An Energy-Efficient Motor Drive With Autonomous Power Regenerative Control SystemBased on Cascaded Multilevel Inverters and Segmented Energy Storage 研究生 : 吳叡霖 指導教授 : 龔應時 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 49, NO. 1, JANUARY/FEBRUARY 2013 Liming Liu, Senior Member, IEEE, Hui Li, Senior Member, IEEE, Seon-Hwan Hwang, Member, IEEE, and Jang-Mok Kim, Member, IEEE

Outline Abstract Introduction System Description -cascaded-multilevel-inverter-based motor drive with segmented energy storage -System Description -Proposed Power Distribution Strategy and Operation-Mode Analysis and Energy Storage Design -AUTONOMOUS POWER REGENERATIVE CONTROL SYSTEM -PWM method with phase shift control for two auxiliary inverters in each phase -Energy storage voltage balancing control -Simulation results -Experimental test bed -Speed and capacitor voltages with voltage balancing control -Speed and capacitor voltages without voltagebalancing control Conculsion References

Abstract  This paper presents a cascaded-multilevel-inverter-based motor drive system with integrated segmented energy storage.  the energy storage features not only implementing the harmonic compensation in all operating modes but also providing peak power during acceleration and absorbing regenerative power during deceleration  An autonomous power regenerative control system including voltage balancing control of segmented energy storage is developed to perform the smooth power transition between different operation modes and provide accurate speed tracking

Introduction  It is well known that energy storage devices are beneficial in a motor drive system to improve efficiency since they can recover the regenerated energy and provide peak power during transients.  Recently, cascaded multilevel inverters with single energy source and multiple capacitors as energy storage for motor drive applications have been reported, but capacitors in this research were only applied to provide harmonic cancellation. The distribution of real power between the energy source and the energy storage was not achieved, which limits the energy storage’s functions.

cascaded-multilevel-inverter-based motor drive with segmented energy storage

Proposed Power Distribution Strategy and Operation-Mode Analysis and Energy Storage Design

AUTONOMOUS POWER REGENERATIVE CONTROL SYSTEM

Energy storage voltage balancing control

Simulation results

Experimental test bed

Speed and capacitor voltages with voltage balancing control

Speed and capacitor voltages without voltage balancing control

CONCLUSION  In the proposed motor drive system, the energy storage has been designed not only to provide harmonic compensation but also to be capable of recovering regenerative energy during the deceleration mode and reapplying this energy during acceleration transients.  In this control system, the voltage balancing control of the energy storage has been demonstrated to be vital for power distribution, system stability, and reliability.

REFERENCES

 [10] F. Z. Peng, M. S. Shen, and K. Holland, “Application of Z-source inverter for traction drive of fuel cell––Battery hybrid electric vehicles,” IEEE Trans. Power Electron., vol. 22, no. 3, pp. 1054–1061, May  [11] J. Rodriguez, J. S. Lai, and F. Z. Peng, “Multilevel inverters: A survey of topologies, controls and applications,” IEEE Trans. Ind. Electron., vol. 49, no. 4, pp. 724–738, Aug  [12] M. D. Manjrekar, P. K. Steimer, and T. A. Lipo, “Hybrid multilevel power conversion system: A competitive solution for high-power applications,” IEEE Trans. Ind. Appl., vol. 36, no. 3, pp. 834–841, May/Jun  [13] S. Lu, K. Corzine, and M. Ferdowsi, “High power motor drives based on hybrid multilevel converters and direct torque control,” in Proc. IEEE APEC, 2007, pp. 1077–1083.  [14] J. N. Chiasson, B. Ozpineci, L. M. Tolbert, and Z. Du, “Conditions for capacitor voltage regulation in a five-level cascade multilevel inverter: Application to voltage-boost in a PM drive,” in Proc. IEEE IEMDC, 2007, vol. 1, pp. 731–735.  [15] Z. Du, B. Ozpineci, L. M. Tolbert, and J. N. Chiasson, “DC–AC cascaded H-bridge multilevel boost inverter with no inductors for electric/hybrid electric vehicle applications,” IEEE Trans. Ind. Appl., vol. 45, no. 3, pp. 963–970, May/Jun  [16] L. Maharjan, S. Inoue, and H. Akagi, “State-of-Charge (SOC)-balancing control of a battery energy storage system based on a cascaded PWM converter,” IEEE Trans. Power Electron., vol. 24, no. 6, pp. 1628–1636, Jun  [17] H. Akagi, S. Inoue, and T. Yoshii, “Control and performance of a transformerless cascaded PWM STATCOM with star configuration,” IEEE Trans. Ind. Appl., vol. 43, no. 4, pp. 1041–1049, Jul./Aug  [18] L. Maharjan, S. Inoue, and H. Akagi, “A transformerless energy storage system based on a cascade multilevel PWM converter with star configuration,” IEEE Trans. Ind. Appl., vol. 44, no. 5, pp. 1621–1630, Sep./Oct  [19] L. M. Tolbert, F. Z. Peng, T. Cunnyngham, and J. N. Chiasson, “Charge balance control schemes for cascaded multilevel converter in hybrid electric vehicles,” IEEE Trans. Ind. Electron., vol. 49, no. 5, pp. 1058–1064, Oct

REFERENCES  [20] L. M. Tolbert, F. Z. Peng, and T. G. Habetler, “Multilevel converters for large electric drives,” IEEE Trans. Ind. Appl., vol. 35, no. 1, pp. 36–44, Jan./Feb  [21] F. Z. Peng, “A generalized multilevel inverter topology with self voltage balancing,” IEEE Trans. Ind. Appl., vol. 37, no. 2, pp. 611–618, Mar./Apr  [22] L. Liu, H. Li, Z. Wu, and Y. Zhou, “A cascaded photovoltaic system integrating segmented energy storages with self-regulating power allocation control and wide range reactive power compensation,” IEEE Trans. Power Electron., vol. 26, no. 12, pp. 3545–3559, Dec  [23] C. Rech and J. R. Pinherio, “Hybrid multilevel converters: Unified analysis and design considerations,” IEEE Trans. Ind. Electron., vol. 54, no. 2, pp. 1092–1104, Apr  [24] P. Pillay and R. Krishnan, “Modeling, simulation, and analysis of permanent-magnet motor drives, Part I: The permanent-magnet synchronous motor drive,” IEEE Trans. Ind. Appl., vol. 25, no. 2, pp. 265– 273, Mar./Apr  [25] B. K. Bose, Modern Power Electronics and AC Drives. Upper Saddle River, NJ: Prentice-Hall,  [26] J. X. Xu, S. K. Panda, Y. Pan, T. H. Lee, and B. H. Lam, “Amodular control scheme for PMSM speed control with pulsating torque minimization,” IEEE Trans. Ind. Electron., vol. 51, no. 3, pp. 526–536, Jun  [27] T. Knoke, C. Romaus, J. Böcker, A. Dell’Aere, and K. Witting, “Energy management for an onboard storage system based on multi-objective optimization,” in Proc. 32nd Annu. IEEE IECON, Paris, France, Nov. 6–10, 2006, pp. 4677–4682. 