends (8, 9), to the electronic cards (5, 6, 7) of the row (1) that are its closest neighbors, to form a strip of cards (1a) for this row (1); this strip of cards (1a) can be manipulated by an operator from at least one of its ends and is able to slide relative to the storage elements (2, 3, 4) of the row (1).

A marine vessel may include a propulsion system and a rechargeable energy storage system inclusive of at least one rechargeable energy source configured to supply power to the propulsion system. The marine vessel may further include a vessel-side inductive charge component in electrical communication with the rechargeable energy storage system, and be configured to inductively couple with a platform-side inductive charge component positioned at a marine-based platform. The platform-side inductive charge component may be electrically coupled to a power generator that generates electrical power. A moveable structure (e.g., gangplank or crane) may be coupled to the marine vessel on which the vessel-side inductive charge component is positioned to enable the moveable structure to be moveably positioned to wirelessly (e.g., inductively) couple the vessel-side inductive charge component with the platform-side charge component that is positioned at the marine-based platform, thereby causing the rechargeable energy storage device to be recharged.