The invention provides an improvement scheme of charging station efficiency and dynamic performance based on an energy router, and belongs to the field of medium-high voltage electric vehicle chargingstations. A quasi-forward intermittent mode, a quasi-reverse intermittent mode, a quasi-forward mode and a quasi-reverse mode are formed by controlling the switching-on moments and the switching action duration of all IGBTs (S1, S2, S3, S4, S5, S6, S7 and S8) of the series resonance type isolated DC-DC topology, so that the energy bidirectional flow capacity is ensured in all modes, and the system loss is not increased. The working mode state of the DC-DC is determined by detecting the power of the whole charging station and comparing the power with the mode switching condition and the working states are switched according to the working modes, so that the system can keep higher efficiency operation in a full-load range and has good dynamic characteristics.
本发明提出一种基于能量路由器的充电站效率和动态性能的改善方案,属于中高压电动汽车充电站领域。本发明通过控制串联谐振式隔离型DC‑DC拓扑所有IGBT(S1、S2、S3、S4、S5、S6、S7、S8)的开通时刻以及开关动作持续时间形成准正向间歇模式、准反向间歇模式、准正向模式和准反向模式。保证了在所有模式下都具备了能量双向流动的能力,且不增加系统损耗。通过检测充电站整机功率大小与模式切换条件对比来确定DC‑DC的工作模式状态并进行工作模式切换工作状态,使系统在全负载范围内能够保持较高的效率运行且具备良好动态特性。
Improvement scheme of charging station efficiency and dynamic performance based on energy router
一种基于能量路由器的充电站效率和动态性能的改善方案
2020-09-01
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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