Method for braking a compressor, compressor of a refrigeration appliance, an air conditioning appliance or a heat pump, and refrigeration appliance, air conditioning appliance or heat pump having the compressor

US10174980B2 · kind B2 · utility

Assignee

• BSH Hausgeräte GmbH · DE

Inventors

• Tommy Beckmann · Durchhausen, DE
• Achim Paulduro · Albeck, DE

Key dates

• Filing date: Aug 19, 2015
• Grant date: Jan 8, 2019
• Expiry date: Aug 19, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B2203/0204
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method is provided for braking a compressor of a refrigeration appliance, of an air conditioning appliance or of a heat pump in which the compressor has a brushless motor with windings and a controller for braking the motor. The controller is configured to brake the brushless motor by using a braking current in a controlled manner starting from an operating rotational speed, in which the braking current during the controlled braking is dependent on induced voltages determined before the controlled braking. The method for braking includes rotating the motor at an operating rotational speed, receiving a signal for decelerating, braking or slowing down, determining voltages induced in the windings and supplying a braking current having a decreasing frequency to the windings, in which the braking current during the braking is dependent on the previously determined induced voltages. A compressor and a refrigeration appliance having the compressor are also provided.