›› 2010, Vol. 49 ›› Issue (增刊01): 60-64.

• 论文 • 上一篇    下一篇

基于虚拟磁链的微电网分布式逆变电源的功率平衡控制

舒 杰1,2,张先勇2,沈玉梁1   

  1. (1.中山大学电力电子研究所,广东 广州5102751;2. 中国科学院 广州能源研究所,广东 广州510640)
  • 收稿日期:2010-01-11 修回日期:1900-01-01

Power Balance Control of Inverter Power Sources in Microgrid Based on Virtual Fluxes

SHU Jie1,2, ZHANG Xianyong2, SHEN Yuliang1   

  1. (1. Institute of Power Electronics and Control Technology, Sun Yatsen University,Guangzhou 510275, China;〖JP2〗2. Guangzhou Institute of Energy Conversion, Chinese Academy of Science,Guangzhou 510640, China)
  • Received:2010-01-11 Revised:1900-01-01

摘要: 对分布式逆变电源组成的微电网在独立运行模式下的功率平衡控制进行了研究。在分析功率下垂特性的基础上,通过引入虚拟阻抗,将传统高压电力系统中的功率下垂特性曲线应用到中低压的微电网,实现微网功率平衡控制,并给出了电压源逆变器的参考控制电压。引入虚拟磁链,将电压的控制转化为空间磁链的控制,通过滞环控制器实现空间磁链的快速跟踪。系统的仿真结果表明系统负载变动时,微电网各逆变电源能合理分配负荷,所述的控制策略有效。

关键词: 虚拟磁链, 微电网, 逆变电源, 功率平衡控制

Abstract: The power balance control of the microgrid with distributed energy resources in standalone mode is developed. By introducing the virtual impedance, the PQ droop used in the traditional high voltage electrical system is successfully applied to the medium and low voltage microgrid. It not only realizes the power balance control of the microgrid, but also provides the reference voltage for the inverter. By introducing the virtual flux, the control of the inverter voltage is transferred to the flux control, and the fast tracking of the reference flux is achieved with the hysteresis control. Simulation results show that the load power consumption is rationally assigned to the individual inverter power sources when the load is changed. The whole strategy is valid.

Key words: virtual fluxes, microgrid, power inverter, power balance control

中图分类号: