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1. (WO2017151451) SYSTEM AND METHOD FOR CONTROLLING A LINEAR MOTOR HAVING MULTIPLE SECTIONS WITH A SINGLE VARIABLE FREQUENCY DRIVE

Pub. No.:    WO/2017/151451    International Application No.:    PCT/US2017/019569
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Feb 28 00:59:59 CET 2017
IPC: H02P 25/06
H02P 6/00
Applicants: SIEMENS AKTIENGESELLSCHAFT
Inventors: OSMAN, Richard H.
Title: SYSTEM AND METHOD FOR CONTROLLING A LINEAR MOTOR HAVING MULTIPLE SECTIONS WITH A SINGLE VARIABLE FREQUENCY DRIVE
Abstract:
A system (500) for controlling a linear alternating current (AC) electrodynamic machine (400) includes a linear AC electrodynamic machine (400) with a stationary part (410) with a plurality of discrete stationary sections (412, 414, 416), each stationary section (412, 414, 416) having a poly-phase circuit; a variable frequency drive (VFD) (510) configured to be coupled to a utility power source and to provide output currents, wherein the VFD (510) is operable coupled to the stationary part (410) of the linear AC electrodynamic machine (400) for powering and controlling the stationary sections (412, 414, 416) of the stationary part (410); and a plurality of switches (512, 514, 516) coupled between the VFD (510) and the stationary part (410), wherein the plurality of switches (512, 514, 516) allow connecting or disconnecting the VFD (510) to or from the stationary sections (412, 414, 416).