Nonlinear control for the front end power supplies of magnetic imaging resonance gradient amplifiers

doi:10.16511/j.cnki.qhdxxb.2016.21.029

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Abstract A nonlinear digital PID single loop control method was developed to improve the dynamic load response of the front end power supply of magnetic imaging resonance (MRI) gradient amplifiers with the controller parameters are based on the exponential functions of the error. The dynamic load response is improved by an inner-loop current controller added to the nonlinear digital PID controller. The two control methods are verified in a 120 V/30 A prototype of the power supply for a step load current change and compared with the dynamic physical limits of the system. The results indicate that the controller has better dynamic performance which is closer to the dynamic physical limits of the system that the original nonlinear PID controller.

Keywords power supply dynamic response dynamic physical limits nonlinear PID control current-mode control

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TM464

Issue Date: 15 March 2016

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	SHI Hongliang
	XU Jing
	CUI Bin
	JIANG Xiaohua

Cite this article:

SHI Hongliang,XU Jing,CUI Bin, et al. Nonlinear control for the front end power supplies of magnetic imaging resonance gradient amplifiers[J]. Journal of Tsinghua University(Science and Technology), 2016, 56(3): 306-311,317.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2016.21.029 OR http://jst.tsinghuajournals.com/EN/Y2016/V56/I3/306

[1] Sabate J, LIU Yunfeng, Wiza M. Power supply with independently regulated multiple outputs[C]//Power Electronics and Applications, European Conference (EPE). Aalborg, Denmark:IEEE Press, 2007:1-8.
[2] 李思奇, 蒋晓华. 磁共振成像系统中梯度放大器的控制算法[J]. 清华大学学报(自然科学版), 2011, 51(04):571-576.LI Siqi, JIANG Xiaohua. Control algorithm for gradient amplifiers in magnetic resonance imaging systems[J]. J Tsinghua Univ:Sci and Tech, 2011, 51(04):571-576. (in Chinese)
[3] Sabate J, Schutten M, LI Qiming, et al. Resonant power supply for magnetic resonance imaging gradient drivers[C]//Power Electronics Specialist Conference (PESC). Acapulco, Mexico:IEEE Press, 2003:1815-1820.
[4] Castilla M, Garcia De Vicuna L, Guerrero J M, et al. Designing VRM hysteretic controllers for optimal transient response[J]. IEEE Transactions on Industrial Electronics, 2007, 54(3):1726-1738.
[5] Corradini L, Orietti E, Mattavelli P, et al. Digital hysteretic voltage-mode control for DC-DC converters based on asynchronous sampling[J]. IEEE Transactions on Power Electronics, 2009, 24(1):201-211.
[6] 李虹, 尚佳宁, 陈姚, 等. 基于fal函数的非线性PI控制器在DC-DC变换器中的应用[J]. 电工技术学报, 2014, 29(S1):326-331.LI Hong, SHANG JiaNing, CHEN Yao, et al. The applications of nonlinear PI controller based on the fal function in the DC-DC converter[J]. Transactions of China Electrotechnical Society, 2014, 29(S1):326-331. (in Chinese)
[7] Arikatla V P, Abu Qahouq J A. Adaptive digital proportional-integral-derivative controller for power converters[J]. IET Power Electronics, 2012, 5(3):341-348.
[8] 李崇坚, 郭国晓, 高龙, 等. 电力系统非线性PID励磁控制器[J]. 清华大学学报(自然科学版), 2000, 40(3):48-51.LI Chongjian, GUO GuoXiao, GAO Long, et al. Nonlinear PID exciting controller for power system[J]. J Tsinghua Univ:Sci and Tech, 2000, 40(03):48-51. (in Chinese)
[9] Meyer E, Zhang Z, Liu Y. An optimal control method for Buck converters using a practical capacitor charge balance technique[J]. IEEE Transactions on Power Electronics, 2008, 23(4):1802-1812.
[10] Corradini L, Babazadeh A, Bjeleti? A, et al. Current-limited time-optimal response in digitally controlled DC-DC converters[J]. IEEE Transactions on Power Electronics, 2010, 25(11):2869-2880.
[11] Yousefzadeh V, Babazadeh A, Ramachandran B, et al. Proximate time-optimal digital control for synchronous Buck DC-DC converters[J]. IEEE Transactions on Power Electronics, 2008, 23(4):2018-2026.
[12] Pitel G E, Krein P T. Minimum-time transient recovery for DC-DC converters using raster control surfaces[J]. IEEE Transactions on Power Electronics, 2009, 24(12):2692-2703.
[13] Bibian S, Jin H. High performance predictive dead-beat digital controller for DC power supplies[J]. IEEE Transactions on Power Electronics, 2002, 17(3):420-427.
[14] Saggini S, Stefanutti W, Tedeschi E, et al. Digital deadbeat control tuning for DC-DC converters using error correlation[J]. IEEE Transactions on Power Electronics, 2007, 22(4):1566-1570.
[15] 吴忠, 刘朝辉. 基于电流模式的DC/DC升压变换器非线性PI控制[J]. 中国电机工程学报, 2011,31(33):31-36. WU Zhong, LIU Chaohui. Nonlinear PI control of DC/DC boost power converters based on current mode[J].Proceedings of the CSEE, 2011,31(33):31-36. (in Chinese)
[16] Galiano Zurbriggen I, Ordonez M, Anun M. Dynamic physical limits of buck converters:the T0/4 transient benchmark rule[C]//Applied Power Electronics. Conference and Exposition (APEC). Long Beach, CA, USA:IEEE Press, 2013:421-428.
[17] SHI Hongliang, CUI Bin, ZENG Yingyu, et al. Dynamic physical limits of a phase-shifted full bridge circuit for power supply of magnetic imaging resonance gradient amplifiers[C]//Annual Conference of the IEEE Industrial Electronics Society (IECON). Yokohama, Japan:IEEE Press, 2015:4900-4904.

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