A Comparative Overview of Indirect Field Oriented Control (IFOC) and Deadbeat-Direct Torque and Flux Control (DB-DTFC) for AC Motor Drives

Chinese Journal of Electrical Engineering ›› 2015, Vol. 1 ›› Issue (1): 9-20.

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A Comparative Overview of Indirect Field Oriented Control (IFOC) and Deadbeat-Direct Torque and Flux Control (DB-DTFC) for AC Motor Drives

Yukai Wang, Yuying Shi, Yang Xu, Robert D. Lorenz*

Wisconsin Electric Machines and Power Electronics Consortium (WEMPEC),University of Wisconsin - Madison, Madison, WI, 53706-1572, USA

Online:2015-12-25 Published:2015-12-25
About author:Yukai Wang received the B.S. degree in Electrical Engineering from the Tianjin University, Tianjin, China, in 2011, and the M.S. degree in Mechanical Engineering from the University of Wisconsin-Madison, WI, USA, in 2013. He is currently working toward the Ph.D. degree at the University of Wisconsin- Madison, WI, USA. His research interests include electric machines and drive control technology.
Yuying Shi received the B.S. degree in Electrical Engineering from Tianjin University, Tianjin, China, in 2012, and the M.S. degree in Mechanical Engineering from the University of Wisconsin-Madison, WI, USA, in 2014. She is currently working towards the Ph.D. degree at the University of Wisconsin- Madison. Her research interests include electric machine control, induction machine design and loss minimi- zing techniques.Yang Xu received the B.S. degree in electrical engineering from Zhejiang University, Hangzhou, China, in 2014. He is currently working toward the M.S. degree at the Wisconsin Electrical Machines and Power Electronics Consortium (WEMPEC), University of Wisconsin- Madison.
His research interests include control technologies for induction machines. Robert D. Lorenz received the B.S., M.S., and Ph.D. degrees from the University of Wisconsin-Madison, and the M.B.A. degree from the University of Rochester, NY. Since 1984, he has been on the faculty of the University of Wisconsin-Madison, where he is the Mead Witter Foundation Consolidated Papers Professor of Controls Engineering in the Department of Mechanical Engineering. He is Co-Director of the Wisconsin Electric Machines and Power Electronics Consortium (WEMPEC). Prior to joining the university, he worked 12 years in industry, in Rochester,NY, on high performance drives and synchronized motion control. He has authored over 300 published technical papers and is the holder of 25 patents with eight more pending. He has won 32 IEEE prize paper awards on power electronics, drives, self-sensing, current regulators, motion control, etc.
Dr. Lorenz is a Life-Fellow of the IEEE, was IEEE Division II Director for 2005/2006, was IEEE Industry Applications Society (IAS) President for 2001, a Distinguished Lecturer of the IEEE IAS for 2000/2001. He received the 2003 IEEE IAS Outstanding Achievement Award, 2006 EPE PEMC Outstanding Achievement Award, 2011 IEEE IAS Distinguished Service Award, 2014 IEEE Richard H. Kaufman Technical Field Award, and 2014 EPE Outstanding Achievement Award.Don Tan Dr. Tan is Fellow and Power Products Manager with NGAS. He earned his Ph.D. from Caltech and is IEEE Fellow. “A renowned world expert” in power electronics and energy systems, he is also known for his dual careers as chief technologist and guest professor. He, together with his colleagues, has achieved many highimpact industry firsts with unparalleled performances. He is a frequent keynote speaker and the first author for more than 100 papers and presentations. His research has attracted more than $28M funding. His recent recognitions include NGAS Engineering Choice Award - Innovation of the Year (2014 2nd place), Distinguished Engineer (2011), CIE USA Asian American Engineer of the Year Award (2010), AIAA Space System Award (2008), JANNAF Outstanding Achievement Award in Spacecraft Propulsion (2007), and NGST Distinguished Patent Award and President’s Award for Innovation (both in 2002). His double forward technology was licensed to a major telecommunication company. His recent services include: IEEE Board of Directors (2017- 2018), Division II Director-Elect (2016), EiC (founding) of IEEE JESTPE (2013-present), PELS Nomination Committee Chair (2015-2016), President (2013-2014), Vice President for Operations (2009-2012), Member of Fellow Committee (2010-2013), PELS Vice President for Meetings (2001-2004), and Associated Editor for IEEE TPEL (1996-2000).
Supported by:
rdlorenz@wisc.edu

