Invention Grant
- Patent Title: System having a first electric motor and a second electric motor for driving a string
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Application No.: US14706589Application Date: 2015-05-07
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Publication No.: US09973117B2Publication Date: 2018-05-15
- Inventor: Joerg Pieder , Paolo Belli
- Applicant: ABB Technology AG
- Applicant Address: CH Baden
- Assignee: ABB SCHWEIZ AG
- Current Assignee: ABB SCHWEIZ AG
- Current Assignee Address: CH Baden
- Agency: Barnes & Thornburg LLP
- Priority: EP12191670 20121107
- Main IPC: H02K7/20
- IPC: H02K7/20 ; H02P5/747 ; F04B15/06 ; H02K7/00 ; H02K19/10 ; H02P29/50

Abstract:
An exemplary system includes a first electric motor and a second electric motor, which are coupled mechanically to one another via a common string of the system. The string has a torsional natural oscillation at a natural frequency. A first oscillating torque acts on the string by the first electric motor and a second oscillating torque acts on the string by the second electric motor. The second electric motor is arranged with respect to the first electric motor such that the effect of the second oscillating torque on the string results in damping of the excitation of the natural oscillation owing to the first oscillating torque.
Public/Granted literature
- US20150244293A1 SYSTEM HAVING A FIRST ELECTRIC MOTOR AND A SECOND ELECTRIC MOTOR FOR DRIVING A STRING Public/Granted day:2015-08-27
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