Improved droop control method with precise current sharing and voltage regulation
Improved droop control method with precise current sharing and voltage regulation
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DOI：
10.1049/iet-pel.2014.0809
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发表时间：
2016-03
影响因子：
2
通讯作者：
Hsuang-Chang Chiang;K. Jen;Gwo-Huei You
中科院分区：
文献类型：
--
作者：
Hsuang-Chang Chiang;K. Jen;Gwo-Huei You
下垂控制方法是用于多个变换器的负载共享控制的最简单的方法之一。虽然通过下垂参数可以很好地调节均流精度，但是由于电压下垂，电压调节精度难以很好地保持。此外，由于多变流器系统的小信号模型经常发生较大的变化，系统的稳定性和动态响应往往会下降。科普这两个限制，本研究提出一种改进的下垂控制方法与自动主校正电压调节。并设计了一种鲁棒控制方案，使系统在正常工况下具有良好的稳定性和动态响应。仿真和实验结果证实了该方法的有效性。
The droop control method is one of the simplest methods for load sharing control of multiple converters. Although the current sharing precision can be adjusted to be well through the droop parameter, the voltage regulation precision is hard to be maintained well due to the voltage droop. In addition, the stability and dynamic response is usually degraded since the small-signal model of multiple converter system is usually changed significantly. To cope with these two limitations, this study presents an improved droop control method with automatic master to correct the voltage regulation. A robust control scheme is also provided to maintain a good stability and dynamic response as the design of the normal condition. The proposed method is confirmed with some simulation and experimental results.