Abstract

Abstract: Indirect field oriented control (IFOC) has become a widely adopted solution for AC motor drives. Standard IFOC controls torque and rotor flux linkage via q- and d- axis current.Alternatively, deadbeat-direct torque and flux control (DB-DTFC) has emerged as a promising motor control strategy for the future, which manipulates Volt-sec. vector directly. Air-gap torque and stator flux linkage are decoupled and independently controlled over each switching period. Stator flux linkage is used as a separated degree-of-freedom to manipulate losses dynamically without compromising torque dynamics and torque ripple. In voltage-limited operations, direct selection of Volt-sec. allows DB-DTFC to fully utilize the dc bus voltage and produce fast torque. A single control law is used over a wide speed range. This paper aims to provide a comparative overview of the two motor controls regarding their sensitivity to parameters, current- and voltage-limited operation, loss manipulation, and torque ripple during signal injection. Based on the comparison, the ultimate objective is to demonstrate the opportunities and remaining challenges in DB-DTFC.

Key words: Deadbeat-direct torque and flux control, field oriented control, parameter sensitivity, voltage-limited operation, loss manipulation, torque ripple.

Yukai Wang, Yuying Shi, Yang Xu, Robert D. Lorenz*. A Comparative Overview of Indirect Field Oriented Control (IFOC) and Deadbeat-Direct Torque and Flux Control (DB-DTFC) for AC Motor Drives[J]. Chinese Journal of Electrical Engineering, 2015, 1(1): 9-20.

