Patent Number: 8,872,468

Title: Method and device for operating an asynchronous motor with increased efficiency

Abstract: Method and device for operating an asynchronous motor having increased efficiency. According to the invention, ranges for a motor size of the asynchronous motor are specified. In addition, a value of the motor size is calculated depending on at least one measurement value of a measurement parameter during the operation of the asynchronous motor, wherein the respective calculated value of the motor size is allocated to one of the ranges. Furthermore, a control parameter is changed depending on the range to which the calculated motor parameter is allocated to provide an optimised control parameter such that the control parameter is changed beginning from a starting value specified for the respective range of the motor size until a predetermined criterion for a specific motor size is reached. Furthermore, the optimised control parameter is stored as a support point of a continuous optimal characteristic curve for the control parameter depending on the range to which the calculated motor size is allocated.

Inventors: Nitz; Bernd (London, GB), Klaes; Norbert Rudiger (Schoneiche, DE)

Assignee: MK Regeltechnik AG

International Classification: H02P 27/06 (20060101); H02P 27/08 (20060101)

Expiration Date: 2018-10-28 0:00:00