双向有源桥式DC/DC变换器的相移控制对比研究
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摘要
针对双向有源桥式(DAB)DC/DC变换器在单相移控制中电流应力大、效率低的缺点,对比研究了在单相移控制和双重相移控制下DAB DC/DC变换器的电流应力和效率。首先对两者进行原理分析,然后进行功率调节和电流应力的理论推导,使用Matlab工具直观显示单相移控制和双重相移控制下的功率与相移量的关系,以及电流应力与相移量之间的关系,对比发现,双重相移控制下的功率调节范围、电流应力明显优于单相移控制。最后在基于TMS320F28335控制器的DAB DC/DC变换器实验平台进行了对比实验,实验结果验证了理论推导的正确性。
Aiming at the characteristics of high current stress and low efficiency in single-phase-shift control of dual active bridge(DAB) DC/DC converter, the current stress and efficiency of DAB DC/DC converter under single-phaseshift control and double-phase-shift control are compared and studied. First of all, the principle of both are analyzed,and then the theory of power regulation and current stress is deduced.The relationship between power and phase-shift un-der single-phase-shift control and double-phase-shift control is visually displayed by using Matlab tools,and the relationship between current stress and phase shift is found.The power regulation range and current stress of dualphase-shift control are much better than that of single-phase-shift control.Finally,the experimental platform of DAB DC/DC converter based on TMS320F28335 controller is compared, and the correctness of the theoretical derivation is verified by the experimental results.
Aiming at the characteristics of high current stress and low efficiency in single-phase-shift control of dual active bridge(DAB) DC/DC converter, the current stress and efficiency of DAB DC/DC converter under single-phaseshift control and double-phase-shift control are compared and studied. First of all, the principle of both are analyzed,and then the theory of power regulation and current stress is deduced.The relationship between power and phase-shift un-der single-phase-shift control and double-phase-shift control is visually displayed by using Matlab tools,and the relationship between current stress and phase shift is found.The power regulation range and current stress of dualphase-shift control are much better than that of single-phase-shift control.Finally,the experimental platform of DAB DC/DC converter based on TMS320F28335 controller is compared, and the correctness of the theoretical derivation is verified by the experimental results.
引文
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[5]侯聂,宋文胜.全桥隔离DC/DC变换器的三重相移控制及其软启动方法[J].中国电机工程学报,2015,23(35):6113-6121.
[6] Hou N,Song W,Wu M.Minimum-current-stress Scheme of Dual Active Bridge DC/DC Converter With Unifiedphase-shift Control[J].IEEE Trans. on Power Electronics,2016,31(12):8552-8561.
[7]侯聂,宋文胜,王顺亮.全桥隔离DC/DC变换器相移控制归一化及其最小回流功率控制[J].中国电机工程学报,2016,36(2):499-506.
[2] Zhang F,Zhao H,Hong M.Operation of Networked Microgrids in a Distribution System[J].CSEE Journal of Power and Energy Systems,2015,1(4):12-21.
[3] Zhao B,Song Q,Liu W,et al.Overview of Dual-active-bridge Isolated Bidirectional DC/DC Converter for High-frequency-link Power-conversion System[J].IEEE Trans. on Power Electronics,2014,29(8):4091-4106.
[4] Zhao B,Yu Q,Sun W.Extended-phase-shift Control of Isolated Bidirectional DC/DC Converter for Power Distribution in Microgrid[J].IEEE Trans. on Power Electronics,2012,27(11):4667-4680.
[5]侯聂,宋文胜.全桥隔离DC/DC变换器的三重相移控制及其软启动方法[J].中国电机工程学报,2015,23(35):6113-6121.
[6] Hou N,Song W,Wu M.Minimum-current-stress Scheme of Dual Active Bridge DC/DC Converter With Unifiedphase-shift Control[J].IEEE Trans. on Power Electronics,2016,31(12):8552-8561.
[7]侯聂,宋文胜,王顺亮.全桥隔离DC/DC变换器相移控制归一化及其最小回流功率控制[J].中国电机工程学报,2016,36(2):499-506.