Rotors for rotating electrical machines
A rotor and rotor core technology, applied in the rotor of permanent magnet assisted synchronous reluctance motor, rotor of synchronous reluctance motor, PM assisted synchronous reluctance motor, can solve the problem of permanent magnet damage or broken
Active Publication Date: 2021-12-07
ABB (SCHWEIZ) AG
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Problems solved by technology
[0009] Furthermore, if the permanent magnets are inserted before the casting process, there is also a strong risk of damage or shattering of the permanent magnets due to thermal expansion of the iron part of the core
Method used
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[0041] In the detailed description below and in the attached Figure 2-7 In , for simplicity, the invention will be described with reference to the details of the lamination showing only the flux barrier FB and the two adjacent flux paths FP portions. Moreover, in figure 1 In , laminations for a rotor of a four-pole synchronous reluctance machine are shown. Of course, the same structure and principles can be replicated in a rotor with a different number of poles, and where the laminations can have any number of flux barrier FB and flux path FP sections, depending on the needs and design of the machine.
[0042] With reference to the accompanying drawings, in its more general definition, a rotor for a synchronous reluctance machine according to the present invention comprises a rotor core having a plurality of magnetically conductive laminations, which are generally denoted by the accompanying drawings Marks 1 to 6 indicate.
[0043] According to known design principles, the...
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A rotor for a synchronous reluctance motor includes a rotor core, the rotor core has a plurality of magnetically permeable laminations stacked along the axial direction of the rotor. The magnetically permeable laminations comprise open portions forming a plurality of flux barriers (FB) radially alternating with flux path (FP) portions, at least one of said flux barriers (FB) comprising a connection adjacent said at least one magnetic flux barrier (FB). A bridge between the two flux path (FP) sections of the flux barrier (FB). The at least one flux barrier (FB) has a first barrier centerline which is a line equidistant from both sides of the at least one flux barrier (FB) and the bridge has a second bridge centerline which is a line equidistant from both sides of the at least one flux barrier (FB) Equidistant lines on both sides of the bridge, the first and second centerlines intersect at a point of intersection (IC). The bridge has a first axis of symmetry and a second axis of symmetry and is asymmetric with respect to at least one of the first and second axes of symmetry. A first axis of symmetry is defined as a line tangent to the first barrier centerline and passes through the point of intersection, and a second axis of symmetry is defined as a line orthogonal to the first axis of symmetry and passes through the point of intersection.
Description
technical field [0001] The present invention relates to a rotor for a rotating electrical machine, in particular, to a rotor for a synchronous reluctance machine. More particularly, the present invention relates to a rotor for a permanent magnet assisted (PM assisted) synchronous reluctance machine. Furthermore, the present invention relates to a rotating electric machine, in particular a synchronous reluctance machine, and more particularly to a PM assisted synchronous reluctance machine comprising such a rotor. Background technique [0002] A rotor for a synchronous reluctance machine of known type is usually formed from a substantially cylindrical lamination stack having a plurality of magnetically conductive laminations comprising a flux conducting section and a flux barrier section, Thus forming one or more pole pairs. The flux conducting and flux barrier sections differ from each other to produce different degrees of permeability, the section with higher permeability...
Claims
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IPC IPC(8): H02K1/24H02K1/27
CPCH02K1/246H02K1/276H02K1/223H02K21/46H02K1/22H02K1/2766H02K1/27
Inventor P·S·特尔米尼A·卡斯塔尼尼G·塔尔塔利诺M·马吉J·科莱赫迈宁T·肯赛坎加斯
Owner ABB (SCHWEIZ) AG