Rotor-stator structure incorporating a reinforced magnet structure for use in a rotor assembly with magnetic regions having angled facing surfaces
A technology of stator structure and magnetic structure, applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuit shape/style/structure, electric components, etc., can solve problems such as hindering heat transfer
Active Publication Date: 2017-05-24
NOVATORQUE INC
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Problems solved by technology
Where the windings are located within the interior of at least some conventional outer rotor configurations, heat transfer is generally hindered when the windings are energized
Method used
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[0045] definition
[0046] The following definitions apply to some of the elements described with respect to some embodiments. These definitions may also be extended herein.
[0047] As used herein, in at least one embodiment, the term "air gap" refers to the space or gap between a surface of a magnet and a facing pole surface. Examples of magnet surfaces include any surface of magnetic material (e.g., the surface of a permanent magnet), such as an interior permanent magnet ("IPM") through a magnetically permeable material through which a flux passes (e.g., the flux is generated by the magnetic material). or any surface or part of a surface of a "body generating a magnetic field". This space can be physically described as a volume bounded at least by regions and pole faces of the magnet surface. The air gap functions to enable relative motion between the rotor and stator and to define the flux interaction area. While air gaps are typically filled with air, they need not be...
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Various embodiments relate generally to electric power machines and the like, and more particularly to rotor assemblies and rotor-stator structures for electric power machines, including but not limited to outer rotor assemblies with corresponding stator assemblies and / or or inner rotor assembly. In some embodiments, the rotor assembly may include a magnetically permeable structure having facing surfaces oriented at an angle to the axis of rotation. Groups of magnetic structures may be interleaved with the magnetically permeable structures. The magnetically permeable structure may also include a non-facing surface adjacent to which a strengthening magnet is disposed to enhance flux in a flux path through the magnetic structure interleaved with the magnetically permeable structure. Additionally, the rotor assembly may include a flux conductor shield disposed adjacent to the strengthening magnet, the flux conductor shield configured to provide a return flux path.
Description
technical field [0001] Various embodiments relate generally to electric power machines and the like, and more particularly to flux enhancing structures and techniques in rotor assemblies and rotor-stator structures for electric power machines, including but not limited to outer rotor assemblies pieces. Background technique [0002] Both electric machines and generators are known to use axially based rotor and stator configurations, which may experience several phenomena during operation. For example, conventional axial motor and generator structures may experience losses, such as eddy current losses or hysteresis losses. The hysteresis loss is the energy required to magnetize and demagnetize the magnetic material constituting part of the motor or generator, whereby the hysteresis loss increases as the amount of material increases. An example of a portion of an electric machine that experiences hysteresis losses is the "back iron". In some conventional motor designs, such ...
Claims
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IPC IPC(8): H02K1/12
CPCH02K1/14H02K16/04H02K21/12H02K21/22H02K2201/03H02K1/2789H02K1/2798
Inventor 约翰·P·彼得罗肯·G·沃森唐纳德·伯奇杰里米·迈尔迈克尔·雷加尔布托
Owner NOVATORQUE INC