The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 2018
Filed:
Feb. 09, 2016
Visedo Oy, Lappeenranta, FI;
Risto Tiainen, Pulp, FI;
Antti Tarkiainen, Lappeenranta, FI;
Matti Iskanius, Lappeenranta, FI;
Tero Jarvelainen, Lappeenranta, FI;
DANFOSS MOBILE ELECTRIFICATION OY, Lappeenranta, FI;
Abstract
A device () for producing a position signal indicative of rotational position of a resolver is presented. The device comprises a signal transfer interface () for receiving first and second alternative signals, and a processing system () for generating the position signal on the basis of the amplitudes of the first and second alternative signals and the polarity of an excitation signal of the resolver. The device is configurable to operate in a first operational mode where a local signal generator () generates the excitation signal and the device transmits the excitation signal to the resolver. The device is configurable to operate also in a second operational mode where the device receives information indicative of the polarity of the excitation signal from another device. Thus, devices of the kind described above can be used in a system where many converters are driving separate windings systems of an electrical machine.