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Field-oriented control of current-source inverter fed high speed induction machines using steady-state stator voltages

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2 Author(s)
S. Rees ; Inst. of Power Electron. & Electr. Drives, Stuttgart Univ. ; U. Ammann

One well suited solution to overcome the problems of voltage-source-fed high speed induction machines such as stress of the stator winding insulation and overheating of the rotor is the use of a current-source inverter, since the machine is then fed by almost sinusoidal currents and voltages. However, such drive systems are only efficient if first of all the DC-link current is adjusted to its lowest possible magnitude and secondly - which is the same with directly-fed machines - the value of the rotor resistance or the magnetizing current respectively is assumed correctly. This paper proposes a new DC-link current set value assignment and a method to improve the models for magnetizing current and field angle by using steady-state stator voltages. Measurements taken on a model plant with an output power of 35 kW and a nominal speed of 30000 min-1 prove the feasibility of the presented methods

Published in:

International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006.

Date of Conference:

23-26 May 2006