Electronically commutated motor

US7230400B1 · kind B1 · utility

Assignee

• ebm-papst St. Georgen GmbH & Co. KG · DE

Inventors

• Thomas Dufner · Schonach, DE
• Jörg Hornberger · Dornstetten, DE
• Frank Jeske · Tennenbronn, DE
• Hermann Rappenecker · Vöhrenbach, DE
• Arno Karwath · Rottweil, DE

Key dates

• Filing date: Jul 23, 1999
• Grant date: Jun 12, 2007
• Expiry date: Jul 23, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02P6/18
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

In an electronically commutated motor (M), rotor position signals are generated by means of a galvanomagnetic rotor position sensor (40). A timer (CNT_HL) brings about an advanced commutation which occurs only once the motor has reached a specific rotation speed, and whose magnitude is a function of the rotation speed.