Title:
ASYNCHRONOUS MOTOR WITH LOAD-DEPENDENT STAR OR DELTA CONNECTION
Document Type and Number:
WIPO Patent Application WO/2012/163433
Kind Code:
A3
Abstract:
The invention relates to an apparatus for an asynchronous motor (13) and to a method for controlling a star contactor (8) and a delta contactor (7) of an asynchronous motor (13). In order to operate the asynchronous motor (13) over a wide load range with an improved degree of efficiency, it is proposed that the apparatus comprises a star contactor (8) and a delta contactor (7) for the asynchronous motor (13) and a logic unit (9), wherein the logic unit (9) can control the star contactor (8) and the delta contactor (7) for the asynchronous motor (13), wherein the logic unit (9) is designed to control the star contactor (8) and/or delta contactor (7) for the asynchronous motor (13) using the present motor load of the asynchronous motor (13).
Inventors:
KRAETZSCHMAR ANDREAS (DE)
LI MING (CN)
LI MING (CN)
Application Number:
PCT/EP2011/061584
Publication Date:
April 25, 2013
Filing Date:
July 08, 2011
Export Citation:
Assignee:
SIEMENS AG (DE)
KRAETZSCHMAR ANDREAS (DE)
LI MING (CN)
KRAETZSCHMAR ANDREAS (DE)
LI MING (CN)
International Classes:
H02P1/32; H02P25/18
Domestic Patent References:
| WO2009070089A1 | 2009-06-04 |
Foreign References:
| US20080116839A1 | 2008-05-22 | |||
| DE102006023892A1 | 2007-05-16 | |||
| JPS56129597A | 1981-10-09 | |||
| GB754066A | 1956-08-01 | |||
| DE2363409A1 | 1975-07-03 |
Attorney, Agent or Firm:
SIEMENS AKTIENGESELLSCHAFT (München, DE)
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