Electric actuator device for reducing torsional vibrations in turbomachinery systems

摘要

An actuator (118) for a turbomachine system (100, 200) is provided that includes a turbomachine (102) and an electric machine (108) coupled to the turbomachine by a shaft (106, 110) extending therebetween. . The actuator includes a rotor (302, 502, 702) coupled to the shaft. The rotor includes a plurality of rotor magnetic field generating elements (308, 504). The actuator also includes a stator (310, 506) configured to receive at least a portion of the shaft proximate the rotor. The stator includes a plurality of stator magnetic field generating elements (318, 514) proximate to the plurality of rotor magnetic field generating elements. The plurality of stator magnetic field generating elements are alternately excited and demagnetized, and are configured to attenuate and apply torsional vibrations by alternately applying and removing correction torque to and from the shaft, respectively. [Selection] Figure 3