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张子成,陈阿莲,邢相洋.改进的并网逆变器模型预测控制方法[J].电源学报,2018,16(2):137-143
改进的并网逆变器模型预测控制方法
Improved Model Predictive Control Method Based on Grid-connected Inverter
投稿时间:2015-12-22  修订日期:2017-12-05
DOI:10.13234/j.issn.2095-2805.2018.2.137
中文关键词:  三相并网逆变器  改进预测控制  电流跟踪精度  开关切换  有效作用时间
英文关键词:three-phase grid-connected inverter  improved predictive control  current tracking accuracy  switch operation  effective time
基金项目:国家自然科学基金资助项目(51377101);教育部新世纪优秀人才支持计划资助项目(NCET-13-0339)
作者单位E-mail
张子成 山东大学控制科学与工程学院, 济南 250061  
陈阿莲 山东大学控制科学与工程学院, 济南 250061 chenalian@sdu.edu.cn 
邢相洋 山东大学控制科学与工程学院, 济南 250061  
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中文摘要:
      三相并网逆变器因具有高效率、高功率以及低成本等优点而备受关注,模型预测控制鲁棒性强、动态响应快,因此被广泛应用于并网逆变器的控制中。但传统预测控制存在开关状态切换不规律的缺点,将降低电流跟踪精度,产生输出脉动和电磁噪声。针对上述缺点,提出了一种基于开关状态选择和矢量作用时间的改进预测控制方法,将矢量作用时间作为一个维度参与控制,使电流的跟踪精度得到改善,并减少逆变器输出电流畸变和电磁噪声。仿真和实验结果验证了算法的可行性与有效性。
英文摘要:
      Three-phase grid-connected inverters have been popularized owing to their high efficiency, higher power and low cost. The model predictive control method, which has the merits of high robustness and fast dynamic response, has been widely applied to the control of grid-connected inverters. However, the traditional predictive control has the disadvantage of irregular switching operation, which will reduce the current tracking accuracy and generate output pulse as well as electromagnetic noises. To solve the above problems, an improved model predictive control method is proposed based on the selection of switching states and the effective time of vectors. The second factor is considered as a dimension in the control, which improves the current tracking accuracy and reduces the inverter's output current distortion and electromagnetic noises. The feasibility and effectiveness of the proposed method were verified by simulation and experimental results.
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