8 results about "Memory motor" patented technology

Power tools may include a housing. Power tools may include a motor assembly located within the housing, the motor assembly including a stator and a rotor, the stator having winding slots for receiving stator windings, and the rotor including a first magnet positioned at a first distance from a rotational center of the rotor and a second magnet positioned at a second distance from the rotational center of the rotor, wherein the first magnet is made of a rare-earth material and the second magnet is a low-coercivity magnet.

This invention discloses a magnetic field-enhanced parallel magnetic circuit variable flux memory motor, relating to the field of motor technology. The invention includes: a stator, comprising a stator core on which an armature winding is mounted; a hybrid permanent magnet rotor rotatably connected inside the stator; the hybrid permanent magnet rotor includes a rotor core on which multiple first permanent magnets are mounted, circumferentially distributed at the outer edge of the rotor core; second permanent magnets are mounted at both ends of each of the first permanent magnets, and the coercivity of the first permanent magnets is less than that of the second permanent magnets; multiple sector-shaped magnetic barriers are formed on the rotor core. This invention can significantly improve the load demagnetization resistance of low-coercivity permanent magnets, solving the problem of unstable operating point in parallel magnetic circuit variable flux memory motors, while maintaining the advantage of a wide magnetic adjustment range.

Systems are provided a rotor and magnets of a system of an electric machine that is a variable flux machine (VFM), such as a memory machine or memory motor (MM). The rotor of the system, comprising: a first set of magnets with higher coercivity integrated in at least a slot of the rotor to be arranged in a V-shape; and a second set of magnets with a lower coercivity, compared to the first set of magnets, the second set of magnets comprising at least a pair of magnets of different grades arranged in parallel in a radial slot of the rotor, where the first set of magnets forms a first magnetic layer and the second set of magnets forms a second magnetic layer of the rotor.

A system for shifting operation modes of Variable Flux Memory Motor (VFMM) from external inputs includes one or more VFMMs that convert electrical power to kinetic energy, the one or more VFMMs being configured to shift to any one of a plurality of operation modes, one or more man-machine interfaces that receive one or more external inputs from a user, the one or more external inputs being indicative of a target operation mode from the plurality of operation modes selected by the user, and a controller that shifts the operation mode of the one or more VFMMs to the target operation mode based on the one or more external inputs received from the one or more man-machine interfaces.

The application discloses an asymmetric axial electromagnetic force wave calculation method of an axial magnetic field permanent magnet memory motor, which mainly comprises the following steps: determining a solving coordinate system, respectively establishing Poisson equations and Laplace equations for the motor according to different solving regions of air gaps and Halbach array permanent magnets, solving static axial air gap magnetic flux density and circumferential air gap magnetic flux density according to boundary conditions that should be met by an open-circuit magnetic field analytical model on the basis of obtaining a Laplace general solution, calculating a Halbach array permanent magnet magnetic motive force during motor operation, respectively calculating a single-phase winding generated magnetic motive force and a three-phase winding generated magnetic motive force when the motor is supplied with three-phase symmetrical sinusoidal currents, and deducing and calculating a motor axial air gap magnetic field distribution formula in the case of considering air gap permeability. In the case of ignoring air gap saturation, axial electromagnetic force acting on a unit area of the axial magnetic field permanent magnet memory motor is calculated according to Maxwell tensor equations.

A system for multi-Variable Flux Memory Motor (VFMM) configuration includes a set of VFMMs connected to one or more drivetrains, the set of VFMMs being configured to convert kinetic energy of the one or more drivetrains into electric power or vice-versa. The system includes a controller configured to selectively change a magnetization state of one or more VFMMs from the set of VFMMs based on power requirements. The system changes the magnetization state of the set of VFMMs based on an optimal magnetization configuration determined for each power requirement.

An integrated synchronous motor charger includes a battery, and a synchronous motor having a set of phase windings, with each phase winding thereof having an open-ended winding configuration, the synchronous motor being electrically connected to the battery via a bidirectional inverter on a first end of at least one phase winding from the set of phase windings, and to a power source on a second end of the at least one phase winding. The synchronous motor is operably shiftable between a charging mode and a driving mode, the synchronous motor allowing electric power to flow bidirectionally between the power source and the battery in the charging mode, and allowing electric power to flow bidirectionally between the battery and the synchronous motor in the driving mode.