LLC谐振型变换器的最优轨迹控制研究
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摘要
针对轨迹控制在LLC谐振变换器应用过程中需时时检测谐振电流,谐振电压,输入电压和输出电压等物理量,在实际中很难实现的问题,本文采用一种简化的轨迹控制策略,在稳态时,应用PI补偿器来控制,当出现负载突变时,基于状态平面分析,仅需检测负载侧的电流就可实现对系统的有效控制,并取得了良好的动态性能。在Matlab/Simulink环境下搭建了仿真模块,仿真结果表明了此优化方法的有效性和正确性。
Aiming at the optimal trajectory control is difficult to implement,because the value of resonant current,resonant voltage,input voltage,output voltage are sensed at every instantaneous. The simplified optimal trajectory control(SOTC)is adopted in this paper. With this approach,the PI is used during the steady-state,the SOTC is take during load transients. Based on the state-plane analysis,the effective control is achieved when the current of load is sensed only. Thus,the good dynamic performance is obtained. In the Matlab/Simulink,the simulation module is built. The result shows the correctness and effectiveness of this method.
Aiming at the optimal trajectory control is difficult to implement,because the value of resonant current,resonant voltage,input voltage,output voltage are sensed at every instantaneous. The simplified optimal trajectory control(SOTC)is adopted in this paper. With this approach,the PI is used during the steady-state,the SOTC is take during load transients. Based on the state-plane analysis,the effective control is achieved when the current of load is sensed only. Thus,the good dynamic performance is obtained. In the Matlab/Simulink,the simulation module is built. The result shows the correctness and effectiveness of this method.
引文
[1] Yong-Su Noh,Min-Seuk Oh,Moo-Yong Ryu,Jun-Gu Kim,Chung-Yuen Won. Isolated Bi-di-rectional DC/DC Converter using Quasi-ResonantZVS[D]. Dept. of Information and CommunicationEngineering Sung kyunkwan University,2014.
[2]张方华,严仰光.直流变压器的研究与实现[J].电工技术学报. 2005,20(7):76-80.
[3] Weiyi Feng,Fred. C.Lee,Paolo Mattavelli,et al.Simplified Optimal Trajectory Control(SOTC)forLLC Resonant Converters[J]. IEEE Transactions onPower Electronics,2013,28(5):2415-2426.
[4] Weiyi Feng,Fred. C.Lee,,Paolo Mattavelli,et al.Optimal Trajectory Control of LLC ResonantConverter for Soft Start-up[J]. IEEE Transactionson Power Electronics,2014,29(3):457-466.
[5] Bo Yang.Topology Investigation for Front End DC/DC Power Conversion for Distributed Power System[D].Virginia Polytechnic Institute and StateUniversity,2003.
[6]李菊,阮新波.全桥LLC谐振变换器的混合式控制策略[J].电工技术学报,2013(4):72-79.
[7] UCC25600 8-pin High-performance resonantmode controller,Texas instruments.
[8] Fang X,Hu H,Shen Z J,et al.Operation modeanalysis and peak gain approximation of theLLC resonant converter[J]. IEEE Trans. on PowerElectronics,2012,27(4):1985-1995.
[9] Hao C,Sng E K K,Taeng K J,et al. Generalized.optimal trajectory control for closed loop control ofseries-parallel resonant converter[J]. IEE ETrans.Power Electron,2006,21(5):1347-1355.
[10]Bing Lu,Wenduo Liu,Yan Liang,Fred C.Lee,Ja-cobus D. van Wyk,et al. Optimal design methodolo-gy for LLC resonant converter[C]//In proc. IEEEAppl. Power Electron. Conf.,Mar,2006:553-558.
[11]张治国,谢运祥,袁兆梅.高频LCC谐振变换器的分析与轨迹控制[J].中国电机工程学报,2011,31(27):52-58.
[12]Yang B,Lee Fred C,Zhang A J,et al. LLC resonant converter for front end DC-DC conversion[C]. In IEEE-APEC 2002:1108-1112.
[13]韩文祥,王春芳.半桥电流馈入型LLC变换器的补偿电路设计[J].电源学报,2015,13(1):114-118.
[14]王晓昱,刘庆想,张政权,等.全桥LLC串联谐振的电容器充电电源的研究[J].计算机仿真,2015,32(5):136-140,181.
[15]肖文英,董海兵.全桥LLC谐振变流器的简化时域模型及其应用[J].华东师范大学学报:自然科学版,2013(5):119-129.
[16]王皓,朱金大,侯凯,等.基于混合控制式交错并联LLC谐振变换器的充电模块研制[J].电力系统自动化,2017,41(7):108-113.
[17]张晋玮,周东方.基于移相控制的全桥LLC倍压谐振变换器[J].电力电子技术,2013,47(5):94-96,103.
[2]张方华,严仰光.直流变压器的研究与实现[J].电工技术学报. 2005,20(7):76-80.
[3] Weiyi Feng,Fred. C.Lee,Paolo Mattavelli,et al.Simplified Optimal Trajectory Control(SOTC)forLLC Resonant Converters[J]. IEEE Transactions onPower Electronics,2013,28(5):2415-2426.
[4] Weiyi Feng,Fred. C.Lee,,Paolo Mattavelli,et al.Optimal Trajectory Control of LLC ResonantConverter for Soft Start-up[J]. IEEE Transactionson Power Electronics,2014,29(3):457-466.
[5] Bo Yang.Topology Investigation for Front End DC/DC Power Conversion for Distributed Power System[D].Virginia Polytechnic Institute and StateUniversity,2003.
[6]李菊,阮新波.全桥LLC谐振变换器的混合式控制策略[J].电工技术学报,2013(4):72-79.
[7] UCC25600 8-pin High-performance resonantmode controller,Texas instruments.
[8] Fang X,Hu H,Shen Z J,et al.Operation modeanalysis and peak gain approximation of theLLC resonant converter[J]. IEEE Trans. on PowerElectronics,2012,27(4):1985-1995.
[9] Hao C,Sng E K K,Taeng K J,et al. Generalized.optimal trajectory control for closed loop control ofseries-parallel resonant converter[J]. IEE ETrans.Power Electron,2006,21(5):1347-1355.
[10]Bing Lu,Wenduo Liu,Yan Liang,Fred C.Lee,Ja-cobus D. van Wyk,et al. Optimal design methodolo-gy for LLC resonant converter[C]//In proc. IEEEAppl. Power Electron. Conf.,Mar,2006:553-558.
[11]张治国,谢运祥,袁兆梅.高频LCC谐振变换器的分析与轨迹控制[J].中国电机工程学报,2011,31(27):52-58.
[12]Yang B,Lee Fred C,Zhang A J,et al. LLC resonant converter for front end DC-DC conversion[C]. In IEEE-APEC 2002:1108-1112.
[13]韩文祥,王春芳.半桥电流馈入型LLC变换器的补偿电路设计[J].电源学报,2015,13(1):114-118.
[14]王晓昱,刘庆想,张政权,等.全桥LLC串联谐振的电容器充电电源的研究[J].计算机仿真,2015,32(5):136-140,181.
[15]肖文英,董海兵.全桥LLC谐振变流器的简化时域模型及其应用[J].华东师范大学学报:自然科学版,2013(5):119-129.
[16]王皓,朱金大,侯凯,等.基于混合控制式交错并联LLC谐振变换器的充电模块研制[J].电力系统自动化,2017,41(7):108-113.
[17]张晋玮,周东方.基于移相控制的全桥LLC倍压谐振变换器[J].电力电子技术,2013,47(5):94-96,103.