References

[1] D. W. Novotny,T. A. Lipo, Vector Control and Dynamics of AC Drives. New York: Oxford University Press Inc., 1996
[2] B. H. Kenny,R.D. Lorenz, "Stator and rotor flux based deadbeat direct torque control of an induction machine", IEEE Trans. on Ind. Appl., vol.39, no.4, pp. 1093-1101, July/Aug, 2003.
[3] R. D. Lorenz, "The emerging role of deadbeat, direct torque & flux control in the future of induction machine", in Proc. of the Optimization of Electrical and Electronic Equipment Conf., 2008, pp.19-27.
[4] X. Xu,D.W. Novotny, “Implementation of direct stator flux orientation control on a versatile DSP based system,” IEEE Trans. Ind. Appl, vol. 27, no. 4, pp. 694-700, Jul./Aug. 1991.
[5] X. Xu, R. W.De Doncker,and D.W. Novotny, “A stator flux oriented induction machine drive”, in Proc. IEEE PESC’88, vol.2, pp. 870-876, 1988.
[6] R. W.De Doncker, and D. W. Novotny, “The universal field oriented controller,” IEEE Trans. Ind. Appl., vol. 30, no. 1, pp.92-100, Jan./Feb. 1994.
[7] F. Briz, M. W. Degner,R. D. Lorenz, “Analysis and design of current regulators using complex vectors,” IEEE Trans. Ind. Appl., vol. 36, no. 3, pp. 817-825, May/Jun. 2000.
[8] H. Kim, M. W. Degner, J. Guerrero, F. Briz,R. D. Lorenz, “Discrete-time current regulator design for AC machine drives,” IEEE Trans. Ind. Appl., vol. 46, no. 4, pp. 1425-1435, July/Aug. 2010.
[9] M. Depenbrock, “Direct self-control for high dynamics performance of inverter feed AC machines,” ETZ Arch., vol. 7, no. 7, pp. 211-218, 1985.
[10] I. Takahashi,T. Naguchi,“A new quick-response and high efficiency control strategy of an induction motor,” IEEE Trans. Ind. Appl., vol. IA-22, pp. 820- 827, Sept./Oct. 1986.
[11] Y. S. Lai, "A new approach to direct torque control of induction motor drives for constant inverter switching frequency and torque ripple reduction," IEEE Trans Energy Conv., vol. 16, no. 3, pp. 220-227, Sept. 2001.
[12] D. Cascadei, G. Serra, A. Stefni, A. Tani,L. Zarri, “DTC drives for wide speed range applications using a robust flux-weakening algorithm”, IEEE Trans. Ind. Electron., vol. 54, no.5, pp.2451-2461, Oct, 2007.
[13] Z. Xu,M. F. Rahman, “Direct torque and flux regulation of an IPM synchrnous motor drive using variable control approach”, IEEE Trans. Power Electron., vol. 22, no.6, pp.2486-2498, Nov, 2007.
[14] T. Habetler, F. Profumo, M. Pastorelli,and L. Tolbert, "Direct torque control of induction machines using space vector modulation," IEEE Trans. Ind. Appl, vol. 28, no. 5, Sept./Oct. 1992.
[15] T. Habetler, F. Profumo,M. Pastorelli, "Direct torque control of induction machines over a wide speed range," in Proc. IEEE Ind.Applic. Soc. Annual Meeting, vol.1 pp.600-606, 1992.
[16] G. Griva, T. Habetler, F. Profumo,M. Pastorelli, "Performance evaluation of a direct torque controlled drive in the continuous PWM-square wave transition region", IEEE Trans. Power Electron., vol. 10, no. 4, pp. 237-244, Jul. 1995.
[17] J. S. Lee, C. H. Choi, J. K. Seok,R. D. Lorenz, "Deadbeat-direct torque and flux control of with discrete time stator current and stator flux linkage observers,” IEEE Trans. Ind. Appl., vo.47, no.4, pp. 1749-1758, Jul./Aug. 2011.
[18] P. L. Jansen,R. D. Lorenz, “A physically insightful approach to the design and accuracy assessment of flux observers for field oriented induction machine drives,” IEEE Trans. Ind. Appl., vol. 30, no. 1 pp. 101-110, Jan./Feb. 1994.
[19] N. T. West,R. D. Lorenz, “Digital implementation of stator and rotor flux-linkage observers and a stator- current observer for deadbeat direct torque control for induction machines,” IEEE Trans. Ind. Appl., vol.45, no. 2, pp. 729- 736, May/April. 2009.
