The invention discloses a V2G charging pile bidirectional AC/DC converter control method and system, and relates to the technical field of V2G charging pile control, and the method comprises the steps: collecting the network side voltage and current data of a bidirectional AC/DC converter of a V2G charging pile; electromagnetic power is obtained through optimization of a fuzzy PI controller, a fundamental current reference value is obtained through a virtual synchronous machine algorithm, and a compensation current reference value is calculated through a harmonic extraction algorithm; and establishing a model prediction controller based on a genetic algorithm, selecting an optimal switching tube on-off state, and controlling a three-phase bridge circuit switching tube to realize electric energy quality management. According to the invention, a virtual synchronization algorithm is combined with bidirectional power flow, the inertia damping of the AC/DC converter is improved, smooth switching of different working states is realized, and system impact is reduced; a controller is optimized by using a genetic algorithm, precise tracking of harmonic current is realized, the dynamic performance of the system is enhanced, the interaction stability of a vehicle network is improved, and the power grid treatment cost is reduced.
本发明公开了一种V2G充电桩双向AC/DC变流器控制方法及系统,涉及V2G充电桩控制技术领域,包括采集V2G充电桩的双向AC/DC变流器网侧电压、电流数据;通过模糊PI控制器优化得到电磁功率,通过虚拟同步机算法得到基波电流参考值,通过谐波提取算法计算补偿电流参考值;建立基于遗传算法的模型预测控制器,选择最优开关管开断状态,控制三相桥式电路开关管,实现电能质量治理。本发明将虚拟同步算法与双向功率流动结合,提升AC/DC变流器惯性阻尼,实现不同工作状态的平滑切换,减小系统冲击;利用遗传算法优化控制器,实现谐波电流的精确跟踪,增强系统动态性能,提升车网互动稳定性,减少电网治理成本。
V2G charging pile bidirectional AC/DC converter control method and system
一种V2G充电桩双向AC/DC变流器控制方法及系统
2024-10-11
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 / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen / 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 / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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