基于最大均流法的DC/DC变换器并联系统研究
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摘要
DC／DC变换器的并联技术是提高DC／DC变换器功率等级的有效途径，而如何实现并联模块间输出电流的平均分配是实现并联的核心技术。目前的并联均流技术多是在并联模块参数差异不大的情况下实现的，对于并联系统在并联模块参数差异较大的极限情况下的稳态和暂态性能则很少涉及。
本文着重对并联系统在参数差异很大的条件下的工作情况进行了研究。首先利用基于状态空间平均法的小信号分析对最大均流法的均流原理进行了分析，并对并联系统的稳定性进行了讨论。之后针对已有的均流方案的局限性提出了一种新的具有限流功能的三环控制均流策略。为了验证所提出的方案的可行性，建立了MATLAB仿真平台，利用模块化仿真的思想进行了系统仿真，初步验证了方案的合理性。最后搭建了实际的DC／DC并联系统试验平台，对采用该方案的并联系统的稳态和暂态性能进行了全面的考察，得到了令人满意的结果，证明了具有限流功能的三环控制均流策略是切实可行的。
The application of the paralleled DC/DC converter system is a good way to enhance the power level of the DC/DC converter. How to archive the current sharing between the paralleled converters is the key technology. At present most current sharing are archived in the condition that the differences of the converters are not very large. The performances of the paralleled DC/DC converter system are seldom discussed when the differences of the paralleled modules are large.
This paper analyzes the principle of the current sharing using the small signal analysis based on the state-space average model and discusses the stability of the paralleled DC/DC converter system. Then a novel three-loop current sharing scheme with current limiting function is presented aiming at the limitation of the former current sharing schemes. In order to verify the feasibility of the scheme, a stimulation platform in MATLAB is built and the stimulation is made to test the performance of the paralleled DC/DC converter system on it. Finally an experimental platform is built to test the steady and transient performance of the paralleled DC/DC converter system. The result of the experiment is satisfying. The novel current sharing scheme is proved to be workable.
本文着重对并联系统在参数差异很大的条件下的工作情况进行了研究。首先利用基于状态空间平均法的小信号分析对最大均流法的均流原理进行了分析，并对并联系统的稳定性进行了讨论。之后针对已有的均流方案的局限性提出了一种新的具有限流功能的三环控制均流策略。为了验证所提出的方案的可行性，建立了MATLAB仿真平台，利用模块化仿真的思想进行了系统仿真，初步验证了方案的合理性。最后搭建了实际的DC／DC并联系统试验平台，对采用该方案的并联系统的稳态和暂态性能进行了全面的考察，得到了令人满意的结果，证明了具有限流功能的三环控制均流策略是切实可行的。
The application of the paralleled DC/DC converter system is a good way to enhance the power level of the DC/DC converter. How to archive the current sharing between the paralleled converters is the key technology. At present most current sharing are archived in the condition that the differences of the converters are not very large. The performances of the paralleled DC/DC converter system are seldom discussed when the differences of the paralleled modules are large.
This paper analyzes the principle of the current sharing using the small signal analysis based on the state-space average model and discusses the stability of the paralleled DC/DC converter system. Then a novel three-loop current sharing scheme with current limiting function is presented aiming at the limitation of the former current sharing schemes. In order to verify the feasibility of the scheme, a stimulation platform in MATLAB is built and the stimulation is made to test the performance of the paralleled DC/DC converter system on it. Finally an experimental platform is built to test the steady and transient performance of the paralleled DC/DC converter system. The result of the experiment is satisfying. The novel current sharing scheme is proved to be workable.
引文
[1] Brian T. Irving and Milan M. Jovanovic, "Analysis, design and performance evaluation of droop current-sharing method", In Proc. Of APEC 2000, pp235-241.
[2] John S. Glaser, "Output Plane Analysis of Load-Sharing in Multiple-Module Converter Systems", IEEE Trans. On Power Electronics, Vol. 9, No. 1, Jan. 1994, pp. 43-50.
[3] Jung-Won Kim, Hang-Seok Choi, Bo Hyung Cho, "A Novel Droop Method for Converter Parallel Operation", IEEE Trans. On Power Electronics, VOL. 17, No. 1, JANUARY 2002
[4] Laszlo Balogh, "The UC3902 load share controller and its performance in distributed power systems", Texas Instrument/Unitrode Application Note, 1999.
[5] Mark Jordan, "UC3907 load share IC simplifies parallel power supply design", Texas Instrument/Unitrode Application Note, 1999.
[6] Renhua Wu, T. Kohama, Y. Kodera, T. Ninomiya, and F. Ihara, "Load-current-sharing control for parallel operation of DC-DC converters", In Proc. of PESC 1993, pp. 101-107.
[7] V.Joseph Thottuvelil, George C.Verghese, "Analysis and Control Design of Paralleled DC/DC Converters with Current Sharing", IEEE Trans. On Power Electronics, VOL. 13
[8] ZHANG Chengning, SUN Fengchun, "Principle, Modeling and Control of DC-DC Convertors for EV", Journal of Beijing Institute of Technology, 2000
[9] Z.Moussaoui, I.Bataresh, "AN OVERVIEW OF THE CONTROL SCHEME FOR DISTRIBUTED POWER SYSTEM", from internet
[10] DRAGAN MAKSIMOVIC', ALEKSANDAR M. STANKOVIC, "Modeling and simulation of power electronic converters", from internet
[11] Sudip K. Mazumder, "Nonlinear Analysis and Control of Standalone, Parallel DC-DC, and Parallel Multi-Phase PWM Converters", from internet
[12] ALEKSANDAR M. STANKOVIC', HANOCH LEV-ARI, "Randomized Modulation in Power Electronic Converters", from internet
[13] Martina Baumann, Jahann W. Kolar, "DC Side Current Balancing of Two paralleled Connected Interleaved Three-Phase Three-Switch Buck Type Unity Power Factor PWM Rectifier system", from internet
[14] Stefan Huth, "DC/DC-Converters in Parallel Operation with Digital Load Distribution Control", from internet
[15] Eduard Alarcón, Alberto Poveda, Eva Vidal, Alfonso Romero, Javier Hernanz, "Integrated Current-Programming Controller for DC-DC Converters using Current-mode Analogue Processing Techniques", from internet
[16] Idris Gadoura, Teuvo Suntio, Kai Zenger, "Dynamic System Modelling of Multiloop Operation for Paralleled DC/DC Converters", from internet
[17] I. Gadoura, T. Suntio, K. Zenger, "MODEL UNCERTAINTY AND ROBUST CONTROL OF PARALLELED DC/DC CONVERTERS", from internet
[18] 张占松，蔡宣三，《开关电源的原理与设计》，电子工业出版社
[19] 张占松，《高频开关稳压电源》，广东科技出版社
[20] 李爱文，《现代通信基础开关电源的原理和设计》，科学出版社
[21] 李崇建，《通信电源技术标准及测试》，北京邮电大学出版社
[22] 何希才，姜余祥，《新型稳压电源及其应用》，国防工业出版社
[23] 阮新波，严仰光，《脉宽调制DC／DC全桥变换器的软开关技术》，科学出版社
[24] 吴国忠，潘观立，“开关电源并联系统的数字均流技术”，电源技术应用，2003．1
[25] 高潮，邱关源，“直流电—直流电开关变流器的统一建模方法”，电子学报，1995．2
[26] 卢飞星，朱忠尼，“开关DC-DC变换器并联运行问题的研究”，现代雷达，1998．10
[27] 段敏，“多路DC—DC变换器并联自动均流问题的研究”，空军雷达学院学报，2002．6
[28] 李建飞，徐至新，“具有恒压限流和恒流限压功能的DC-DC变换器”，电力电子技术，1999．2
[29] 石健将，王惠贞，严仰光，“DC／DC模块电源并联研究”，电力电子技术，2002．6
[30] 吴波，穆新华，“IGBT和MOSFET在DC-DC变换器上的应用”，电力电子技术，1998．1
[31] 丁道宏，陈玉水，“并联输出DC／DC谐振变换器的稳态分析和数字仿真”，南京航空航天大学学报，1994．4
[32] 许化民，陈乾宏，阮新波，严仰光，“多路输出DC／DC变换器的并联均流”，电力电子技术，2000．6
[33] 程荣仓，刘正之，“基于自主均流法模块并联的小信号分析”，电力电子技术，2001．4
[34] 汤胜道，汪凤泉，汪忠志，“负载分担下可修的并联系统模型”，东南大学学报，2003．1
[2] John S. Glaser, "Output Plane Analysis of Load-Sharing in Multiple-Module Converter Systems", IEEE Trans. On Power Electronics, Vol. 9, No. 1, Jan. 1994, pp. 43-50.
