为实现配电网的柔性互联,提出一种基于多绕组变压器的直接式AC-AC型智能软开关(direct AC-AC soft open point,AC-SOP)拓扑结构,可在四象限内独立控制输出电压的幅值及相位,且无直流环节,拓扑灵活性较高。建立AC-SOP互联馈线环网的数学...为实现配电网的柔性互联,提出一种基于多绕组变压器的直接式AC-AC型智能软开关(direct AC-AC soft open point,AC-SOP)拓扑结构,可在四象限内独立控制输出电压的幅值及相位,且无直流环节,拓扑灵活性较高。建立AC-SOP互联馈线环网的数学模型,并结合所提出的AC-SOP的等效占空比算法,给出AC-SOP在潮流控制模式和恢复供电模式下的闭环解耦控制策略。最后,通过仿真验证所提AC-SOP在控制互联馈线环网潮流和恢复供电方面的有效性;通过搭建单相1kW子模块,验证了所提拓扑结构可实现电压幅值与相位的独立控制。展开更多
In industry development strategy of electric vehicles, apart from concerns on the development of electric vehicles, we also need to consider the issue of charging facilities construction. Firstly, through analysis, th...In industry development strategy of electric vehicles, apart from concerns on the development of electric vehicles, we also need to consider the issue of charging facilities construction. Firstly, through analysis, this paper discusses the importance of AC charging points for electric vehicle development. By studying existing AC charging points on the market, it presents a low-cost smart AC charging system to reduce the cost investigated by power companies and operational bodies when laying of a large number of AC charging points. Compared with the conventional one, the proposed system has prominent features of low cost, small footprint and low investment.展开更多
文摘为实现配电网的柔性互联,提出一种基于多绕组变压器的直接式AC-AC型智能软开关(direct AC-AC soft open point,AC-SOP)拓扑结构,可在四象限内独立控制输出电压的幅值及相位,且无直流环节,拓扑灵活性较高。建立AC-SOP互联馈线环网的数学模型,并结合所提出的AC-SOP的等效占空比算法,给出AC-SOP在潮流控制模式和恢复供电模式下的闭环解耦控制策略。最后,通过仿真验证所提AC-SOP在控制互联馈线环网潮流和恢复供电方面的有效性;通过搭建单相1kW子模块,验证了所提拓扑结构可实现电压幅值与相位的独立控制。
文摘In industry development strategy of electric vehicles, apart from concerns on the development of electric vehicles, we also need to consider the issue of charging facilities construction. Firstly, through analysis, this paper discusses the importance of AC charging points for electric vehicle development. By studying existing AC charging points on the market, it presents a low-cost smart AC charging system to reduce the cost investigated by power companies and operational bodies when laying of a large number of AC charging points. Compared with the conventional one, the proposed system has prominent features of low cost, small footprint and low investment.