The invention discloses a hybrid power locomotive and an energy balance control method and system thereof. The locomotive hybrid power system comprises a hydrogen fuel cell, a bidirectional DCDC converter, a power battery and a charger. The output end of the hydrogen fuel cell is electrically connected with the first end of the bidirectional DCDC converter, the second end of the bidirectional DCDC converter is electrically connected with the load and the output end of the power cell, the input end of the power cell is electrically connected with the charger, and the charger is further electrically connected with the load; the front-end voltage of the bidirectional DCDC converter and the front-end voltage of the load are subjected to segmented control, control targets are effectively distributed, the stability of the front-end voltage of the bidirectional DCDC converter and the stability of the front-end voltage of the load are guaranteed, mutual influence between the front-end voltage of the bidirectional DCDC converter and the front-end voltage of the load is avoided, energy control and balance of the locomotive hybrid power system are achieved, and the control logic is simplified.
本发明公开了一种混合动力机车及其能量平衡控制方法与系统,机车混动系统包括氢燃料电池、双向DCDC变换器、动力电池以及充电机;氢燃料电池的输出端与双向DCDC变换器的第一端电连接,双向DCDC变换器的第二端分别与负载、动力电池的输出端电连接,动力电池的输入端与充电机电连接,充电机还与负载电连接;对双向DCDC变换器前端电压以及负载前端电压进行分段控制,有效分配各控制目标,保证了双向DCDC变换器前端电压和负载前端电压的稳定,避免了双向DCDC变换器前端电压与负载前端电压之间相互影响,实现了机车混动系统的能量控制与平衡,简化了控制逻辑。
Hybrid power locomotive and energy balance control method and system thereof
一种混合动力机车及其能量平衡控制方法与系统
2021-11-02
Patent
Electronic Resource
Chinese
IPC: | B61C Lokomotiven , LOCOMOTIVES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / 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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