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3 Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały
3 Scientific Papers of The Institute of Electrical Machines, Drives and Measurements of the Wrocław University of Science and Technology Series: Studies and Research

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Control of the DTC-FSVM based induction motor drive in a wide speed range

Nguyen Thac K., Orlowska-Kowalska T.

Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały

2014

Vol. 70, nr 34

3--15

In this paper the direct flux and torque control structure based on Flux-error Space Vector Modulation (DTC-FSVM) has been analyzed and compared to a classical DTC-SVM system. The control structures have been tested in a wide speed range including field weakening algorithm based on the voltage and current limits of the voltage inverter and the induction motor. The proposed control strategies are verified through simulation with a 3 kW induction motor drive.

Comparative analysis of chosen field weakening methods for the space vector modulated - direct torque controlled drive system

Nguyen Thac K., Orłowska-Kowalska T.

Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały

2011

Vol. 65, nr 31

267-280

This paper presents a new simple field weakening (FW) strategy for the Direct Torque Control (DTC) of the induction motor (IM). Based on the Space Vector Modulated - Direct Torque Control (SVM- DTC) scheme, an analysis and comparison of conventional (1/ωm) and proposed method are presented for a whole speed range including FW regions. The proposed strategy is verified through simulation with a 1.5 kW induction motor drive.

A simple wide range space vector PWM controller algorithm for voltage-fed inverter induction motor drive including six-step mode

Nguyen Thac K.

Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały

2010

Vol. 64, nr 30

266-277

In this paper a simple algorithm of space vector pulse width modulation (SVM) for two-level voltage-fed inverter is proposed. The idea of algorithm is that a single algorithm covers the undermodulation and overmodulation range including six-step mode. The algorithm unifies equations to determine angle of reference voltage vector Uc in undermodulation and overmodulation mode I, therefore simplifies calculation program. The open loop control of the induction motor, a smooth operation during transition from the linear control to the six-step mode is demonstrated through experimental results using Matlab/Simulink simulation.