摘要:
A multi-degree-of-freedom electromagnetic machine includes a first structure, a second structure, and a control. The first structure is configured to rotate about a spin axis and about a tilt axis that is perpendicular to the spin axis, and includes a first spin conductor, a second spin conductor, and a tilt conductor, which together form a general shape of a surface. The second structure is disposed adjacent to the first structure and includes a plurality of magnets. The control is configured to controllably supply alternating current (AC) to the first and second spin conductors and direct current (DC) to the tilt conductor, wherein the first structure continuously rotates about the spin axis in response to the AC being supplied to the first and second spin conductors, and rotates about the tilt axis to a tilt position in response to the DC being supplied to the tilt conductor.
摘要:
A permanent magnet linear motor (135) including a primary (137) comprising a magnetically permeable core having a first face surface on a first side of the core, a plurality of teeth forming a plurality of slots on the first side, and a plurality of multiphase windings wound to have segments thereof in the slots forming a plurality of magnetic poles at each of the first face surfaces. A permanent magnet pair of opposing polarity is configured to produce magnetic flux and cause the primary (137) to exert a force on the secondary (139a, 139b) when the plurality of multiphase windings are excited by a multiphase source. A passive ferromagnetic secondary (139a, 139b) is adjacent to but spaced from the first face surface, the passive ferromagnetic secondary (139a, 139b) being moveable with respect to the primary (137).
摘要:
The proposed invention is an electric machine with flux switching comprising:- a movable element (20), comprising a plurality of flux switching teeth, and - a stator (10), comprising a plurality of teeth, excitation coils (15) and armature coils, characterized in that the stator is formed of a succession of elementary cells each comprising: - three teeth, comprising a central tooth (120) and two lateral teeth (121), delimiting therebetween two central notches (140), an excitation coil being housed in the central notches and wound around the central tooth, and - two lateral half-notches (141) on either side of the lateral teeth, each half-notch housing at least in part an armature coil, in such a way that two successive elementary cells share a common lateral notch.
摘要:
An electromagnetic actuator including: a core comprising a material having a high magnetic permeability relative to air; an array of coils sequentially arranged on the core, each coil of the array of coils being wound around the longitudinal axis of the core; and a magnet assembly movably mounted along the array of coils, the magnet assembly having a coil side facing the array of coils and an opposite side facing away from the array of coils and including an array of permanent magnets sequentially arranged along the array of coils in a direction parallel to the longitudinal axis, wherein the magnetic moments of the plurality of magnets are selected and arranged to augment the magnetic field produced on the coil side of the magnet assembly and to reduce the magnetic field produced on the opposite side of the magnet assembly.
摘要:
Die vorliegende Erfindung stellt einen Induktionsgenerator zum Erzeugen elektrischen Stromes sowie eine Rotor-Stator-Anordnung (1) für denselben bereit, Eine erfindungsgemäße Rotor-Stator-Anordnung (1) umfasst einen Rotor mit zumindest einer Flussplatte (2) und einen Stator, wobei durch die Bewegung des Rotors relativ zu dem Stator eine Bewegungsrichtung der Flussplatten definiert wird. Erfindungsgemäß weist der Stator eine lineare oder ringförmige Grundplatte (3) auf. Ferner sind auf der Grundplatte (3) entsprechend linear oder ringförmig zumindest zwei Magnetpaare angeordnet. Dabei weist jedes Magnetpaar zur Erzeugung eines dauerhaften Magnetfelds einen ersten Magneten (4a) und einen zweiten Magneten (4b) auf, wobei der Nordpol des ersten Magneten (4a) benachbart zu dem Südpol des zweiten Magneten (4b) und umgekehrt angeordnet ist. Die zumindest eine Flussplatte (2) ist auf einer der Grundplatte abgewandten Seite der Magnetpaare durch den Rotor bewegbar angeordnet.
摘要:
Disclosed herein is a structure for linear and rotary electric machines. The present invention provides a modular mover structure which includes coils (1d) that have an electrical phase difference of 180°, so that the path of magnetic flux is shortened, thus reducing the size of the machine and mitigating the back-EMF unbalance. Furthermore, the modular mover structure can be modified into various shapes. For example, when a skew structure is applied to a mover or stator iron core (1, 2), the force ripples in an electric machine can be reduced. In addition, when a hinge structure is applied to a modular mover iron core (1), the mover can move in a linear and curved manner. Moreover, the structure of the present invention can be applied to a rotary electric machine. In this case, because the number of poles can be easily increased, a low speed high torque direct drive type rotary electric machine can be realized. (Fig. 1A)
摘要:
A secondary for a motor, for instance a linear drive motor, has a sheet of highly magnetic permeable material with a plurality of slots extending through the sheet spaced along a length of the sheet. The slots define a plurality of teeth in the sheet and enable the sheet to be conformable to a mounting surface when forming the secondary of the motor. The top surface of the sheet has a plurality of pockets formed adjacent the plurality of slots. The pockets extend parallel to the width and are spaced along the length of the sheet. The pockets form a sensor operatively connected to a control of the motor. The sensor may be an encoder, and/or the sensor may be operatively connected to a control for controlling commutation of the motor, and/or setting positional limits and/or "home(s)" for the motor, providing absolute positional information and/or providing information about the sheet, for instance, the identity of one platen among many.
摘要:
An electric machine that allows a reduction in number of winding portions and a reduction in amount of permanent magnets used is provided. An electric machine includes a magnetic pole piece array including a plurality of magnetic pole pieces spaced along a permanent magnet array. The permanent magnet array is in immovable relation with winding portions. The pitch of a plurality of permanent magnets and the pitch of a plurality of magnetic pole pieces are determined such that magnetic flux flows through two of the permanent magnets magnetized in the same direction and located in the permanent magnet array with one permanent magnet interposed between the two permanent magnets, and also flows through one or two of the magnetic pole pieces facing the one permanent magnet interposed between the two permanent magnets and magnetized in a direction of magnetization different from the direction of magnetization of the two permanent magnets.
摘要:
Es soll eine Transfervorrichtung mit erhöhtem Durchsatz und gegebenenfalls verbesserter Positioniergenauigkeit vorgeschlagen werden. Hierzu wird eine Transfervorrichtung mit einem Primärteil (P) mindestens einem ersten und einem zweiten Sekundärteil (S1,S2), die jeweils mit dem Primärteil (P) zum Zwecke des Antriebs magnetisch gekoppelt sind, und einer Regelungseinrichtung zur Regelung eines Antriebs der Sekundärteile (S1,S2) bereitgestellt. Durch die Regelungseinrichtung ist der Antrieb des ersten Sekundärteils (S1) in einem ersten Bereich (P1) des Primärteils (P) gemäß einer ersten Regelungsvorschrift und der Antrieb des zweiten Sekundärteils (S2) in einem zweiten Bereich (P2) des Primärteils (P) gemäß einer gegenüber der ersten verschiedenen zweiten Regelungsvorschrift regelbar. Weiterhin ist die Grenze (GR), die den ersten Bereich (P1) von dem zweiten Bereich (P2) trennt, durch die Regelungseinrichtung dynamisch veränderbar. Darüber hinaus wird ein entsprechendes Antriebsverfahren bereitgestellt. Durch die dynamische Änderung der Bereiche (P1,P2) lässt sich der Abstand zwischen den Sekundärteilen (S1,S2) verkürzen und damit der Durchsatz erhöhen.