Study on DC Bus Voltage Deviation Control Autonomy in Hybrid AC/DC Micro-Grid

doi:10.11930/j.issn.1004-9649.2017.01.062.05

Abstract

Abstract: DC bus voltage stability control is very important for hybrid AC/DC micro-grid. A practical and efficient control method is proposed for DC bus voltage deviation stability control autonomy of hybrid AC/DC micro-grid. In grid-connected mode, the droop control method of DC bus voltage under idle mode is used to control the DC bus voltage stability through AC-DC inverter, which can avoid frequent charge-discharge. In islanding mode, the DC bus voltage is controlled by DC-DC converter. For reliability of system in islanding mode, the DC bus can connect multipath DC-DC stored batteries. The distributed energy utilization ratio is improved through autonomous stability control, and the service life of electronic devices are increased under idle mode. Experimental tests prove that the proposed method has good control efficiency and can provide a good technical support for the rapid development of hybrid AC/DC micro-grid.

Key words: hybrid AC/DC micro-grid, DC bus voltage, deviation control autonomy

CLC Number:

TM727

WU Bingxin, XIE Weihua, YE Hongen. Study on DC Bus Voltage Deviation Control Autonomy in Hybrid AC/DC Micro-Grid[J]. Electric Power, 2017, 50(1): 62-66.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2017.01.062.05

https://www.electricpower.com.cn/EN/Y2017/V50/I1/62

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