MUMBAI, India, June 13 -- Intellectual Property India has published a patent application (202417069098 A) filed by Aichi Steel Corporation, Aichi, Japan, on Sept. 12, 2024, for 'interior permanent magnet motor and rotor thereof.'
Inventor(s) include Hamada Norihiko; and Ito Kazunori.
The application for the patent was published on June 13, under issue no. 24/2025.
According to the abstract released by the Intellectual Property India: "Provided is a rotor for an interior permanent magnet motor capable of improving performance by increasing interlinkage magnetic flux. The present invention provides a rotor for an interior permanent magnet motor in which permanent magnets (3) are enclosed in slots (12) of a rotor core (1) made of a magnetic material. The rotor core has a non-magnetic region (110) on the outside of frame edge in at least one of the one or more slots. This non-magnetic region is unevenly distributed on the far side from a magnetic pole center (Pc) with reference to a frame edge center (Ps) of the slot. The non-magnetic region may be provided in a bridge located on the outer peripheral side of the slot or in a rib between adjacent slots. The non-magnetic region is formed, for example, by non-magnetically modifying a part of an electromagnetic steel sheet. At least part of the non-magnetic region may consist of a narrowed portion in which the radial width of the bridge or spacing between adjacent ribs is smaller than in the surroundings thereof."
The patent application was internationally filed on Mar. 14, 2023, under International application No.PCT/JP2023/009745.
Disclaimer: Curated by HT Syndication.
