18251642. ROTOR OF ROTATING ELECTRIC MACHINE AND ROTATING ELECTRIC MACHINE simplified abstract (Mitsubishi Electric Corporation)
ROTOR OF ROTATING ELECTRIC MACHINE AND ROTATING ELECTRIC MACHINE
Organization Name
Mitsubishi Electric Corporation
Inventor(s)
Saya Okano of Chiyoda-ku, Tokyo (JP)
Go Kajiwara of Chiyoda-ku, Tokyo (JP)
ROTOR OF ROTATING ELECTRIC MACHINE AND ROTATING ELECTRIC MACHINE - A simplified explanation of the abstract
This abstract first appeared for US patent application 18251642 titled 'ROTOR OF ROTATING ELECTRIC MACHINE AND ROTATING ELECTRIC MACHINE
Simplified Explanation
The abstract of this patent application describes a method for optimizing the flexural rigidity of a bipolar rotor in a rotating electric machine to reduce vibration at different rotational speeds. The flexural rigidity asymmetry of the rotor main portion is adjusted using a cross slot in the rotor core, while the flexural rigidity asymmetry of the rotor stepped portion is adjusted using a cutout groove. By combining these adjustments, the vibration in each double frequency vibration flexural vibration mode is restricted across the entire range of driving rotational speed.
- The flexural rigidity of a bipolar rotor is optimized to reduce vibration.
- Flexural rigidity asymmetry of the rotor main portion is adjusted using a cross slot in the rotor core.
- Flexural rigidity asymmetry of the rotor stepped portion is adjusted using a cutout groove.
- By combining these adjustments, vibration in each double frequency vibration flexural vibration mode is restricted across the entire range of driving rotational speed.
Potential Applications
- Electric motors and generators
- Rotating machinery in various industries
Problems Solved
- Excessive vibration in rotating electric machines
- Inefficient operation due to vibration-induced stress and wear
Benefits
- Reduced vibration at different rotational speeds
- Improved performance and efficiency of rotating electric machines
- Extended lifespan of the machine components
Original Abstract Submitted
A bipolar rotor of a rotating electric machine is such that flexural rigidity asymmetry of a rotor main portion is adjusted using a cross slot provided in a rotor core, and flexural rigidity asymmetry of a rotor stepped portion is adjusted using a cutout groove provided in the rotor stepped portion, whereby optimization is achieved by combining the flexural rigidity asymmetry of the rotor main portion and the flexural rigidity asymmetry of the rotor stepped portion, and vibration in each double frequency vibration flexural vibration mode is restricted over a whole region of driving rotational speed.
