5 results about "Primary permanent" patented technology

This invention provides a permanent magnet synchronous motor rotor and a permanent magnet motor. The permanent magnet synchronous motor rotor includes a rotor core and permanent magnets. The permanent magnets include a primary permanent magnet and a secondary permanent magnet connected to each other. The rotor includes multiple magnetic poles, with a magnetic pole boundary line between two adjacent magnetic poles. The center line of the primary permanent magnet is inclined with respect to its nearest magnetic pole boundary line, forming a non-zero angle A. The center line of the secondary permanent magnet is also inclined with respect to its nearest magnetic pole boundary line, forming a non-zero angle M. M and A satisfy the following relationship: 0.3 ≤ M / A. According to this invention, the angle between the primary and secondary permanent magnets and the armature magnetic field lines can be increased, reducing the demagnetization rate of the primary and secondary permanent magnets, thereby improving the motor's anti-demagnetization capability. Simultaneously, it increases the magnetic flux supplied by the primary and secondary permanent magnets to the air gap, increasing the motor's flux linkage, reducing the motor's operating current, reducing copper losses, and improving motor efficiency.

A relay is disclosed to enhance a retention force. The relay includes a yoke iron, a top cover, a static iron core, a primary permanent magnet group, a secondary permanent magnet group, a first movable iron core, and a second movable iron core. The top cover is provided with a first opening group. The first opening group is provided at a position at which the top cover is configured to be in contact with the first movable iron core. The first opening group includes at least one first sub-opening. The yoke iron is provided with a second opening group, the second opening group is provided at a position at which the yoke iron is configured to be in contact with the second movable iron core, and the second opening group includes at least one second sub-opening.

An electronic cylinder lock (1) comprises a rotor (2), an actuation cam (3) for operating a lock opening mechanism, and a latch element (4) slidably supported in the rotor (2) between the rotor (2) and the actuation cam (3) between a latched position and an unlatched position, within which rotor (2) a mobile actuator for the latch element (4) is housed, the mobile actuator comprises an electric motor, a rotatable element (5) which can be driven to rotate by the electric motor, and magnetic coupling means between the rotatable element (5) and a sliding latch element (4), wherein the magnetic coupling means comprise at least one primary permanent magnet (6, 7) attached to the rotatable element (5) and at least one secondary permanent magnet (8, 9) attached to the sliding latch element (4).

The application discloses a low-tooth-groove primary permanent magnet linear motor and belongs to the technical field of motors. The application aims at the problem of high tooth groove force of the primary permanent magnet linear motor. The primary permanent magnet linear motor comprises a primary and a secondary, the primary comprises a primary iron core, an armature winding and permanent magnets, the armature winding is wound on the armature tooth of the primary iron core, the armature winding is composed of concentrated windings, the tooth top of the armature tooth is processed with a plurality of unequal-width split teeth to form an odd number of split tooth grooves, the permanent magnets are embedded in the split tooth grooves, the permanent magnet in the middle split tooth groove is higher than the permanent magnets in the split tooth grooves on the two sides, and the plurality of permanent magnets form a non-uniform air gap magnetic field between the primary and the secondary. The application is suitable for high-precision direct drive motion control occasions.

The invention relates to the technical field of wireless charging, and discloses a device for dynamically optimizing wireless charging efficiency in the running process of an AGV (Automatic Guided Vehicle), which comprises an AGV trolley, a receiving part is arranged on the AGV trolley, the receiving part comprises a secondary permanent magnet and a secondary coil wound on the secondary permanent magnet, the device is characterized by comprising a charging area, a transmitting part and a driving part are arranged under the ground of the charging area, the transmitting part comprises a primary permanent magnet, a primary coil wound on the primary permanent magnet and a transmitting circuit electrically connected with the primary coil, the driving part is used for driving the primary permanent magnet to rotate and enabling the plane of the primary coil to be parallel to the plane of a secondary coil, and the plane of the secondary coil is parallel to a chassis of the AGV; the front end of the charging area is provided with an image sensor higher than the ground of the charging area, the image sensor is used for detecting the inclination angle between the AGV chassis and the ground of the charging area, and the driving part, the transmitting circuit and the image sensor are electrically connected with the controller.