摘要:
A pumping set includes an electric motor, which exhibits a stator, a rotor and a can arranged between the stator and rotor, and at least one impeller linked with the rotor, wherein the electric motor has engine electronics designed for electronically commutating the electric motor, and the electric motor and commutation are configured in such a way that, in a state where the rotor chamber inside the can and/or the impeller is not filled with liquid, the rotor is shut down.
摘要:
A permanent magnet embedded rotor disposed coaxially with a cylindrical stator having a plurality of coils in the circumferential direction includes a rotor core that includes a columnar body made of a magnetic metal and a spacer made of a nonmagnetic material, and has an even number of insertion grooves, a cylindrical body that is made of a nonmagnetic metal with good electrical conductivity and externally inserted on the rotor core, permanent magnets embedded in the insertion grooves so that their N poles and S poles alternately come into contact with the inner peripheral surface of the cylindrical body, and a rotary shaft made of stainless steel fit into a rotation center of the rotor core.
摘要:
A magnetic motor is obtained which is free from pass-through current, and which can achieve high output torque, stable rotation and high efficiency. The motor comprises rotors 4, 5 having permanent magnets 12 and rotatably disposed around a rotating axis, a magnetic sensor 25 disposed at a periphery of the rotors and a plurality of electro-magnetic coils 10, and control means which controls electric current to the electro-magnetic coils 10 based on detection of magnetism from the permanent magnets 12 by means of the magnetic sensor 25. The rotor is equidistantly divided in a circumferential direction into a plurality of regions, the number of which is the same as that of the electro-magnetic coils 10. Each region comprises a portion wherein a plurality of permanent magnets 12 are disposed in a circumferential direction and a portion wherein no permanent magnets 12 are disposed. Each permanent magnet is disposed inclined against a radial line extending outwardly from the rotating axis. The current supply control means 30 switches the direction of the electric current to the electromagnetic coils based on the signal from the magnetic sensor and supplies electric current after a lapse of predetermined time from the detection of magnetism by means of the magnetic sensor.
摘要:
The electric pump comprises a stationary body which defines a chamber for the liquid and in which is mounted to rotate an impeller body provided with a series of blades. The inductor and the armature of a brushless electric motor are formed by two inserts which are embedded in the material of the two bodies during the corresponding moulding thereof. The armature is formed by a series of permanent magnets mounted on a ring of ferromagnetic material and it can be disposed in alignment with the blades of the impeller body.
摘要:
A rotor for small motors, or generators, having circumferentially arranged segmental poles which extend over the entire axial length of the rotor can be fabricated by molding a pair of elements from particulate magnetic material of high coercivity with a binder in the shape of identical crown gears; the rotor being completed by arranging the elements on a shaft with the toothed portions facing each other in interfitting engagement. Other modifications are disclosed in which the pole pieces may be formed separately from, or integrally with, a radial pole carrier, and the pole carrier may be in the shape of a spool with the segmental pole pieces assembled thereon.
摘要:
A rotor of a high-speed electric machine comprises a shaft 1, a magnetic ring 2 enclosing the shaft 1, a retaining ring 3, and permanent magnets 6 sisposed between the retaining ring 3 and the magnetic ring 2. The retaining ring 3 is secured to the shaft 1 by couplers, and a clearance 7 is provided between the permanent magnets 6 attached to the inside surface 5 of the retaining ring 3 and the magnetic ring 2.
摘要:
An electric motor having low vibration and/or noise comprises a rotor or stator comprising permanent magnets each comprising at least two pole pairs, with an internal flux gap within the permanent magnets between adjacent internal pole pairs. The internal flux gap between the internal pole pairs may be similar to an external pole to pole physical spacing between adjacent poles of adjacent magnets. The motor is suitable for use in for example a laundry washing machine or dryer or washer-dryer.
摘要:
A permanent magnet energy converter is described wherein the converter comprises: a stator structure including a stator magnet having a spiral geometry; the stator magnet having a U-shaped cross-section, a first leg of the U-shaped cross-section forming a first magnetic pole and a second leg of the U-shaped cross-section forming a second magnetic pole; an elongated rotor structure having a first and second end being positioned within the stator structure, the rotor structure being configured to rotate about rotation axis, herein the rotor structure includes: first and second elongated core elements of a magnetizable material, a first end and second end of the first core element being aligned with the first magnetic pole of the stator magnet and a first end and second end of the second core element being aligned with second magnetic pole of the stator magnet; one or more permanent magnets arranged to magnetize the first and second elongated core elements; and, a first magnetic coil structure for reversing the magnetic polarity of the first end of
摘要:
A motor rotor of the present disclosure includes an annular magnet, a tubular outer cover member that covers an outer circumferential surface of the magnet, and a different member that is located at a position outside the magnet in an axial direction of the magnet. The magnet includes one or a plurality of first recesses indicating an intermediate position between magnetic poles adjacent to each other in a circumferential direction of the magnet. The different member includes one or a plurality of second recesses provided in the circumferential direction of the magnet to correspond to positions of the first recesses. In a state in which the outer cover member covers the magnet, the second recesses are disposed at positions visually recognizable from outside.
摘要:
The disclosure relates to a polyphase transverse flux machine including a stator and a rotor configured to rotate relative to the stator about an axis in a circumferential direction. The transverse flux machine includes an electrical line running along a plurality of yokes in the circumferential direction, and a pair of permanent magnet arrays running in parallel in the circumferential direction. A plurality of return path bodies is provided in the stator, wherein each yoke has an associated return path body at a distance from the associated yoke in the radial direction. The magnetization direction of the permanent magnets in the permanent magnet arrays changes in such a way that a closed magnetic flux repeatedly occurs at each yoke during rotation of the rotor. The closed magnetic flux runs from one permanent magnet array across a respective yoke to the other permanent magnet array, and from there, across the associated return path body, back to the first-mentioned permanent magnet array.