[20] Y. Wang, S. Tobayashi, R.D. Lorenz, “A low-switchingfrequency flux observer and torque model of deadbeat, direct torque and flux control on induction machine drives”, IEEE Trans. on Ind. Appl., vol. 51, no.3, Jan/Feb, 2015.
[21] R. Krishnan,F. C. Doran, “Study of parameter sensitivity in high-performance inverter-fed induction motor drive systems,” IEEE Trans. Ind.Appl., no. 4, pp. 623-635, 1987.
[22] K. B. Nordin, D. W. Novotny, D. S. Zinger, “The influence of motor parameter deviations in feedforward field orientation drive systems,” IEEE Trans. Ind.Appl., no. 4, pp. 1009-1015, 1985.
[23] R.D. Lorenz, “Tuning of field oriented induction motor controllers for high performance applications,” IEEE Trans. Ind. Appl, vol. IA-22, no. 52, PP. 293-297, Mar./Apr. 1986.
[24] R. D. Lorenz,D. W. Novotny, “Saturation effects in field oriented induction machines,” IEEE Trans. Ind. Appl, vol. 26, no. 2, pp.283-289, Mar./Apr.1990[25] B. E. Heinbokel,and R. D. Lorenz, "Robust evaluation of deadbeat-direct torque & flux control for induction machines," European Power Electronic and Applica- tions (EPE), 2009 13th IEEE, pp.1-10, 2009.
[26] P. Vas, Vector Control of AC Machines. Oxford: Claredon, pp. 124-126, 1990.
[27] X. Xu,D. W. Novotny, “selecting the flux reference for induction machine drives in the field weakening region”, in IEEE Ind. Application. Soc. Annu. Meeting Conf. Rec., 1991, pp.361-367.
[28] S. Kim,S. K. Sul, “Maximum torque control of an induction machine ine the field weakening region”, IEEE Trans. Ind. Applic., vol. 31, no.4, pp.787-794, July/Aug, 1995.
[29] S. Kim,S. K. Sul, “Voltage control strategy for maximum torque operation of an induction machine in the field weakening region”, IEEE Trans. Ind. Electron., vol. 44, no.4, pp.512-518 Aug., 1997.
[30] J. Jung,K. Nam, "A dynamic decoupling control scheme for high-speed operation of induction motors," IEEE Trans. Ind.Electron. 46, pp. 100-110, 1999.
[31] D. R. Seidl,D. A. Kaiser, R.D. Lorenz, “one step optimal space vector PWM current regulation using a neural network”, in Proc. IEEE Ind.Applic. Soc. Annu. Meeting, pp. 867-874, 1994.
[32] J. K. Seok, J. S. Kim,S. K. Sul, “overmodulation strategy for high performance torque control”, IEEE Trans. Ind. Electron., vol. 13, no.4, July, pp.786-792, 1998.
[33] J. Holtz, W. Lotzkat,A. M. Khambadkone, “On continuous control of PWM inverter in the over-modulation range including the six-step model,” IEEE Trans. Power Electron., vol. 8, no. 4, pp.546-553, Oct. 1994.
[34] A. Khambadkone,J. Holtz, “Compensated synch- ronous PI current controller in overmodulation range and six-step operation of space vector modulation based vector-controlled drive,” IEEE Trans. Ind. Electron., vol. 49, no. 3, pp. 574- 580, Jun., 2002[35] J. K. Seok, and S. H. Kim, “Hexagon voltage manipulating control for ac motor drives operating at voltage limit”, IEEE Trans. Ind. Applic., vol.51, no.5, pp.3829-3837, Sept/Oct. 2015.
[36] C. H. Choi, J. K. Seok,R. D. Lorenz, “Wide- speed direct torque and flux control for interior PM synchrnous motors operating at voltage and current limits”, IEEE Trans. Ind. Applic., vol.49, no.1, pp.109-117, 2013.
[37] J. S. Lee, R. D. Lorenz,M. A. Valenzuela, “Timeoptimal and loss-minimizing deadbeat-direct torque and flux control for interior permanent magnet synchrnous machines”, IEEE Trans. Ind. Applic., vol.50, no.3, pp.1880-1890, 2014.
[38] H. Ghassemi,S. Vaez-Zadeh, “A very fast direct torque control for interior permanent magnet synchrnous motors start up”, Energy Covers. Manag., vol. 46, no. 5, pp. 715-726, Mar. 2005.
[39] Z. D. Hurst, “Evaluation of dynamic trajectires for deadbeat direct torque and flux control during voltage limited operation,” M.S. thesis, WEMPEC, Univ. Wisconsin, Madison, WI, USA, 2011.
