摘要
针对双向全桥隔离DC/DC变换器,以减少变换器硬件与控制系统的设计成本为目标,该文重点开展相移控制方法研究。首先,为减小变换器峰值电流与磁性元件设计成本,分析了一种通用的三重相移控制方法,在此基础上,给出了相应的最小峰值电流控制算法。然后,针对现有最小峰值电流控制运算量和复杂性大的缺点,提出了一种虚拟功率控制方法,该算法可以取消负载电流传感器,且对电感参数无依赖性;最后,基于RT-LAB与TMS320F28335的硬件在环实验平台对所提出的算法进行了半实物实验验证。实验结果表明,在宽范围输入电压的情况下,基于该虚拟功率控制的最小峰值电流控制算法能有效地减小变换器的电流应力。
This paper focuses on the phase-shift control strategy of dual-active-bridge（DAB） DC/DC converters, in order to reduce the cost of hardware and control system. Firstly, to reduce current stress and design cost of magnetic component, a generalized triple-phase-shift control method was discussed. On the basis of this, a current stress minimization control scheme was shown. And then, due to the high computational complexity of the existing current stress minimization schemes, a virtual power control method was proposed, which can remove the load current sensor and to achieve inductance parameter insensitivity. Finally, the proposed control method was verified in a hardware-in-loop（HIL） experimental platform with RT-LAB simulator and TMS320F28335 controller. The HIL experimental results show that the proposed current stress minimization scheme based on virtual power control method can reduce current stress of converters in wide input voltage range, effectively.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2016年第18期4990-4998,5124,共9页
Proceedings of the CSEE
关键词
隔离DC-DC变换器
三重相移控制
虚拟功率控制
最小电流应力
isolated DC-DC converter
triple-phase-shift control
virtual power control method
current stress minimization
