18308033. ROTOR simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)
Contents
ROTOR
Organization Name
TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor(s)
Toshinori Okochi of Toyota-shi (JP)
ROTOR - A simplified explanation of the abstract
This abstract first appeared for US patent application 18308033 titled 'ROTOR
Simplified Explanation
The abstract describes a rotor design for an electric motor that includes a rotor core made of stacked electromagnetic steel sheets with anisotropy. The magnetic characteristics of the steel sheets differ in two directions: one along the rolling direction and the other obtained by rotating the first direction by 90°. The rotor core has 4n magnetic pole portions arranged in a circular pattern, with magnets mounted in each pole portion.
- The rotor core is made of stacked electromagnetic steel sheets with anisotropy.
- The magnetic characteristics of the steel sheets differ in two directions: one along the rolling direction and the other obtained by rotating the first direction by 90°.
- The rotor core has 4n magnetic pole portions arranged in a circular pattern.
- Magnets are mounted in each magnetic pole portion of the rotor core.
- The 4n magnetic pole portions include a first magnetic pole portion in a region aligned with the rolling direction and a second magnetic pole portion in a region aligned with the rotated direction.
- The total magnetic flux amount of the magnets per pole in the second magnetic pole portion is greater than the total magnetic flux amount in the first magnetic pole portion.
Potential applications of this technology:
- Electric motors in various industries such as automotive, aerospace, and industrial machinery.
- Renewable energy systems like wind turbines and hydroelectric generators.
- Household appliances like refrigerators, washing machines, and air conditioners.
Problems solved by this technology:
- Improved efficiency and performance of electric motors.
- Enhanced magnetic flux distribution for better power output.
- Reduction in energy losses and heat generation.
Benefits of this technology:
- Higher power density and torque output.
- Improved energy efficiency and reduced energy consumption.
- Enhanced motor performance and reliability.
- Potential for smaller and lighter electric motor designs.
Original Abstract Submitted
A rotor includes a rotor core formed by stacking electromagnetic steel sheets having anisotropy, which means that magnetic characteristics of the electromagnetic steel sheets in a first direction along a rolling direction are different from magnetic characteristics of the electromagnetic steel sheets in a second direction obtained by rotating the first direction by 90°, the rotor core having 4n magnetic pole portions formed along a circumferential direction, and magnets mounted in the rotor core in each of the magnetic pole portions. The 4n magnetic pole portions include a first magnetic pole portion formed in a region including the first direction and a second magnetic pole portion formed in a region including the second direction, and a total magnetic flux amount of the magnets per pole of the second magnetic pole portion is larger than a total magnetic flux amount of the magnets per pole of the first magnetic pole portion.
