Patent · US Active

Determining rotor position in sensorless switched reluctance motors

US9059651B2 · kind B2 · utility

2Cited by

13References

11Claims

0Family size

Assignee

MELEXIS TECHNOLOGIES NV · BE

Inventors

Sandro Purfuerst · Ilmenau, DE
Thomas Freitag · Hamburg, DE
Veit Zöppig · Langewiesen, DE
Tom Ströhla · Ilmenau, DE

Key dates

Filing date	Oct 4, 2012
Grant date	Jun 16, 2015
Priority date	—
Expiry date	Feb 12, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH02P25/089
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for determining the position of a moving rotor in a switched reluctance motor includes the steps of applying a voltage to a phase winding of the reluctance motor, sampling a signal representative of the current magnitude in this phase winding, detecting a feature of the second temporal derivative of the signal, and determining the position of the moving rotor taking into account the occurrence of this feature. Apparatus for carrying out the method is described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.