Title :
Comparison of induction motor FEM simulations fed by measured and reconstructed DTC inverter voltages
Author :
Aarniovuori, Lassi ; Laurila, Lasse ; Niemelä, Markku ; Pyrhönen, Juha
Author_Institution :
Dept. of Electr. Eng., Lappeenranta Univ. of Technol., Lappeenranta, Finland
Abstract :
A coupled system simulator, based on analytical circuit equations and a finite element method (FEM) model of the motor, is used to analyze a direct-torque-controlled (DTC) frequency-converter-fed industrial 200 kW squirrel-cage induction motor. The measured stator voltage waveforms are used as inputs to the FEM motor model, and the results are compared with the measured ones. Comparison is also made for the simulation results obtained by reconstructed stator voltages. The converter switch states are solved from the measured voltage waveform, and used as inputs of the simulator inverter bridge. The performance of the FEM motor model is analyzed, and the amplitudes of the measured stator current harmonics are kept as references.
Keywords :
finite element analysis; frequency convertors; invertors; machine control; power conversion harmonics; squirrel cage motors; torque control; DTC inverter voltages; analytical circuit equations; converter switch; direct-torque-controlled frequency-converter-fed motor; induction motor FEM simulations; industrial squirrel-cage induction motor; motor finite element method model; power 200 kW; stator current harmonics; stator voltage waveforms; Analytical models; Circuit analysis; Circuit simulation; Coupled mode analysis; Coupling circuits; Induction motors; Inverters; Stators; Switches; Voltage measurement; AC machine; Harmonics; Induction motor; Pulse Width Modulation (PWM); Simulation;
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9
