直流微电网中光伏发电单元运行模式无缝切换方法

• Format: Patent
• Language: Chinese
• Published: 05.10.2016
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

直流微电网中光伏发电单元运行模式无缝切换方法，属于微电网控制技术领域。本发明是为了避免直流微电网系统中光伏发电单元在最大功率跟踪和下垂控制运行模式间切换时带来的不期望的电压、电流冲击。本发明提出种基于下垂曲线平移的直流微电网光伏发电单元运行模式无缝切换方法，当光伏发电单元需要工作在最大功率跟踪模式时，通过平移下垂曲线实现光伏发电单元输出功率的改变，最终达到光伏阵列的最大功率点，当光伏发电单元需要工作在下垂模式时，则取消平移量，从而实现不同运行模式间变换器输出电压、电流无冲击的无缝切换。本发明适用于在最大功率跟踪模式和下垂控制模式切换的场合。