A novel bidirectional DC-DC converter
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摘要: 针对传统Buck-Boost变换器存在的输出电压有限、稳定性较差、增益较低等问题，设计了一种采用Z源网络连接直流输入电源和负载的新型双向DC-DC变换器，分析了该新型变换器在功率正向传输和功率反向传输时的工作过程。实验结果表明，该新型变换器能够实现功率双向传输，且在2种功率传输模式下都能实现升压、降压功能；与传统Buck-Boost变换器相比，该新型变换器输出电压更稳定，电压增益较高。
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关键词:
- 蓄电池机车 /
- 双向DC-DC变换器 /
- 功率双向传输 /
- Z源网络
Abstract: For shortages of traditional Buck-Boost converters such as limited output voltage, poor stability, low voltage gain and so on, a novel bidirectional DC-DC converter was designed which used Z-source network to connect DC input power and load. Working process of the novel converter was analyzed during power forward transmission and power reversed transmission. The experimental results show that the novel converter not only realizes bidirectional power transmission, but also realizes voltage lifting and falling under power forward transmission mode or the reversed one. In addition, the novel converter has more stable output voltage and higher voltage gain than traditional Buck-Boost converter. -
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