Drive system for a permanently excited electric motor having at least one phase winding

US6239566A · kind A · utility

Assignee

• Mannesmann Sachs AG · DE

Inventors

• Alfred Tareilus · Schweinfurt, DE
• Alfred Ruthlein · Schweinfurt, DE
• Erich Karg · Zeitlofs, DE

Key dates

• Filing date: May 12, 1999
• Grant date: May 29, 2001
• Expiry date: May 12, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/64
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A drive system for a permanently excited electric motor having at least one phase winding including a half-bridge arrangement for each phase winding of the motor, an intermediate circuit connecting each half-bridge arrangement to a motor supply voltage source, and a drive arrangement for driving each half-bridge arrangement. In accordance with the driving via the drive arrangement, a voltage or a potential with a predetermined polarity is applied or can be applied for a predetermined duration by each half-bridge arrangement to that phase winding of the electric motor which is assigned to this half-bridge arrangement. An operating state registering arrangement registers an operating state of the drive system and/or of the electric motor, where the drive arrangement is designed such that, when the presence of at least one predetermined operating state in the drive system and/or in the electric motor is registered by the operating state registering arrangement, a command is generated to produce a short circuit between each terminal of the motor.