20240030761. ROTOR AND ROTATING ELECTRIC MACHINE simplified abstract (DENSO CORPORATION)

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ROTOR AND ROTATING ELECTRIC MACHINE

Organization Name

DENSO CORPORATION

Inventor(s)

Toshihiro Uchida of Kariya-city (JP)

Ritsuro Hiramatsu of Kariya-city (JP)

ROTOR AND ROTATING ELECTRIC MACHINE - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240030761 titled 'ROTOR AND ROTATING ELECTRIC MACHINE

Simplified Explanation

The abstract describes a rotor with magnetic poles that consist of permanent magnets and outer core portions. The outer core portions have an arc-shaped surface that gets closer to the rotation axis as it extends from the center of the magnetic pole towards both sides in a circumferential direction. The rotor core has maximum displacement portions at the intersections of the arc-shaped surfaces, which are the most displaced from a reference circle radially inward. The displacement amount of these maximum displacement portions from the reference circle is smaller than the maximum thickness of the permanent magnets.

  • The rotor has magnetic poles with permanent magnets and outer core portions.
  • The outer core portions have an arc-shaped surface that becomes closer to the rotation axis as it extends from the magnetic pole center towards both sides.
  • The rotor core has maximum displacement portions at the intersections of the arc-shaped surfaces.
  • The maximum displacement portions are the most displaced from a reference circle radially inward.
  • The displacement amount of the maximum displacement portions from the reference circle is smaller than the maximum thickness of the permanent magnets.

Potential Applications:

  • Electric motors
  • Generators
  • Magnetic levitation systems

Problems Solved:

  • Improved efficiency of rotor systems
  • Enhanced magnetic field strength and stability
  • Reduced mechanical stress on permanent magnets

Benefits:

  • Increased power output
  • Improved energy conversion efficiency
  • Enhanced durability and reliability of rotor systems


Original Abstract Submitted

a rotor has a plurality of magnetic poles each including one of permanent magnets and one of outer core portions. each of the outer core portions has a radially outer surface that has an arc shape such that the radially outer surface becomes closer to a rotation axis of the rotor as it extends from a magnetic-pole center of the magnetic pole toward both sides in a circumferential direction. a reference circle is defined which has a diameter equal to a maximum diameter of the rotor core and centers on the rotation axis. an outer circumferential surface of the rotor core has, at intersections between the arc-shaped radially outer surfaces of the outer core portions, maximum displacement portions that are most displaced from the reference circle radially inward. a displacement amount of the maximum displacement portions from the reference circle is smaller than a maximum thickness of the permanent magnets.

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