Predictive direct power control for three-phase grid-connected converters with online parameter identification
Predictive direct power control for three-phase grid-connected converters with online parameter identification
复制标题
具有在线参数识别功能的三相并网变流器的预测直接功率控制
DOI：
10.1002/etep.2240
复制
发表时间：
2017
影响因子：
2.3
通讯作者：
Zhouhua Peng
中科院分区：
文献类型：
--
作者：
Xing Liu;Dan Wang;Zhouhua Peng
众所周知，预测直接功率控制方法会受到建模误差的影响。模型参数的任何微小变化都会降低控制系统的性能和稳定性。然而，在实际实施中，该值难以精确测量。提出了一种基于在线参数辨识技术的三相并网变流器预测直接功率控制方法。该方法基于模型参考自适应系统估计理论，利用在线参数辨识技术解决了参数失配问题。该方法不仅能准确辨识参数，而且在不增加传感器的情况下，提高了系统的动态响应。通过大量的仿真验证了所提出的方法具有良好的稳态和动态性能。版权所有© 2016约翰威利父子有限公司.
It is well known that predictive direct power control method can be influenced by the presence of modeling errors. Any small variations in model parameters will degrade the performance and stability of the control system. However, this value is difficult to be measured precisely in practical implementation. This paper proposes a predictive direct power control method for three‐phase grid‐connected converters with online parameter identification technique. Specifically, the proposed method alleviates the parameter mismatch problem by using the online parameter identification technique based on model reference adaptive system estimation theory. The proposed strategy not only identifies the parameter accurately, but also improves dynamic response without any additional sensors. The excellent steady‐state and dynamic performance of the proposed method are confirmed through extensive simulations. Copyright © 2016 John Wiley & Sons, Ltd.