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首页> 外文期刊>Power Electronics, IET >Distributed power flow control using cascaded multilevel isolated bidirectional DC–DC converter with multi-phase shift modulation
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Distributed power flow control using cascaded multilevel isolated bidirectional DC–DC converter with multi-phase shift modulation

机译：使用带多相移调制的级联多级隔离双向DC-DC转换器进行分布式潮流控制

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摘要

This study proposes a cascaded multilevel isolated bidirectional DC-DC converter (CMIBDC) suitable for large capacity energy storage applications. Compared to conventional IBDC, the proposed converter has higher power-handling capacity distributed among multiple cascaded HV and LV bridges. The HV bridges are cascaded through a high-frequency transformer with a common DC bus. On the other hand, the LV bridges are directly cascaded with isolated DC storage batteries. Effectively, the CMIBDC requires only a single DC input to store the energy in multiple battery units. A multi-phase shift (MPS) modulation scheme has been introduced which provide wide range of power flow control. The MPS modulation shapes the high-frequency link AC current with low THD thus reducing high-frequency losses. Detailed operating waveforms of the proposed CMIBDC converter in different modes are presented. The performance of the proposed converter and modulation scheme has been demonstrated through PSCAD/EMTDC simulation and validated experimentally using Spartan 3AN FPGA processor-controlled CMIBDC.
机译：这项研究提出了一种适用于大容量储能应用的级联多级隔离双向DC-DC转换器（CMIBDC）。与传统的IBDC相比，该转换器具有更高的功率处理能力，分布在多个级联的HV和LV桥之间。高压桥通过带有公共直流母线的高频变压器级联。另一方面，LV桥直接与隔离的DC蓄电池级联。实际上，CMIBDC仅需要单个DC输入即可将能量存储在多个电池单元中。引入了一种多相移（MPS）调制方案，该方案可提供广泛的功率流控制。 MPS调制对具有低THD的高频链路AC电流进行整形，从而减少了高频损耗。给出了所建议的CMIBDC转换器在不同模式下的详细工作波形。拟议的转换器和调制方案的性能已通过PSCAD / EMTDC仿真进行了演示，并使用Spartan 3AN FPGA处理器控制的CMIBDC进行了实验验证。

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