According to the distributed photovoltaic grid-connected power distribution network electric energy router and the control method thereof, the router is composed of a photovoltaic module, a grid-connected bidirectional converter module, an energy storage module, a charging pile module, an alternating current load and a control system, the topological structure and the control method can achieve multi-directional flow of electric energy in a distributed photovoltaic household energy internet, and all the modules are efficiently interconnected. According to the grid-connected bidirectional converter module and the control method thereof, flexible virtual flux linkage observation is realized by adopting a method of parallel interleaving control of three low-pass filters, and quicker and more accurate electrical parameter observation is realized; a band-pass quasi-PR controller and a dead-beat current control algorithm are adopted to realize dead-beat tracking control of grid-connected reference current, and grid-connected quality and system stability are guaranteed; and the bus voltage outer ring PI regulator is cascaded with the band-stop quasi-PR controller, so that the influence of DC bus voltage pulsation on the inner ring grid-connected current is suppressed, the volume and the cost of the grid-connected bidirectional converter are reduced, and the miniaturization and the light weight of the electric energy router are realized.
一种分布式光伏并网配电网电能路由器及其控制方法,由光伏模块、并网双向变流器模块、储能模块、充电桩模块、交流负载以及控制系统构成,拓扑结构和控制方法可实现分布式光伏户用能源互联网中电能的多向流动,使各个模块高效互联。所述的并网双向变流器模块及其控制方法,采用三个低通滤波器并联交错控制的方法实现柔性虚拟磁链观测,实现更快速和准确的电气参数观测;采用带通式准PR控制器和无差拍电流控制算法实现并网参考电流的无差跟踪控制,保障并网质量和系统稳定性;母线电压外环PI调节器级联带阻式准PR控制器,抑制直流母线电压脉动对内环并网电流的影响的同时,降低并网双向变流器的容积和成本,实现电能路由器小型化和轻量化。
Distributed photovoltaic grid-connected power distribution network electric energy router and control method thereof
一种分布式光伏并网配电网电能路由器及其控制方法
2023-07-07
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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