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1. (WO2017037496) SYSTEM HAVING ELECTRICAL MACHINE AND CONTROLLER

Pub. No.:    WO/2017/037496    International Application No.:    PCT/IB2015/001986
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sun Aug 30 01:59:59 CEST 2015
IPC: H02P 27/04
Applicants: ABB SCHWEIZ AG
Inventors: AHMED, Sara
PAN, Zhiguo
KIM, Hongrae
Title: SYSTEM HAVING ELECTRICAL MACHINE AND CONTROLLER
Abstract:
A unique system may include a power absorber; an electrical machine coupled to the power absorber and operative to supply mechanical power to the power absorber; a drive coupled to the electrical machine and operative to supply electrical power to drive the electrical machine; and a controller communicatively coupled to the drive. The controller may be configured to execute program instructions to selectively vary a control voltage while maintaining a given torque output of the electrical machine, and to determine, based on varying the control voltage, a minimum current required for the electrical machine to maintain the given torque output.