Patent · US Expired

Bidirectional E.C. motor and method of operating the motor

US6078152A · kind A · utility

25Cited by

19References

43Claims

0Family size

Assignee

Papst Motoren GmbH & Co KG · DE

Inventors

Roland Dieterle · St. Georgen, DE
Arno Karwath · Rottweil, DE
Herman Rappenecker · Vöhrenbach, DE

Key dates

Filing date	Jul 2, 1998
Grant date	Jun 20, 2000
Priority date	—
Expiry date	Jul 2, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH02P6/22
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In a method of starting a two-pulse electronically commutated dc motor, which is designed for operation in a preferred direction, for purposes of startup in a desired direction, the following steps are carried out: after start-up, the rotor of the motor is driven, according to a start routine (S118), by supplying current alternately in a first and a second direction, into forced oscillation about a rest position; during the start routine, monitoring (as to whether the rotor has started up) is performed; whenever it is determined that the rotor has started up, the start routine is exited. Further, a method is provided, by means of which the rotational position of the rotor, at which the current of a winding phase is switched on, is optimized as a function of rotation speed and rotation direction.

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