Patent · US Active

Sensorless position detection for a brushless direct current motor during inverter standby

US7489097B2 · kind B2 · utility

23Cited by

7References

10Claims

0Family size

Assignees

Chrysler Group LLC · US
Daimler AG · DE
GM GLOBAL TECHNOLOGY OPERATIONS LLC · US
Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Zhenxing Fu · Ann Arbor, US
Lars Weinschenker · Salach, DE
Jingchuan Li · Troy, US

Key dates

Filing date	Nov 2, 2006
Grant date	Feb 10, 2009
Priority date	—
Expiry date	Nov 2, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/92
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method of controlling a brushless direct current motor without a position sensor. The motor includes a plurality phase windings adapted to be energized by an active inverter circuit that synchronously applies drive voltages through a plurality of phases to produce drive currents in the phase windings. Back electromotive force voltages are detected when the inverter circuit is inactive for sensorless detection of motor position.

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