Buck/Boost双向DC/DC变换器的数字控制研究
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摘要
Buck/Boost双向DC/DC变换器在电动车电机驱动系统和车载充电系统中具有重要的应用前景。为实现该变换器控制与驱动电机的协同控制,提出了一种采用低成本数字控制芯片STM32F103实现Buck/Boost双向DC/DC变换器数字控制的方法,并进行了变换器设计和试验研究。研究结果表明,在电压外环和电流内环的双闭环控制策略下,该变换器可以满足稳态运行控制,以及参考电压突变和负载突变模式下的动态运行控制。采用数字控制的方式有望使得DC/DC变换器的控制与电机的控制能共享控制器资源,有利于实现它们在控制方法上的耦合,进一步提升电动车电机驱动系统控制的灵活度。
The Buck/Boost bidirectional DC-DC converter has important application prospects in the electric vehicle motor drive system and on-board battery charging system. To achieve the coordinated control of DC-DC converter and drive motor,a low-cost digital control chip STM32 F103 based digital control method was applied for controlling the Buck/Boost bidirectional DC-DC converter. The converter design and experimental testing results were also provided. The experimental results show that the converter can be controlled stably with the current inner loop and voltage outer loop based dual closed-loop control strategy,both at the steady state operation case and dynamic operation cases like reference voltage mutation and load mutation. Thus,with the proposed digital control method,it is expected to enable DC-DC converter control and motor control to share controller resources,which is beneficial to realize the coupling of their control methods and further enhance the flexibility of the control of electric vehicle motor drive system.
The Buck/Boost bidirectional DC-DC converter has important application prospects in the electric vehicle motor drive system and on-board battery charging system. To achieve the coordinated control of DC-DC converter and drive motor,a low-cost digital control chip STM32 F103 based digital control method was applied for controlling the Buck/Boost bidirectional DC-DC converter. The converter design and experimental testing results were also provided. The experimental results show that the converter can be controlled stably with the current inner loop and voltage outer loop based dual closed-loop control strategy,both at the steady state operation case and dynamic operation cases like reference voltage mutation and load mutation. Thus,with the proposed digital control method,it is expected to enable DC-DC converter control and motor control to share controller resources,which is beneficial to realize the coupling of their control methods and further enhance the flexibility of the control of electric vehicle motor drive system.
引文
[1]周鹏飞,钟再敏.基于LM5175的Buck/Boost车用开关电源设计[J].电子科技,2016,29(2):129-133.
[2]吴帆.移相全桥ZVS软开关DC-DC稳压电源的设计与分析[J].通信电源技术,2015,32(4):92-95.
[3]陆治国,祝万平,刘捷丰,等.一种新型交错并联双向DC-DC变换器[J].中国电机工程学报,2013,33(12):39-46.
[4]田春光,田利,李德鑫,等.基于混合储能系统跟踪光伏发电输出功率的控制策略[J].电工技术学报,2016,31(14):75-83.
[5]王淑娟,景芳毅.从度电成本分析光伏平价的路径[J].太阳能,2016,37(8):9-16.
[6]陈章勇,许建平,吴建雪,等.耦合电感零输入纹波高增益非隔离DC-DC变换器[J].中国电机工程学报,2014,34(33):5836-5845.
[7]葛智元,周立新,赵巍,等.超级电容器与蓄电池并联混合电源放电特性[J].电源技术,2014,38(5):886-889.
[8]胡斌,杨中平,黄先进,等.用于超级电容储能系统的三电平双向直流变换器及其控制[J].电工技术学报,2015,30(8):84-89.
[9]侯聂,宋文胜,武明义.双向全桥DC-DC变换器的负载电流前馈控制方法[J].中国电机工程学报,2016,36(9):2478-2485.
[10]陆治国,祝万平,刘捷丰,等.一种新型交错并联双向DC-DC变换器[J].中国电机工程学报,2013,33(12):39-46.
[11]KARSHENAS H,DANESHPAJOOH H,SAFAEE A,et al.Basic families of medium-power soft-switched isolated bidirectional DC-DC converters[C]//Proc.IEEE Power Electron.Drive Syst.Technol.Conf.,2011:92-97.
[12]JAIN A,AYYANAR R.PWM control of dual active bridge:Comprehensive analysis and experimental verification[J].IEEE Trans.Power Electron.2011(26):1215-1227.