[40] T. R. Obermann, Z. D. Hurst,R. D. Lorenz, “Deadbeatdirect torque & flux control motor drive over wide speed, torque and flux operating space using a single control law,” in IEEE Energy Convers. Congr. Expo., Sep. 2010, pp. 215-222.
[41] F. J. Nola, “Power factor control system for AC induction motors,” Patent Number: 4,052,648, July 19th, 1976.
[42] D. S. Kirschen, D. W. Novotny,T. A. Lipo, “On- line efficiency optimization of a variable frequency induction motor drive,” IEEE Trans. on Ind. Appl., vol. IA-21, no. 3, pp. 610-616, May 1985.
[43] D. S. Kirschen, D. W. Novotny,T. A. Lipo, “Optimal efficiency control of an induction motor drive,” IEEE Trans. Energy Convers., vol. EC-2, no. 1, pp. 70-76, Mar. 1987.
[44] G. Sousa, B. Bose,J. Cleland, “Fuzzy logic based on-line efficiency optimization control of an indirect vector-controlled induction motor drive,” IEEE Trans. Ind. Electron., vol. 42, no. 2, pp. 192-198, Apr. 1995.
[45] G. O. Garcia, J. C.Mendes Luis, R. M. Stephan, and E. H. Watanabe, “An efficient controller for an adjustable speed induction motor drive,” IEEE Trans. Ind. Electron., vol. 41, no. 5, pp. 535-539, Oct. 1994.
[46] M. N. Uddin,S. W. Nam, “New online loss-minimizationbased control of an induction motor drive,” IEEE Trans. Ind. Electron., vol. 23, no. 2, pp. 926-933, Mar. 2008.
[47] C. Chakraborty,Y. Hori, “Fast efficiency optimization techniques for the indirect vector- controlled induction motor drives,” IEEE Trans. Ind. Appl., vol. 39, no. 4, pp. 1070-1076, Jul./Aug. 2003.
[48] F. Abrahamsen, F. Blaabjerg, J. Pedersen, P. Grabowski,P. Thogersen, “On the energy optimized control of standard and high efficiency induction motors in CT and HVAC applications,” IEEE Trans. on Ind. Appl., vol 34, no. 4, pp 822-831, Jul./Aug. 1998.
[49] R. Mecke, “Energy-efficient control of induction machines with variable rotor flux,” Proc. of the 15th European Conf. on Power Electronics and Application (EPE), Sep. 2-6, Lille, France, 2013, pp.1-10[50] I. Kioskeridis, and N. Margaris, “ Loss minimization in induction motor adjustable-speed drives,” IEEE Trans. on Ind. Appl., vol 43, no. 1, pp 226-231, 1996.
[51] J. F. Stumper,R. Kennel, "Real-time dynamic efficiency optimization for induction machines", American Control Conference (ACC), 2013, on page(s): 6589-6594.
[52] S. M. Yang,R. D. Lorenz, "AC induction servo sizing for motion control applications via loss minimi- zing real-time flux control", IEEE Trans. Ind. Appl., vol. 28, no. 3, pp.589-593 1992.
[53] W. Xu,R. D. Lorenz, “Dynamic loss minimization using improved deadbeat, direct-torque and flux control for interior permanent-magnet synchronous machines”, IEEE Trans. on Ind. Appl. vol. 50, no.2, Mar/Apr 2014.
[54] Y. Wang, T. Ito,R. D. Lorenz, “Loss manipulation capabilities of deadbeat-direct torque and flux control induction machine drives”, IEEE Trans. on Ind. Appl., vol. 51, no.6, pp. 4554-4566, 2015.
[55] M. Saur, B. Piepenbreier, W. Xu,R. D. Lorenz, “Implementation and evaluation of inverter loss modeling as part of DB-DTFC for loss minimization each switching period”, 16th European Conference on Power Electronics and Applications (EPE’14), Sept 2014.
[56] B. F. Bradley, "Loss minimizing flux trajectories for repetitive known cyclical loading in deadbeat-direct torque and flux control (DB-DTFC) induction machine drives," Master's Thesis, Univ. Wisconsin, Madison, WI, 2012.
[57] P. E. Ozimek, J. D. Hoffman, Y. Shi,R. D. Lorenz,“Dynamic loss minimizing control of DB-DTFC IM drives using a flux command look ahead filter,” in International Conference on Electrical Machines and Systems(ICEMS), Oct. 2014.
