摘要：It is important to achieve stability of bus voltage in control of DC microgrids. In the DCmicrogrid, the traditional droop control method is usually adopted to stabilize the bus voltage for its highreliability and cost-effectiveness. However, line resistance will reduce the voltage quality of the DC bus inactual situations. In order to improve the voltage quality of the DC bus, a novel bus voltage control strategybased on modified droop characteristic is proposed. Finally, the simulation model of the off-grid DCmicrogrid with improved droop control strategy is buit on PSCAD/EMTDC platform, and the results verifythe ffectiveness and feasibility of the proposed control strategy.
其他摘要：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.