[13]姜磊.Buck/Boost变换器在车载超级电容能量管理系统中的应用[D].大连:大连理工大学,2017:20-25.
[14]李双刚,张方华,刘硕.高效率双向Buck/Boost变换器的研究[J].电力电子技术,2013,47(4):73-74.
[15]蒋香华,肖岚,高雨翔,等.基于软开关Buck/Boost变换器的双向控制研究[J].电力电子技术,2016,50(4):31-35.
[16]梁峰.DC/DC变换器并联均流与交错控制研究[D].北京:清华大学,2004:30-35.
[17]WU T F,CHEN Y C,YANG C G.Isolated bidirectional full-bridge DC-DC converter with a flyback snubber[J].IEEE Trans.Power Electron.,2010,25(7):1915-1922.
[18]WANG K,LEE F C,LAI J.Operation principles of bidirectional full-bridge DC-DC converter with unified soft-switching scheme and soft-starting capability[C]//Proc.Appl.Power Electron.Conf.and Expo.,2000:111-118.
[19]张振亚.基于电流源半桥的双向DC/DC变换器及其串并联控制技术[D].南京:南京航空航天大学,2017.
[2]吴帆.移相全桥ZVS软开关DC-DC稳压电源的设计与分析[J].通信电源技术,2015,32(4):92-95.
[3]陆治国,祝万平,刘捷丰,等.一种新型交错并联双向DC-DC变换器[J].中国电机工程学报,2013,33(12):39-46.
[4]田春光,田利,李德鑫,等.基于混合储能系统跟踪光伏发电输出功率的控制策略[J].电工技术学报,2016,31(14):75-83.
[5]王淑娟,景芳毅.从度电成本分析光伏平价的路径[J].太阳能,2016,37(8):9-16.
[6]陈章勇,许建平,吴建雪,等.耦合电感零输入纹波高增益非隔离DC-DC变换器[J].中国电机工程学报,2014,34(33):5836-5845.
[7]葛智元,周立新,赵巍,等.超级电容器与蓄电池并联混合电源放电特性[J].电源技术,2014,38(5):886-889.
[8]胡斌,杨中平,黄先进,等.用于超级电容储能系统的三电平双向直流变换器及其控制[J].电工技术学报,2015,30(8):84-89.
[9]侯聂,宋文胜,武明义.双向全桥DC-DC变换器的负载电流前馈控制方法[J].中国电机工程学报,2016,36(9):2478-2485.
[10]陆治国,祝万平,刘捷丰,等.一种新型交错并联双向DC-DC变换器[J].中国电机工程学报,2013,33(12):39-46.
[11]KARSHENAS H,DANESHPAJOOH H,SAFAEE A,et al.Basic families of medium-power soft-switched isolated bidirectional DC-DC converters[C]//Proc.IEEE Power Electron.Drive Syst.Technol.Conf.,2011:92-97.
[12]JAIN A,AYYANAR R.PWM control of dual active bridge:Comprehensive analysis and experimental verification[J].IEEE Trans.Power Electron.2011(26):1215-1227.
[13]姜磊.Buck/Boost变换器在车载超级电容能量管理系统中的应用[D].大连:大连理工大学,2017:20-25.
[14]李双刚,张方华,刘硕.高效率双向Buck/Boost变换器的研究[J].电力电子技术,2013,47(4):73-74.
[15]蒋香华,肖岚,高雨翔,等.基于软开关Buck/Boost变换器的双向控制研究[J].电力电子技术,2016,50(4):31-35.
[16]梁峰.DC/DC变换器并联均流与交错控制研究[D].北京:清华大学,2004:30-35.
[17]WU T F,CHEN Y C,YANG C G.Isolated bidirectional full-bridge DC-DC converter with a flyback snubber[J].IEEE Trans.Power Electron.,2010,25(7):1915-1922.
[18]WANG K,LEE F C,LAI J.Operation principles of bidirectional full-bridge DC-DC converter with unified soft-switching scheme and soft-starting capability[C]//Proc.Appl.Power Electron.Conf.and Expo.,2000:111-118.
[19]张振亚.基于电流源半桥的双向DC/DC变换器及其串并联控制技术[D].南京:南京航空航天大学,2017.