60° bus-clamping based DTC strategy dedicated to three-level inverter fed induction motor drives

The paper is devoted to the synthesis and performance analysis of a direct torque control (DTC) strategy, based on the bus-clamping technique, dedicated to three level NPC inverter fed induction motor drives. The principle of the proposed strategy consists in keeping the voltage vector of each motor phase during 60° of the half of a cycle of the reference stator flux vector. The synthesis of the vector selection tables (one for clockwise rotation and the other for anti-clockwise rotation) is achieved on the basis that enables the fulfilment of the control combinations related to the variations of the stator flux and the electromagnetic torque, along with a reduction of their ripples. Simulation results highlight the torque high dynamic as well as reduced ripple, exhibited by the three level NPC inverter fed induction motor drive under the control of the proposed bus-clamping DTC strategy.

[1]  G. Narayanan,et al.  Novel Switching Sequences for a Space-Vector-Modulated Three-Level Inverter , 2012, IEEE Transactions on Industrial Electronics.

[2]  Di Zhao,et al.  Advanced bus-clamping PWM techniques based on space vector approach , 2006, IEEE Transactions on Power Electronics.

[3]  Ahmed Masmoudi,et al.  Potentialities of DTC strategies in position regulation: application to robotics , 2011 .

[4]  Toshihiko Noguchi,et al.  A New Quick-Response and High-Efficiency Control Strategy of an Induction Motor , 1986, IEEE Transactions on Industry Applications.

[5]  G. Narayanan,et al.  Reduction of Torque Ripple in Induction Motor Drives Using an Advanced Hybrid PWM Technique , 2010, IEEE Transactions on Industrial Electronics.

[6]  Nik Rumzi Nik Idris,et al.  Simple Dynamic Overmodulation Strategy for Fast Torque Control in DTC of Induction Machines With Constant-Switching-Frequency Controller , 2011 .

[7]  Frede Blaabjerg,et al.  Sensorless DTC-SVM for Induction Motor Driven by a Matrix Converter Using a Parameter Estimation Strategy , 2008, IEEE Transactions on Industrial Electronics.

[8]  Ahmed Masmoudi,et al.  DTC of an IPM-BLAC motor with a bus-clamping bang-bang controlled VSI in the armature , 2015, 2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER).

[9]  Yongchang Zhang,et al.  A Novel Duty Cycle Control Strategy to Reduce Both Torque and Flux Ripples for DTC of Permanent Magnet Synchronous Motor Drives With Switching Frequency Reduction , 2011, IEEE Transactions on Power Electronics.

[10]  Wei Xu,et al.  An Improved Direct Torque Control for Three-Level Inverter-Fed Induction Motor Sensorless Drive , 2012, IEEE Transactions on Power Electronics.

[11]  Yongchang Zhang,et al.  A Simple Method to Reduce Torque Ripple in Direct Torque-Controlled Permanent-Magnet Synchronous Motor by Using Vectors With Variable Amplitude and Angle , 2011, IEEE Transactions on Industrial Electronics.

[12]  M.V.R. Rao,et al.  Space vector Pulse width modulation control of induction motor , 2007 .

[13]  T. Sutikno,et al.  Simple Dynamic Overmodulation Strategy for Fast Torque Control in DTC of Induction Machines with Constant Switching Frequency Controller , 2010, 2010 IEEE Industry Applications Society Annual Meeting.

[14]  Ahmed Masmoudi,et al.  Bus-Clamping-Based DTC: An Attempt to Reduce Harmonic Distortion and Switching Losses , 2013, IEEE Transactions on Industrial Electronics.