Invention Grant
- Patent Title: Method for controlling a torque performance of an electrical pitch motor, an electrical pitch-control system and use thereof
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Application No.: US15753210Application Date: 2016-09-13
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Publication No.: US10767627B2Publication Date: 2020-09-08
- Inventor: Jesper Thomsen , Christian Nielsen , Torben Rønnow , Jacob Danielsen
- Applicant: DEIF A/S
- Applicant Address: DK Skive
- Assignee: DEIF A/S
- Current Assignee: DEIF A/S
- Current Assignee Address: DK Skive
- Agency: Melcher Patent Law PLLC
- Agent Jeffrey S. Melcher
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@35e222a5
- International Application: PCT/EP2016/071487 WO 20160913
- International Announcement: WO2017/063804 WO 20170420
- Main IPC: F03D7/02
- IPC: F03D7/02 ; F03D7/04 ; G05B11/36 ; H02P23/00

Abstract:
Method for control of the torque performance of an electric pitch motor (1). A control system (2) comprises a first unit (3) controlling the pitch angle of the rotor blade, a second unit (7) which compares a reference speed Sr with an actual speed Sa of the motor (1) rotational speed. The second unit (7) controls the motor (1) rotational speed, a third unit (10) which regulates the motor (1). The control system (2) comprises a first overload device (13) and a second overload device (14). The second overload device (14) receives an error-speed signal Se, which is the difference between Sr and Sa recorded by the second unit (7). The second overload unit (14) compares See with a maximum allowable speed value, Smax, and the second overload device (14) sends a signal to the motor (1) for the regulation of the torque performance.
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