论文标题
DC微电网中负载平衡的注释
A note on load balancing in DC microgrids
论文作者
论文摘要
本文考虑了孤立的直流微电网中负载平衡的问题。在这里，直流负载由多个异源直流源喂养，每个DC源都通过升压转换器连接到负载。 DCC的收益提供了一种控制DC来源之间负载电流的方法。控制方案的主要目的是最大程度地减少网络中的总损失，同时将输出电压保持在所需的范围内，为负载电流需求提供并遵守功率来源的VI-Characteristical。在VI-Charactersications的凹度/单调/零件线性的假设下，使用凸松弛解决了该问题。结果表明，放松问题的解决方案很紧。因此，确保所得算法以数值有效的方式达到全局最优性。提供仿真以佐证。
A problem of load balancing in isolated DC microgrids is considered in this paper. Here, a DC load is fed by multiple heterogenous DC sources, each of which is connected to the load via a boost converter. The gains of the DCC's provide for a means to control the division of load current amongst the DC sources. The primary objective of the control scheme is to minimise the total losses in the network, while maintaining the output voltage within a desired range, serving the load current demand and adhering to VI-characteristics of the power sources. Under assumptions of concavity/monotonocity/piece-wise-linearity of the VI-characteristics, the problem is solved using a convex relaxation. It is shown that the solution to the relaxed problem is tight. Thus, the resulting algorithm is guaranteed to reach global optimality in a numerically efficient manner. Simulations are provided for corroboration.
