Title: Method and device for idneitfying system parameters stator resistance and rotor resistance of transmitter-free induction machine operated in field-oriented manner
Application Number: 98802791 Application Date: 1998.02.23
Publication Number: 1248325 Publication Date: 2000.03.22
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01R31/34
Applicant(s) Name: Siemens AG Address:
Inventor(s) Name: Manfred Depenbrock;Frank Hoffmann
Attorney & Agent: hou yu
Abstract:
    The invention relates to a method for identifying the system parameters, stator resistance (Rs) and rotor resistance (Rr), in a transmitter-free induction machine (DM) operated in a field-oriented manner, said method being carried out when the magnetized induction machine (DM) has come to a stop. According to the invention, a direct voltage (es) is initially supplied to the induction machine (DM) and a direct current actual value (is) determined, from which the stator resistance (Rs) is calculated. Next, a predefined torque set point (SM) is applied and a determined stator current actual phasor (is) and a calculated stator current model phasor (is) is transformed via a reference phasor (T*) in a field-oriented complex reference system and divided into real and imaginary components (BG, BG; WG, WG). A system deviation value (I DELTA ORTHOGONAL I, OMEGA
Time: 33
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