Invention Grant
- Patent Title: System and method for wireless power transfer to a rotating member in a motor
-
Application No.: US16585297Application Date: 2019-09-27
-
Publication No.: US11431233B2Publication Date: 2022-08-30
- Inventor: Xikai Sun , Gennadi Sizov , Michael J. Melfi
- Applicant: Rockwell Automation Technologies, Inc.
- Applicant Address: US OH Mayfield Heights
- Assignee: Rockwell Automation Technologies, Inc.
- Current Assignee: Rockwell Automation Technologies, Inc.
- Current Assignee Address: US OH Mayfield Heights
- Agency: Boyle Fredrickson, SC
- Main IPC: H02K21/16
- IPC: H02K21/16 ; H02K3/42 ; H02J50/10 ; H02K1/24 ; H02K1/22 ; H02K1/16

Abstract:
A system to reduce eddy currents and the resulting losses in a synchronous motor includes at least one pick-up coil mounted to the rotor. Each pick-up coil may be located proximate a pole on the rotor. A voltage applied to the stator to control the synchronous motor includes both a fundamental component and harmonic components. The fundamental component interacts with a magnetically salient structure in each pole on the rotor to cause rotation of the rotor. The harmonic components induce a voltage in the pick-up coil. The portion of the harmonic components that induce a voltage in the pick-up coil no longer generate eddy currents within the motor. The energy harvested by the pick-up coil may also be utilized in a function other than driving the motor, such as powering a sensor mounted on the rotor.
Public/Granted literature
- US20210099041A1 System and Method for Wireless Power Transfer to a Rotating Member in a Motor Public/Granted day:2021-04-01
Information query