[58] Y. Shi, Y. Wang,R. D. Lorenz, “Loss minimization for dynamic load trajectories on induction machine drives without torque performance degradation,” in IEEE 11th International Conference on Power Electronics and Drive Systems (PEDS),2015.
[59] H. Kim, M. C. Harke,R. D. Lorenz, “Sensorless control of interior permanent magnet machine drives with zero-phase lag position estimation”, IEEE Trans. on Ind. Appl., vol. 39, no. 6, pp. 1726-1733, Nov/Dec, 2003.
[60] R.W. Hejny,R. D. Lorenz, “Evaluating the practical low-speed limits for back-EMF tracking- based sensorless speed control using drive stiffness as a key metric”, IEEE Trans. on Ind. Appl., vol. 47, no. 3, pp. 1337-1343, May/Jun. 2011.
[61] T. Matsuo,T. A.Lipo “A rotor parameter identification scheme for vector-controlled induction motor drives,” IEEE Trans. Ind. Appl., vol. IA-21, no.4, pp.624-632, May/Jun. 1985.
[62] P. L. Jansen,R. D. Lorenz, “Transducerless position and velocity estimation in induction and salient AC machines,” IEEE Trans. Ind.Appl., vol. 31, pp. 240-247, 1995.
[63] F. Briz, A. Diez,M. W. Degner, “Dynamic operation of carrier-signal-injection-based sensorless direct field-oriented AC drives,” IEEE Trans. Ind.Appl., vol. 36, pp. 1360-1368, 2000.
[64] A. Consoli, G. Scarcella,A. Testa, “Industry application of zero-speed sensorless control techniques for PM synchronous motors,” IEEE Trans. Ind.Appl., vol. 37, pp. 513-521, 2001.
[65] A. Consoli, G. Scarcella, G. Bottiglieri,A. Testa, “Harmonic Analysis of Voltage Zero-Sequence-Based Encoderless Techniques,” IEEE Trans. Ind.Appl., vol. 42, pp. 1548-1557, 2006.
[66] M. W. Degner, “Flux, position and velocity estimation in ac machines using carrier signal injection,” Ph. D Thesis, Univ. Wisconsin, Madison, WI, 1998.
[67] M. J. Corley,R. D. Lorenz, “rotor position and velocity estimation for a salient-pole permanent magnet synchronous machine at standstill and high speeds” IEEE Trans. Ind. Appl., vol.34, no. 4, 1998.
[68] H. Toliyat,A. Hosseinyu, “Parameter estimation algorithm using spectral analysis for vector controlled induction motor drives,” in Proc. IEEE Int. Symp. Ind. Electron., pp. 90-95, Jun. 1993.
[69] T. Aihara, A. Toba, T. Yanase, A. Mashimo,K. Endo, “Sensorless torque control of salient-pole synch-ronous motor at zero-speed operation,” IEEE Trans. Power Electron.vol. 14, pp. 202-208, 1999.
[70] J. Ji-Hoon, S. Seung-Ki, H. Jung-Ik, K. Ide,M. Sawamura, "Sensorless drive of surface-mounted permanent-magnet motor by high-frequency signal injection based on magnetic saliency," IEEE Trans. Ind.Appl., vol. 39, pp. 1031-1039, 2003.
[71] J. Ji-Hoon, H. Jung-Ik, M. Ohto, K. Ide,S. Seung-Ki, “Analysis of permanent-magnet machine for sensorless control based on high-frequency signal injection,” IEEE Trans. on Ind.Appl., vol. 40, pp. 1595-1604, 2004.
[72] Y. Wang, N. Niimura,R. D. Lorenz, “Real-time parameter identification and integration on deadbeat, direct torque and flux control without inducing additional torque ripple”, IEEE Energy Conversion Congress and Exposition (ECCE), pp. 2184-2191, Montreal, Canada, 2015.
[73] S. Ogasawara,H. Akagi, “Implementation and position control performance of a position-sensorless IPM motor drive system based on magnetic saliency”, Trans. on Ind. Appl. vol. 34, no.4, Jul/Aug, 1998.
[74] H. A. Toliyat, M. S. Arefeen, K. M. Rahman,D. Figoli, “Rotor time constant updating scheme for a rotor flux oriented induction motor drive”, Trans. on Power Electron. Vol. 14, no.5, Sept, 1999.

A Comparative Overview of Indirect Field Oriented Control (IFOC) and Deadbeat-Direct Torque and Flux Control (DB-DTFC) for AC Motor Drives

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