A drilling tool with power generation includes an outer housing and a driveshaft located at least partially within the outer housing and configured to rotate with respect to the outer housing via bearings located between the driveshaft and the outer housing. The drilling tool also includes an electromagnetic power generation device. The electromagnetic power generation device includes a coil and a magnet located within the housing. One of the coil and the magnet is coupled to the housing and the other is coupled to the driveshaft. Relative movement of the driveshaft with respect to the coil generates electrical power.

There is provided a combustion engine and an electric generator. The combustion engine comprises an engine housing, a cylindrical member configured to rotate about an axis within a cavity of the engine housing, a piston, and an engagement section for engaging the piston. The piston is mounted to the engine housing and the engagement section is mounted to the cylindrical member, or the piston is mounted to the cylindrical member and the engagement section is mounted to the engine housing, such that the piston and the engagement section periodically rotate past one another as the cylindrical member is rotated within the engine housing. The piston engages the engagement section as they rotate past one another, the engagement forcing the piston to compress gases in a combustion chamber, which fire to drive the rotation of the cylindrical member. The electric generator may be driven by the combustion engine.

An electrical power system is provided. The electrical power system involves a battery powered motor which in turn generates electricity using a primary generator and a secondary generator. The secondary generator provides a recycle electricity to the battery, while the primary generator provides an electrical output for powering electrical devices.

An electrical generator is provided. The electrical generator can include a generator, an electric motor, and a battery. The generator has a rotatable shaft and stationary component and be operatively coupled via a drive belt to the motor, which provides torque to the rotatable shaft of the generator The battery is operatively coupled to the motor. The generator can be operatively coupled to a utility grid via a transformer/invertor that can import current from the utility grid to charge the battery when the utility grid is operating and export current from the generator to a grid connector when the utility grid is not operating. The current generated from a cooldown, powerup, or an excess of power from the generator can be stored in a current storage tank, which can include a sensor configured to signal the cooldown of the generator on detecting of load.

A rotor core lamination is provided. The rotor core lamination includes a plurality of salient poles. Each of the salient poles includes: a pole body having a central axis in a radial direction of the rotor core lamination; and a pole shoe extending radially outward from the pole body, wherein the pole shoe has a pole shoe arc, and a central point of the pole shoe arc is offset from the central axis.

An object of the present invention is to provide a drive system that is provided with an induction generator having a primary winding including a main winding and an auxiliary winding and a secondary conductor, can vary the voltage of the main winding, and can increase the maximum output power of the auxiliary winding. Therefore, provided is a drive system, which is provided with an induction generator having a primary winding including a main winding and an auxiliary winding and a secondary conductor, including: a starting battery that starts the induction generator; a traction inverter that drives a traction motor; an auxiliary device inverter that drives an auxiliary device motor; a rectifier the input side of which is connected to the main winding and the output side of which is connected to the traction inverter; and a power generation inverter the output side of which is connected to the auxiliary winding and the input side of which is connected to the auxiliary device inverter and the starting battery.

A flight controller of a flight vehicle includes an electric motor control unit for controlling each of a plurality of electric motors, and in a case where the plurality of electric motors are driven by electric power stored in a battery or in a case where the battery is charged with electric power generated by a generator, the electric motor control unit controls the plurality of electric motors in accordance with the state of the battery.

A sensor module may be mounted in an electronic device including a rotating body rotatably arranged inside a housing. The sensor module may include a stator fixed in the housing; an energy harvester including a rotor mounted in the rotating body, at a position to at least partially face the stator; and a sensor arranged inside the rotating body together with the rotor, wherein, as the rotating body rotates, the rotor may be configured to rotate about the stator and generate an induced current and supply same to the sensor. The sensor may be configured to detect, using power based on the induced current, environmental information of the inside of the rotating body or operating state information of the rotating body.

Systems methods and apparatuses for conversion of kinetic energy, which may include: a sail element; a mast; piston device(s) each comprising a piston housing and a piston; movable element(s) connectable to an edge of each piston; and a transmission subsystem movably connectable to the mast and to the movable element(s). The moveable element(s) and piston(s) are movable along a slopped linear path. Clockwise and/or counterclockwise rotations of the mast, caused by wind, are tranlatable into linear movements of the moveable element(s) and the piston(s), in a first linear trajectory, where the weight of the moveable element(s) causes opposite linear movement of the moveable element(s) and piston(s) in a second opposite linear trajectory, which causes reciprocal movements of the piston(s) causing fluid pressure by emptying and filling of a fluid therefrom and thereto. The mechanical apparatus can connect to a power generation subsystem, configured for conversion of fluid pressure into electrical power.

An electric generator having a rotor with permanent magnets, configured for rotating about a rotation axis; a stator having at least one magnetic yoke with arms extending axially inside or outside of the rotor so as to be adjacent to a radial inner or outer side, respectively, of the rotor; wherein the arms of the at least one magnetic yoke are circumferentially distributed so as to form a slot between each pair of adjacent arms, each slot and each arm showing a width. The widths of the arms and/or the widths of the slots have different values distributed along the circumference. The invention is also directed to a valve having the electric generator equipped with a turbine wheel for being driven by a flow of gas in the valve.