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rotor for motor

A technology of rotors and synchronous motors, applied in electromechanical devices, electrical components, electrical components, etc., can solve the problems of reducing the radial force density and amplitude, and achieve the effect of reducing magnetic leakage flux and improving the strength of anti-centrifugal force.

Active Publication Date: 2021-02-12
VOLKSWAGEN AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no solution to date to reduce the radial force density amplitude without compromising power, torque or material cost

Method used

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Embodiment Construction

[0024] figure 1 A cross-sectional view of a rotor (100) is shown, wherein the rotor (100) has recesses in the form of magnet slots (11, 12) which are designed to receive magnets (13, 14). The magnet slots are arranged in the rotor such that the first end faces (15) of the magnets (13, 14) are opposite to the circumferential face (23) of the rotor and the second end faces (16) of the magnets (13, 14) are opposite to the circumferential face (23) of the rotor. Peripheral faces facing away from each other. The magnet slots ( 11 , 12 ) with the magnets ( 13 , 14 ) located in the magnet slots run obliquely when viewed radially. Each magnet slot (11, 12) has a profile (17, 18) in the region of the first end face (15, 15a), which not only extends directly adjacent to the first end face (15, 15a), but also along the The circumferential (23) view of the rotor extends laterally of the magnets (13, 14). The moldings (17, 18) thus form a combined cavity consisting of the aforementioned...

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Abstract

To provide a rotor (100) for an electric machine, in particular a rotor blade for a permanently excited synchronous machine, which reduces the acoustic sensitivity due to the radial force density amplitude well and without additional material investment Instead, it is provided that the rotor has at least one magnet slot (11, 12) for each receiving a magnet (13, 14), wherein the magnet slots (11, 12) are completely surrounded in the radial direction by the rotor (100) , and wherein the magnets respectively have a first end surface (15, 15a) facing the circumferential surface of the rotor (100) and a second end surface (16, 16a) facing away from the circumferential surface of the rotor (100), wherein the The magnet slot (11, 12) has a shape (17, 18) in the region of the first end face (15, 15a) of the magnet, wherein the shape (17, 18) passes through the first region (20, 20a ) adjoins the first end face (15, 15a) and extends laterally of the magnets (13, 14) in the circumferential direction of the rotor via at least one second region (21, 21a).

Description

technical field [0001] The invention relates to a rotor for an electric machine, in particular a rotor blade for a permanently excited synchronous machine, a permanently excited synchronous machine with a rotor, a hybrid drive, in particular for a motor vehicle Hybrid drives with permanently excited synchronous motors and / or rotors. Background technique [0002] In a synchronous machine, the shaft is driven in that the shaft-connected rotor equipped with permanent magnets is oriented in a rotating field formed by a stator with voltage-loaded coils. The permanent magnets are arranged in magnet slots which are completely surrounded by the rotor. It is known to influence the magnetic flux in the rotor by shaping the magnet slots. The choice of the geometry of the molding on the magnet slots thus becomes an important influencing factor for the torque of the electric machine. [0003] A rotor having this type of configuration is known from DE 10 2014 219 894 A1 for a three-pha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27
CPCH02K1/2706H02K2213/03H02K1/2766H02K1/27
Inventor M.克鲁斯R.赫尔默H.艾因菲尔德H.德克F.比特纳
Owner VOLKSWAGEN AG