Title:
METHOD FOR OPERATING AN ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2014/048537
Kind Code:
A3
Abstract:
The invention relates to a method for operating an electric machine and to an electric motor for carrying out said method, wherein a rotor winding at the rotor is designed as a rotary field winding, and wherein a stator winding is arranged on the stator, which is also designed as a rotary field winding, wherein each rotary field winding is fed from a respective inverter and wherein, on the basis of the mechanical speed and according to a characteristic curve, an electrical frequency ωS, Soll is determined from the voltage that is fed from the inverter on the stator side to the stator winding. According to the invention, the characteristic curve is formed such that the stator feed frequency is reduced to less than a minimum frequency in a rotational speed range from at least Ωmin to Ω0, wherein Ωmin is a first rotational speed and Ω0 is a second rotational speed, the amount of the second rotational speed Ω0 being greater than the amount of the first rotational speed.
Inventors:
SCHMIDT JOSEF (DE)
SIMON OLAF (DE)
SCHUMANN CHRISTIAN (DE)
STEIN EDGAR (DE)
SIMON OLAF (DE)
SCHUMANN CHRISTIAN (DE)
STEIN EDGAR (DE)
Application Number:
PCT/EP2013/002623
Publication Date:
August 07, 2014
Filing Date:
September 02, 2013
Export Citation:
Assignee:
SEW EURODRIVE GMBH & CO (DE)
International Classes:
H02P25/02; H02K3/26; H02P9/00; H02P21/00; H02P25/26; H02P27/05
Domestic Patent References:
| WO2012101630A1 | 2012-08-02 |
Foreign References:
| DE19506006A1 | 1996-08-29 | |||
| EP0884835A1 | 1998-12-16 | |||
| DE19756955A1 | 1999-07-01 | |||
| EP0918012A2 | 1999-05-26 | |||
| GB1439372A | 1976-06-16 |
Other References:
MERIEM ABDELLATIF,MARIA PIETRZAK-DAVID,ILHEM SLAMA-BELKHODJA: "Sensitivity of the Currents Input-Output Decoupling Vector Control of the DFIM versus Current Sensors Fault", POWER ELECTRONICS AND MOTION CONTROL CONFERENCE 2008 (EPE-PEMC 2008), 1 September 2008 (2008-09-01) - 3 September 2008 (2008-09-03), Poznan, pages 938 - 944, XP002725473, ISBN: 978-1-4244-1742-1
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