交错并联磁集成开关电感/开关电容Cuk变换器
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摘要
为了提高传统的Cuk变换器的电压增益、电压传输效率、输出电流纹波,同时减小电感支路的电流纹波和变换器的体积重量,将磁集成技术和交错并联技术应用到传统的Cuk变换中,提出了交错并联磁集成开关电感/开关电容Cuk变换器的拓扑。通过采用开关电感/开关电容结构替换传统变换器中的电感与电容的方式,采用磁集成技术并合理设计耦合电感间的耦合系数,能够减小该变换器电感支路的电流纹波、提高系统暂态响应速度、减小变换器的体积重量,进而提高变换器的电气性能。最后通过实验样机的结果验证了理论分析的正确性。
To improve the voltage gain of the conventional Cuk converter, the transmission efficiency of voltage,and the output current ripple while reducing the current ripple on the inductance branch and the volume and weight of the converter, magnetic integration and interleaved parallel technologies are applied to the traditional Cuk transform, and the topology of an interleaved parallel magnetic integrated Cuk converter with switched inductor/switched capacitor is proposed. By using the switched inductor/switched capacitor structure to replace the inductor and capacitor in the conventional converter, magnetic integration technology is adopted and the reasonable coupling coefficient between coupled inductors is designed. In this way, the current ripple on the inductance branch of the converter is reduced, the transient response speed of the system is improved, and the volume and weight of the converter are reduced, thus improving the electrical performance of the converter. Finally, the theoretical analysis in this paper was verified by results from an experimental prototype.
To improve the voltage gain of the conventional Cuk converter, the transmission efficiency of voltage,and the output current ripple while reducing the current ripple on the inductance branch and the volume and weight of the converter, magnetic integration and interleaved parallel technologies are applied to the traditional Cuk transform, and the topology of an interleaved parallel magnetic integrated Cuk converter with switched inductor/switched capacitor is proposed. By using the switched inductor/switched capacitor structure to replace the inductor and capacitor in the conventional converter, magnetic integration technology is adopted and the reasonable coupling coefficient between coupled inductors is designed. In this way, the current ripple on the inductance branch of the converter is reduced, the transient response speed of the system is improved, and the volume and weight of the converter are reduced, thus improving the electrical performance of the converter. Finally, the theoretical analysis in this paper was verified by results from an experimental prototype.
引文
[1]胡经纬,王久和,唐骐.一种新型高增益Cuk变换器研究[J].电工技术学报,2014,29(S1):337-344.Hu Jingwei,Wang Jiuhe,Tang Qi.Research on a new type of high gain Cuk converter[J].Transactions of China Electrotechnical Society,2014,29(S1):337-344(in Chinese).
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[6]程璐璐,阮新波,章涛.输入串联输出并联的直流变换器控制策略研究[J].中国电机工程学报,2006,26(22):67-93.Cheng Lulu,Ruan Xinbo,Zhang Tao.Control strategy for input-series output-paralleled DC-DC converters[J].Proceedings of the CSEE,2006,26(22):67-93(in Chinese).
[7]Axelrod B,Berkovich Y,Ioinovici A.Switched-capacitor/switched-inductor structures for getting transformerless hybrid DC-DC PWM converters[J].IEEE Transactions on Circuits&Systems I Regular Papers,2008,55(2):687-696.
[8]王挺,汤雨,何耀华,等.多单元开关电感/开关电容有源网络变换器[J].中国电机工程学报,2014,34(6):832-838.Wang Ting,Tang Yu,He Yaohua,et al.Multicell switchedinductor/switched-capacitor active-network converter[J].Proceedings of the CSEE,2014,34(6):832-838(in Chinese).
[2]吴智星,徐玉珍,林维明.直流降压型Cuk开关变换器的设计分析[J].电源学报,2012,10(4):63-67,71.Wu Zhixing,Xu Yuzhen,Lin Wei Ming.Design and analysis of DC step-down Cuk switching converter[J].Journal of Power Supply,2012,10(4):63-67,71(in Chinese).
[3]Jiao Y,Luo F L,Bose B K.Voltage-lift split-inductor-type boost converters[J].IET Power Electronics,2011,4(4):353-362.
[4]杨平,许建平,张士宇,等.峰值电流控制二次型Boost变换器[J].电工技术学报,2011,26(5):101-107.Yang Ping,Xu Jianping,Zhang Shiyu,et al.Peak current control mode for quadratic boost converter[J].Transactions of China Electrotechnical Society,2011,26(5):101-107(in Chinese).
[5]廖志凌,阮新波.一种独立光伏发电系统双向变换器的控制策略[J].电工技术学报,2008,23(1):97-103.Liao Zhiling,Ruan Xinbo.Control strategy for Bi-directional DC/DC converter of a novel stand-alone photovoltaic power system[J].Transactions of China Electrotechnical Society,2008,23(1):97-103(in Chinese).
[6]程璐璐,阮新波,章涛.输入串联输出并联的直流变换器控制策略研究[J].中国电机工程学报,2006,26(22):67-93.Cheng Lulu,Ruan Xinbo,Zhang Tao.Control strategy for input-series output-paralleled DC-DC converters[J].Proceedings of the CSEE,2006,26(22):67-93(in Chinese).
[7]Axelrod B,Berkovich Y,Ioinovici A.Switched-capacitor/switched-inductor structures for getting transformerless hybrid DC-DC PWM converters[J].IEEE Transactions on Circuits&Systems I Regular Papers,2008,55(2):687-696.
[8]王挺,汤雨,何耀华,等.多单元开关电感/开关电容有源网络变换器[J].中国电机工程学报,2014,34(6):832-838.Wang Ting,Tang Yu,He Yaohua,et al.Multicell switchedinductor/switched-capacitor active-network converter[J].Proceedings of the CSEE,2014,34(6):832-838(in Chinese).