Browse > Article
http://dx.doi.org/10.6113/JPE.2016.16.5.1851

Ripple Analysis and Control of Electric Multiple Unit Traction Drives under a Fluctuating DC Link Voltage  

Diao, Li-Jun (Department of Electronic Engineering, Beijing Jiaotong University)
Dong, Kan (Locomotive and Car Research Institute, China Academy of Railway Science)
Yin, Shao-Bo (Department of Electronic Engineering, Beijing Jiaotong University)
Tang, Jing (Department of Electronic Engineering, Beijing Jiaotong University)
Chen, Jie (Department of Electronic Engineering, Beijing Jiaotong University)
Publication Information
Journal of Power Electronics / v.16, no.5, 2016 , pp. 1851-1860 More about this Journal
Abstract
The traction motors in electric multiple unit (EMU) trains are powered by AC-DC-AC converters, and the DC link voltage is generated by single phase PWM converters, with a fluctuation component under twice the frequency of the input catenary AC grid, which causes fluctuations in the motor torque and current. Traditionally, heavy and low-efficiency hardware LC resonant filters parallel in the DC side are adopted to reduce the ripple effect. In this paper, an analytical model of the ripple phenomenon is derived and analyzed in the frequency domain, and a ripple control scheme compensating the slip frequency of rotor vector control systems without a hardware filter is applied to reduce the torque and current ripple amplitude. Then a relatively simple discretization method is chosen to discretize the algorithm with a high discrete accuracy. Simulation and experimental results validate the proposed ripple control strategy.
Keywords
Control algorithm discretization; Fluctuating DC link; Ripple control; Traction drives; Vector control;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. Klima, "Analytical investigation of influence of DC link voltage ripple on PWM VSI fed induction motor drive," Proc. of IEEE Conference on Industrial Electronics and Applications, pp. 1-7, 2006.
2 P. Dahler and G. Knapp, "New generation of compact low voltage IGBT converter for traction applications," European Conference on Power Electronics and Applications, pp. 1-9, 2005.
3 K. Samir and L. Pablo, "Multicarrier PWM with DC link ripple feed-forward compensation for multilevel inverters," IEEE Trans. Power Electron., Vol.23, No.1, pp. 52-59, Jan. 2008.   DOI
4 P. N. Enjeti and W. Shireen, "A new technique to reject DC link voltage ripple for inverters operating on programmed PWM waveforms," IEEE Trans. Power Electronics, Vol.7, No.1, pp.171-180, Jan. 1992.   DOI
5 M. E. de Oliveira Filho, J. R. Gazoli, A. J. S. Filho, and E. R. Filho "A control method for voltage source inverter without dc link capacitor," in conf. Power Electronics Specialists, pp. 4432-4437, 2008.
6 B. Wang, Y. Yu, W. Sun, G. L. Wang, and D. G. Xu, "A modified discretization method for discrete full-order flux observer of induction motor," in 17th European Conf. Power Electronics and Applications (EPE'15 ECCE), pp. 1-6, 2015.
7 G. F. Franklin, J. D. Powell, and M. Workman, Digital Control of Dynamic Systems, 3rd ed., Addison-Wesley, Chap. 6. 1997.
8 A. Kimura, "A study on the stabilization of control systems for induction motor-driven rolling stock," Electrical Engineering in Japan, Vol.110, No.4, pp.101-110, 1990.   DOI
9 B. K. Bose, Modern Power Electronics and AC Drives, China Machine Press, Chap. 2, 2005.
10 F. J. Rodriguez, E. Bueno, M. Aredes, and L. G. B. Rolim, "Discrete-time implementation of second order generalized integrators for grid converters," in 34th Annu. Conf. IEEE Industrial Electronics, pp. 76-181, 2008.
11 A. G. Yepes, F. D. Freijedo, J. Doval-Gandoy, O. Lopez, J. Malvar, and P. Fernandez-Comesana, "Effects of discretization methods on the performance of resonant controllers," IEEE Trans. Power Electron., Vol. 25, No. 7, pp. 1692-1712, Jul. 2010.   DOI