Team-Oriented Load Sharing in Parallel DC–DC Converters
Team-Oriented Load Sharing in Parallel DC–DC Converters
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DOI：
10.1109/tia.2014.2336982
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发表时间：
2015
影响因子：
4.4
通讯作者：
S. Moayedi;V. Nasirian;F. Lewis;A. Davoudi
中科院分区：
文献类型：
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作者：
S. Moayedi;V. Nasirian;F. Lewis;A. Davoudi
提出了一种分布式网络化的并联变流器均载方法。使用共识投票协议，消除了对主转换器或中央控制器的需要。所提出的模块化结构不需要有源转换器的数量的先验知识，这使得其成为即插即用操作的可行选择。在所需的设定点的电压调节和每单位电流的共识，分析证明了稳态条件。此外，在没有集中式控制器的情况下，单独测量每个转换器的输出电压可能导致测量失配。分析了这种电压失配对控制器性能的影响，并提出了解决方案。实验结果验证了所提出的分布式控制方法，使用一个并行的四转换器系统，并显示其有效性，在响应操作条件的变化和其弹性对转换器或通信链路的损失。
A distributed networked method for load sharing of parallel converters is proposed. Using consensus-voting protocols, the need for a master converter or a central controller is eliminated. The proposed modular structure does not require a priori knowledge of the number of active converters, which makes it a viable option for a plug-and-play operation. The voltage regulation at the desired set point and the consensus of the per-unit currents are analytically proven for the steady-state conditions. Moreover, in the absence of a centralized controller, measuring output voltages of each converter individually can lead to a measurement mismatch. The effect of this voltage mismatch on the controller performance is analyzed, and a solution is provided. Experimental results verify the proposed distributed control method using a parallel four-converter system and show its efficacy in response to changes in operational conditions and its resiliency against the loss of converters or communication links.