The invention discloses a non-switching bidirectional direct current converter and a control process thereof, the converter comprises four transistors, four fly-wheel diodes, a power inductor L, two filter capacitors, a power battery B, a super capacitor C, a switch S and a direct current bus DC +/DC-, the four freewheel diodes are respectively and reversely connected in parallel with two ends of the four transistors, the power inductor L is bridged with a midpoint of a bridge arm formed by the transistors Q1Q2 and a midpoint of a bridge arm formed by the transistors Q3Q4, the power battery B and the filter capacitor C1 are connected in parallel with two ends of the transistors Q1Q2, and the super capacitor C, the filter capacitor C2 and the DC bus DC +/DC-are connected in parallel between the transistors Q3Q4. And a switch S is connected in series between the positive electrode of the super capacitor C and the direct-current bus DC +. According to the non-switching bidirectional direct-current converter provided by the invention, the reliability of the circuit is improved, the cost of the circuit is reduced, the installation and debugging difficulty of the circuit is reduced, and meanwhile, the energy feedback of the super capacitor is also realized.
本发明公开了一种无切换双向直流变换器及其控制过程,所述变换器包括:四个晶体管、四个续流二极管、功率电感L、两个滤波电容、动力电池B、超级电容C,开关S,直流母线DC+/DC‑,其中:四个晶体管Q1至Q4构成类H桥结构,四个续流二极管分别反向并联在四个晶体管两端,功率电感L跨接晶体管Q1Q2所组成桥臂中点与晶体管Q3Q4所组成桥臂中点,动力电池B和滤波电容C1并联在晶体管Q1Q2的两端,超级电容C、滤波电容C2和直流母线DC+/DC‑并联在晶体管Q3Q4之间,超级电容C正极和直流母线DC+之间串联有开关S。本发明提供的无切换双向直流变换器,不仅提高了电路的可靠性,降低了电路的成本,减少了电路的安装和调试难度,同时也实现了超级电容的能量回馈。
Switching-free bidirectional direct-current converter and control process thereof
一种无切换双向直流变换器及其控制过程
27.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | 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 / 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 |
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