Abstract
It is important to achieve stability of bus voltage in control of DC microgrids. In the DC microgrid, the traditional droop control method is usually adopted to stabilize the bus voltage for its high reliability and cost-effectiveness. However, line resistance will reduce the voltage quality of the DC bus in actual situations. In order to improve the voltage quality of the DC bus, a novel bus voltage control strategy based on modified droop characteristic is proposed. Finally, the simulation model of the off-grid DC microgrid with improved droop control strategy is built on PSCAD/EMTDC platform, and the results verify the effectiveness and feasibility of the proposed control strategy.
Highlights
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
WR IRUPXOD:KHUH UGF GHQRWHV WKH DFWXDO YDOXH RI WKH '& EXV YROWDJH UG WKH FRQWURO UHIHUHQFH YDOXH RI WKH YROWDJH ORRS RI WKH '* FRQYHUWHU LV REWDLQHG IURP WKH IRUPXOD.
ZKLFK FDQ EH WUDQVIRUPHG LQWR WKH FRQWURO VLJQDO RI WKH FRQYHUWHU ZLWK WKH YROWDJHFXUUHQW GRXEOHORRS 3, FRQWURO WR UHDOL]H WKH DFFXUDWH WUDFNLQJ RI WKH '& YROWDJH
Summary
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
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
