电工技术学报  2020, Vol. 35 Issue (12): 2612-2622    DOI: 10.19595/j.cnki.1000-6753.tces.190684
电力电子 |
并网逆变器无电网电压传感器模型预测控制
郭磊磊1, 金楠1, 李琰琰1, 代林旺2, 孙怡舒1
1.郑州轻工业大学电气信息工程学院 郑州 450002;
2.新能源与储能运行控制国家重点实验室(中国电力科学研究院有限公司) 北京 100192
Grid Voltage Sensorless Model Predictive Control for Grid-Connected Inverters
Guo Leilei1, Jin Nan1, Li Yanyan1, Dai Linwang2, Sun Yishu1
1. College of Electric and Information Engineering Zhengzhou University of Light Industry Zhengzhou 450002 China;
2. State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Beijing 100192 China
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摘要 近年来,模型预测控制被广泛应用于并网逆变器的控制中。为进一步降低并网电流的谐波,提高系统的可靠性,该文提出一种并网逆变器无电网电压传感器双矢量模型预测控制方法。首先,提出一种基于改进型滑模观测器的电网电压在线观测方法,以实现无电网电压传感器控制。所提方法不需要电网的精确频率即可实现电网电压的频率自适应观测。同时,由于观测器中低通滤波器的使用,电网电压背景谐波对电流控制的影响得到一定程度的抑制。其次,为了进一步降低电流谐波,文中基于调制模型预测控制的原理提出一种双矢量模型预测控制方法,并从理论上证明了所提双矢量模型预测控制方法的有效性。详细的对比实验结果验证了所提方法的正确性。
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郭磊磊
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孙怡舒
关键词 并网逆变器模型预测控制滑模观测器双矢量无电网电压传感器    
Abstract:In recent years, model predictive control methods have been widely used to control grid-connected inverters. To further reduce the harmonics of the grid current and improve the reliability of the system, a grid voltage sensorless double-vector model predictive control method for grid- connected inverters is proposed in this paper. Firstly, an improved sliding mode observer-based grid voltage online observation method is proposed to achieve grid voltage sensorless control. The proposed method can realize grid voltage observation without the precise frequency of the grid. Meanwhile, the influence of the grid voltage background harmonics on the current control is restrained to a certain extent due to the utilization of the low-pass filter in the observer. Secondly, to further reduce the current harmonics, a double-vector based-model predictive control method is proposed based on the principle of the modulated model predictive control, and its validity is proved theoretically. Detailed comparative experimental results verify the proposed method.
Key wordsGrid-connected inverters    model predictive control    sliding mode observer    double- vector    grid voltage sensorless   
收稿日期: 2019-06-05     
PACS: TM464  
基金资助:国家自然科学基金项目(51607159,51707176)、新能源与储能运行控制国家重点实验室(中国电力科学研究院有限公司)开放基金和河南省高等学校重点科研项目(18A470020,20A470011)资助
通讯作者: 郭磊磊 男,1987年生,博士,讲师,硕士生导师,主要研究方向为并网逆变器模型预测优化控制等。E-mail: 2006guoleilei@163.com   
作者简介: 金 楠 男,1982年生,副教授,硕士生导师,主要研究方向为新能源变换技术等。E-mail: jinnan@zzuli.edu.cn
引用本文:   
郭磊磊, 金楠, 李琰琰, 代林旺, 孙怡舒. 并网逆变器无电网电压传感器模型预测控制[J]. 电工技术学报, 2020, 35(12): 2612-2622. Guo Leilei, Jin Nan, Li Yanyan, Dai Linwang, Sun Yishu. Grid Voltage Sensorless Model Predictive Control for Grid-Connected Inverters. Transactions of China Electrotechnical Society, 2020, 35(12): 2612-2622.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.190684          https://dgjsxb.ces-transaction.com/CN/Y2020/V35/I12/2612