Loss manipulation capabilities of deadbeat-direct torque and flux control induction machine drives

This paper investigates the loss manipulation capabilities of deadbeat-direct torque and flux control (DB-DTFC) induction machine drives. For each switching period, a Volt.-sec.-based inverse model provides a range of Volt.-sec. solutions to achieve the desired torque at the end of each switching interval, while stator flux magnitude provides another degree-of-freedom to manipulate machine losses. With a flux-based DB-DTFC loss model, losses can be manipulated each switching period without compromising torque dynamics. For steady-state operation and typical process trajectories, the minimum loss can be achieved with corresponding energy savings. Alternatively, significant losses can be induced rapidly to dissipate kinetic energy in the machine during braking transients. This provides smooth braking torque and decreases deceleration time without requiring additional energy dissipation or storage hardware. DB-DTFC induction machine drives provide an effective and elegant solution for loss manipulation.

[1]  R. D. Lorenz,et al.  Dynamic loss minimization using improved deadbeat-direct torque and flux control for interior permanent magnet synchronous machines , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[2]  J. Luomi,et al.  Loss-Minimizing Flux Level Control of Induction Motor Drives , 2012, IEEE Transactions on Industry Applications.

[3]  R. Lorenz,et al.  Flux-Based Deadbeat Control of Induction-Motor Torque , 2003 .

[4]  Frede Blaabjerg,et al.  On the energy optimized control of standard and high-efficiency induction motors in CT and HVAC applications , 1997 .

[5]  M.M. Swamy,et al.  A novel stopping method for induction motors operating from variable frequency drives , 2000, IEEE Transactions on Power Electronics.

[6]  Thomas A. Lipo,et al.  On-Line Efficiency Optimization of a Variable Frequency Induction Motor Drive , 1985, IEEE Transactions on Industry Applications.

[7]  R.D. Lorenz,et al.  Digital Implementation of Both a Stator and Rotor Flux Linkage Observer and Stator Current Observer , 2007, 2007 IEEE Industry Applications Annual Meeting.

[8]  Robert D. Lorenz,et al.  Using loss location and loss magnitude manipulation for slip gain tuning in field oriented induction machine controllers , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[9]  S. Bolognani,et al.  Automatic tracking of MTPA trajectory in IPM motor drives based on AC current injection , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[10]  Demba Diallo,et al.  A Loss-Minimization DTC Scheme for EV Induction Motors , 2005, IEEE Transactions on Vehicular Technology.

[11]  J. Luomi,et al.  Braking scheme for vector-controlled induction motor drives equipped with diode rectifier without braking resistor , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[12]  R.D. Lorenz,et al.  Digital Implementation of Stator and Rotor Flux-Linkage Observers and a Stator-Current Observer for Deadbeat Direct Torque Control of Induction Machines , 2009, IEEE Transactions on Industry Applications.

[13]  Joachim Holtz,et al.  An efficient braking method for controlled AC drives with a diode rectifier front end , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[14]  Robert D. Lorenz,et al.  Robustness evaluation of deadbeat, direct torque and flux control for induction machine drives , 2009, 2009 13th European Conference on Power Electronics and Applications.

[15]  Robert D. Lorenz,et al.  Deadbeat-direct torque and flux control on low switching frequency induction machine drives using the enhanced flux observer and torque model , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[16]  Ali M Bazzi,et al.  Review of Methods for Real-Time Loss Minimization in Induction Machines , 2010, IEEE Transactions on Industry Applications.

[17]  Jafar Soltani,et al.  Adaptive Nonlinear Direct Torque Control of Sensorless IM Drives With Efficiency Optimization , 2010, IEEE Transactions on Industrial Electronics.