Method for operation of a converter circuit for a washing machine or a washer/drier, converter circuit, and washing appliance or washer/drier

US7372233B2 · kind B2 · utility

Assignee

• BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

• Hasan Gökcer Albayrak · Berlin, DE
• Lothar Knopp · Berlin, DE
• Thomas Ludenia · Falkensee, DE
• Jörg Skrippek · Priort, DE

Key dates

• Filing date: Jun 1, 2004
• Grant date: May 13, 2008
• Expiry date: Jun 1, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02P2207/01
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A method is provided for operating a converter circuit, in particular a pulse-width modulated frequency converter circuit having a DC voltage intermediate circuit, which controls two or more winding sections of a polyphase dynamo-electrical machine, in particular a three-phase asynchronous motor for a laundry appliance. The method determines one or more parameters of the dynamo-electrical machine, before a rotating field is produced in the dynamo-electrical machine by the converter circuit. The parameters can be used to deduce a variant of the dynamo-electrical machine, and to select open-loop and closed-loop control parameters which are associated with the variant. Likewise, the method allows possible machine faults to be determined by using the parameters. Likewise, a converter circuit and a laundry appliance perform the method and have a converter circuit for controlling a polyphase dynamo-electrical machine, which, in particular, drives a drum which is mounted in the laundry appliance such that it can rotate.