DTC of an FSTPI‐fed induction motor drive with extended speed range

Purpose – The purpose of this paper is to analyze the performance of a new direct torque control (DTC) strategy dedicated to four‐switch three‐phase inverter (FSTPI)‐fed induction motor drives with extended speed range.Design/methodology/approach – The approach is based on the synthesis of a suitable vector selection table in order to reduce torque ripple. The performance analysis is carried out based on three criteria: the total harmonic distortion; the switching loss factor; and the quality factor.Findings – It has been clearly shown that the introduced DTC strategy offers high performance during both transient and steady‐state operations of the FSTPI‐fed induction motor drive, which are almost the same as those yielded by the Takahashi DTC strategy implemented in the same motor fed by a conventional six‐switch three‐phase inverter (SSTPI).Research limitations/implications – The work should be extended by an experimental validation of the simulation results.Practical implications – The established resul...

[1]  S. F. Legowski,et al.  Minimum-loss vector PWM strategy for three-phase inverters , 1994 .

[2]  C.B. Jacobina,et al.  Vector and scalar control of a four switch three phase inverter , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[3]  Jacobus Daniel van Wyk,et al.  A Comparative Investigation of a Three-Phase Induction Machine Drive with a Component Minimized Voltage-Fed Inverter under Different Control Options , 1984 .

[4]  Ahmed Masmoudi,et al.  On the comparison between different space vector PWM strategies implemented in FSTPI‐fed induction motor drives , 2007 .

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

[6]  Seiji Kondo,et al.  Enlarging switching frequency in direct torque-controlled inverter by means of dithering , 1999 .

[7]  J. Holtz,et al.  Sensorless vector control of induction motors at very low speed using a nonlinear inverter model and parameter identification , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[8]  Jan Melkebeek,et al.  Speed sensorless direct torque control of induction motors using an adaptive flux observer , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[9]  Hamid A. Toliyat,et al.  Propulsion system design of electric and hybrid vehicles , 1997, IEEE Trans. Ind. Electron..

[10]  Ahmed Masmoudi,et al.  RFOC implementation in four‐switch three phase inverter‐fed induction motor drive , 2007 .

[11]  Ahmed Masmoudi,et al.  A comprehensive analysis of the inverter switching frequency in Takahashi DTC strategy , 2007 .