Intellectual Property India Publishes Patent Application for Improved Stepped Rotor Skew Angle And Geometry Of Magnets For Sinusoidal Back Emf And Reduced Torque Ripple

MUMBAI, India, June 26 -- Intellectual Property India has published a patent application (202441098947 A) filed by Eicher Motors Limited on December 13, 2024, for Improved Stepped Rotor Skew Angle And Geometry Of Magnets For Sinusoidal Back Emf And Reduced Torque Ripple.

Inventors include Umesh Krishnappa; Dr Ramkumar; Ranjani Padmanabhan; Nabeel Tk; and Ganesh Nagarajan.

The application for the patent was published on June 19, 2026, under issue no. 25/2026.

Abstract: ABSTRACT IMPROVED STEPPED ROTOR SKEW ANGLE AND GEOMETRY OF MAGNETS FOR SINUSOIDAL BACK EMF AND REDUCED TORQUE RIPPLE A motor assembly system, comprising: a stator (102); a rotor (106); a plurality of slots (104) disposed on the rotor (106); and a plurality of permanent magnets, wherein the plurality of permanent magnets is positioned within a rotor core lamination stack, wherein the plurality of permanent magnets is inserted into the rotor core lamination stack at an optimized angle f relative to the axial direction. (

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