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Electrical machine and method of operating the electrical machine

A technology of local, electrically insulating materials, applied in the direction of synchronous motors with stationary armatures and rotating magnets, electrical components, electromechanical devices, etc.

Pending Publication Date: 2021-08-24
FEAAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, permanent magnets usually account for the majority of the total cost of the motor

Method used

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  • Electrical machine and method of operating the electrical machine
  • Electrical machine and method of operating the electrical machine
  • Electrical machine and method of operating the electrical machine

Examples

Experimental program
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Embodiment Construction

[0042] figure 1 A schematic cross-section through the electric machine 20 according to the exemplary embodiment is shown. The motor 20 includes a stator 21 and a rotor 22 rotatably mounted relative to the stator 21 . The rotor 22 is an inner rotor provided in the stator 21 . That is to say, in the cross section shown, the stator 21 completely surrounds the rotor 22 . An air gap 25 is provided between the stator 21 and the rotor 22 .

[0043] The rotor 22 includes two first recesses 23 . Two first recesses 23 are arranged in the rotor 22 and extend from the air gap 25 completely through the rotor 22 to the shaft 26 on which the rotor 22 is arranged. The rotor 22 includes a rotor core 30 . The first recess 23 extends completely through the rotor core 30 in the illustrated cross section through the rotor 22 . Each of the first recesses 23 extends through the rotor 22 in the radial direction r. Each radial direction r extends from the center of the rotor 22 towards the air ...

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PUM

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Abstract

Disclosed is an electrical machine (20), comprising a stator (21) and a rotor (22) rotatably supported relative to the stator (21) is disclosed. The rotor (22) comprises two first recesses (23) and at least one second recess (24), wherein an air gap (25) is arranged between the stator (21) and the rotor (22), the two first recesses (23) are arranged in the rotor (22) and extend completely through the rotor (22) from the air gap (25) to a shaft (26) on which the rotor (22) is arranged, the two first recesses (23) are arranged in a manner displaced relative to one another by less than 180 DEG along the circumference of the rotor (22), the at least one second recess (24) is arranged in a manner displaced relative to the first recesses (23) by at least 90 DEG along the circumference of the rotor (22), the at least one second recess (24) does not extend through the rotor (22) to the shaft (26), and a first permanent magnet (27) is arranged each in the first recesses (23) and / or a second permanent magnet (28) is arranged each in the at least one second recess (24). In addition, a method of operating the electrical machine (20) is provided.

Description

technical field [0001] The present application relates to an electric machine and a method of operating an electric machine. Background technique [0002] Typically, an electric machine includes a stator and a rotor movable relative thereto. Electric machines are capable of operating as motors or generators, converting electrical energy into kinetic energy and vice versa. In operation, the rotor magnetic field interacts with the stator's magnetic field. [0003] To generate the rotor magnetic field, the rotor can have permanent magnets. The advantage of using permanent magnets is that there are many different ways of placing permanent magnets in the rotor, which is why there are various ways of optimizing the efficiency of the motor. [0004] However, permanent magnets typically account for the majority of the overall cost of the electric machine. [0005] One object to be achieved is to provide an electric machine capable of efficient operation. Another object to be ac...

Claims

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Application Information

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IPC IPC(8): H02K1/27
CPCH02K1/27H02K1/2753H02K1/276H02K2213/03H02K1/2706H02K21/14H02K1/2773
Inventor 古拉克·达亚库
Owner FEAAM