A decelerating apparatus includes a brake member, primary and secondary permanent magnets and pole pieces. The primary permanent magnets are arranged in a circumferential direction to face an inner or outer peripheral surface of the brake member with a gap in between. Each of the primary permanent magnets has two opposite magnetic poles arranged in a radial direction. The secondary permanent magnets and the pole pieces are placed in the gap and arranged in the circumferential direction. Each of the secondary permanent magnets has two opposite magnetic poles arranged in the circumferential direction. Each of the pole pieces is positioned between adjacent secondary permanent magnets. Magnetic pole arrangements of adjacent primary permanent magnets are opposite to each other. Magnetic pole arrangements of adjacent secondary permanent magnets are opposite to each other. Each of the secondary permanent magnets has a trapezoidal cross-sectional shape including an upper base and a lower base.

An electromechanical drive system for a mechanical power load. The system includes an electric motor connectable to an electric power source, a first transmission connected at one side with a first end of the shaft of the electric motor and connectable at the other end with a load, an electric power generator, and a second transmission connected at one side with a second end of the shaft of the electric motor, which extends in a direction opposite to that of the first end of the shaft of the electric motor, and which is connected at the other side with the electric power generator, wherein the electric power generator is electrically connectable via a switch with a power source and the electric motor, such that the electric current from the power generator can be directed either to electric power source or to an electric motor, with which charging of the electric power source is achieved when a need of the load for mechanical power is reduced.

An electromechanical drive system for a mechanical power load. The system includes an electric motor connectable to an electric power source, a first transmission connected at one side with a first end of the shaft of the electric motor and connectable at the other end with a load, an electric power generator, and a second transmission connected at one side with a second end of the shaft of the electric motor, which extends in a direction opposite to that of the first end of the shaft of the electric motor, and which is connected at the other side with the electric power generator, wherein the electric power generator is electrically connectable via a switch with a power source and the electric motor, such that the electric current from the power generator can be directed either to electric power source or to an electric motor, with which charging of the electric power source is achieved when a need of the load for mechanical power is reduced.

A method of manufacturing a magnetic pole piece includes molding a magnetic body having an outer wall and an inner wall extending between a first end and a second end, and a trim cap disposed at the first end. The method further includes fixing a non-magnetic isolator to the magnetic body between the outer wall and the inner wall and removing the trim cap.

A verge-cutting mower device (20, 30), for example for maintaining roadside verges, has at least one frame (16) intended to be mounted on an automotive agricultural machine (10) and on which there is mounted a piece of cutting/grinding equipment (20) intended to mow or grind plants. The cutting/grinding equipment (20) is actuated using an electric motor (33).

A verge-cutting mower device (20, 30), for example for maintaining roadside verges, has at least one frame (16) intended to be mounted on an automotive agricultural machine (10) and on which there is mounted a piece of cutting/grinding equipment (20) intended to mow or grind plants. The cutting/grinding equipment (20) is actuated using an electric motor (33).

A method of manufacturing a magnetic pole piece includes molding a magnetic body having an outer wall and an inner wall extending between a first end and a second end, and a trim cap disposed at the first end. The method further includes fixing a non-magnetic isolator to the magnetic body between the outer wall and the inner wall and removing the trim cap.

The magnetic gear includes a magnetic force generator (8), a driving shaft (1), a driven shaft (2) and a gear carrier (3) which are magnetically coupled in movement to one another. Only one magnetic force generator (8) is provided, which one magnetic force generator (8) has a north-south alignment that runs in the axis direction (111) of a shaft (1, 2) or parallel to this.

The magnetic gear includes a magnetic force generator (8), a driving shaft (1), a driven shaft (2) and a gear carrier (3) which are magnetically coupled in movement to one another. Only one magnetic force generator (8) is provided, which one magnetic force generator (8) has a north-south alignment that runs in the axis direction (111) of a shaft (1, 2) or parallel to this.

Methods and systems for operating a hybrid electric aircraft propulsion system. The method comprises providing alternating current (AC) electric power to a first electric motor to drive a first rotating propulsor, providing the first electric motor with AC electric power from at least one motor inverter operatively coupled to a direct current (DC) power source, detecting a failure in a path to the first electric motor, and selectively rearranging a first switching arrangement between the generator, the at least one motor inverter, and the first electric motor.