The invention relates to the field of energy absorption and feedback, in particular to an urban rail transit energy storage type regenerative braking energy recovery structure and a control method, and the structure comprises an input switch safety unit, a main energy storage electric unit, a bidirectional DC/DC converter 1, an auxiliary energy storage unit, a bidirectional DC/DC converter 2, a control unit, filter capacitors C1 and C2, and an inductor L1. The A+ end and the A- end of the bidirectional DC/DC converter 1 are connected with the main energy storage electric unit in series, the B+ end and the B- end of the bidirectional DC/DC converter 1 are connected with the auxiliary energy storage electric unit in parallel, and the bidirectional DC/DC converter 1 is composed of VT1-VT4 and L2. A collector of the VT1 is connected with the A+ end, an emitter of the VT1 is connected with a collector of the VT2 and then connected with the L2, an emitter of the VT2 is connected with a reference ground (A- end), a collector of the VT3 is connected with the B+ end, the conversion power of the bidirectional DC/DC converter is greatly reduced compared with a general full-power structure mode, and the conversion power is 20-30% of classic structure conversion power. The product manufacturing cost is reduced, and the overall efficiency of the system is improved.
本发明涉及能量吸收与回馈领域,尤其涉及城市轨道交通储能型再生制动能量回收结构及控制方法,包括输入开关保险单元,主储能电单元,双向DC/DC变换器1,辅助储能单元,双向DC/DC变换器2,控制单元,滤波电容C1、C2、电感L1,双向DC/DC变换器1的A+和A‑端与的主储能电单元串联,双向DC/DC变换器1的B+和B‑端与的辅助储能电单元并联,双向DC/DC变换器1由VT1‑VT4和L2组成。VT1集电极接A+端,VT1发射极和VT2集电极相连后,接L2,VT2发射极接参考地(A‑端),VT3集电极接B+端,双向DC/DC变换器的变换功率较通用的全功率结构方式有极大降低,变换功率是经典结构变换功率的20‑30%。实现产品制造成本降低,提高系统总体效率。
Urban rail transit energy storage type regenerative braking energy recovery structure and control method
城市轨道交通储能型再生制动能量回收结构及控制方法
2021-04-13
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 / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / 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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