[3] Jung-Won Kim, Hang-Seok Choi, Bo Hyung Cho, "A Novel Droop Method for Converter Parallel Operation", IEEE Trans. On Power Electronics, VOL. 17, No. 1, JANUARY 2002
[4] Laszlo Balogh, "The UC3902 load share controller and its performance in distributed power systems", Texas Instrument/Unitrode Application Note, 1999.
[5] Mark Jordan, "UC3907 load share IC simplifies parallel power supply design", Texas Instrument/Unitrode Application Note, 1999.
[6] Renhua Wu, T. Kohama, Y. Kodera, T. Ninomiya, and F. Ihara, "Load-current-sharing control for parallel operation of DC-DC converters", In Proc. of PESC 1993, pp. 101-107.
[7] V.Joseph Thottuvelil, George C.Verghese, "Analysis and Control Design of Paralleled DC/DC Converters with Current Sharing", IEEE Trans. On Power Electronics, VOL. 13
[8] ZHANG Chengning, SUN Fengchun, "Principle, Modeling and Control of DC-DC Convertors for EV", Journal of Beijing Institute of Technology, 2000
[9] Z.Moussaoui, I.Bataresh, "AN OVERVIEW OF THE CONTROL SCHEME FOR DISTRIBUTED POWER SYSTEM", from internet
[10] DRAGAN MAKSIMOVIC', ALEKSANDAR M. STANKOVIC, "Modeling and simulation of power electronic converters", from internet
[11] Sudip K. Mazumder, "Nonlinear Analysis and Control of Standalone, Parallel DC-DC, and Parallel Multi-Phase PWM Converters", from internet
[12] ALEKSANDAR M. STANKOVIC', HANOCH LEV-ARI, "Randomized Modulation in Power Electronic Converters", from internet
[13] Martina Baumann, Jahann W. Kolar, "DC Side Current Balancing of Two paralleled Connected Interleaved Three-Phase Three-Switch Buck Type Unity Power Factor PWM Rectifier system", from internet
[14] Stefan Huth, "DC/DC-Converters in Parallel Operation with Digital Load Distribution Control", from internet
[15] Eduard Alarcón, Alberto Poveda, Eva Vidal, Alfonso Romero, Javier Hernanz, "Integrated Current-Programming Controller for DC-DC Converters using Current-mode Analogue Processing Techniques", from internet
[16] Idris Gadoura, Teuvo Suntio, Kai Zenger, "Dynamic System Modelling of Multiloop Operation for Paralleled DC/DC Converters", from internet
[17] I. Gadoura, T. Suntio, K. Zenger, "MODEL UNCERTAINTY AND ROBUST CONTROL OF PARALLELED DC/DC CONVERTERS", from internet
[18] 张占松，蔡宣三，《开关电源的原理与设计》，电子工业出版社
[19] 张占松，《高频开关稳压电源》，广东科技出版社
[20] 李爱文，《现代通信基础开关电源的原理和设计》，科学出版社
[21] 李崇建，《通信电源技术标准及测试》，北京邮电大学出版社
[22] 何希才，姜余祥，《新型稳压电源及其应用》，国防工业出版社
[23] 阮新波，严仰光，《脉宽调制DC／DC全桥变换器的软开关技术》，科学出版社
[24] 吴国忠，潘观立，“开关电源并联系统的数字均流技术”，电源技术应用，2003．1
[25] 高潮，邱关源，“直流电—直流电开关变流器的统一建模方法”，电子学报，1995．2
[26] 卢飞星，朱忠尼，“开关DC-DC变换器并联运行问题的研究”，现代雷达，1998．10
[27] 段敏，“多路DC—DC变换器并联自动均流问题的研究”，空军雷达学院学报，2002．6
[28] 李建飞，徐至新，“具有恒压限流和恒流限压功能的DC-DC变换器”，电力电子技术，1999．2
[29] 石健将，王惠贞，严仰光，“DC／DC模块电源并联研究”，电力电子技术，2002．6
[30] 吴波，穆新华，“IGBT和MOSFET在DC-DC变换器上的应用”，电力电子技术，1998．1
[31] 丁道宏，陈玉水，“并联输出DC／DC谐振变换器的稳态分析和数字仿真”，南京航空航天大学学报，1994．4
[32] 许化民，陈乾宏，阮新波，严仰光，“多路输出DC／DC变换器的并联均流”，电力电子技术，2000．6
[33] 程荣仓，刘正之，“基于自主均流法模块并联的小信号分析”，电力电子技术，2001．4
[34] 汤胜道，汪凤泉，汪忠志，“负载分担下可修的并联系统模型”，东南大学学报，2003．1