Electric machine with a rotor of low inertia
AssigneeSiemens Aktiengesellschaft
InventorAxel Knauff
Life of this patent
Estimating the term…
Abstract
An electric machine, includes a rotor and a shaft centered interiorly of the rotor. An excitation structure is provided for generating a torque upon at least portions of the rotor. The torque from the excitation structure is picked up by a torque receiving structure on the rotor to impart the torque onto the rotor. Disposed between the torque receiving structure and a force-transfer structure for transmitting the torque from the rotor to the shaft is a web structure by which the torque is transmitted to the force transfer structure while effecting an inertial mass relief of the rotor.
Claims38
An electric machine, comprising:
- a shaft;
- a rotor having a laminated configuration;
- means for excitation of at least portions of the rotor;
- means for torque pickup upon the rotor;
- means for force transfer between the rotor and the shaft;
- and
- a web structure between the means for torque pickup and the means for force transfer while effecting an inertial mass relief of the rotor.
An electric machine, comprising:
- a rotor having a laminated configuration;
- a shaft centered interiorly of the rotor;
- an excitation structure for generating a torque;
- a torque receiving structure for picking up the torque from the excitation structure and imparting the torque onto the rotor;
- and
- a connection structure for providing a fixed rotative engagement between the rotor and the shaft;
- wherein the rotor includes a web structure extending inwardly from the torque receiving structure to the shaft and effecting an inertial mass relief of the rotor.
A rotor adapted for use in an electric machine, comprising:
- a body portion having a laminated core structure and including an outer annulus and a web structure configured to effect an inertial mass relief of the main body, wherein the web structure extends inwardly from the annulus and forms a bore for receiving a shaft;
- and
- an excitation structure operatively connected to the annulus for imparting a torque on the body portion.
Dependencies are inferred from the claim text.