| 基于滑模观测器的三电平风力发电并网逆变器无差拍优化模型预测控制 |
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| 引用本文： | 张博宸,周羽生,周文晴,汤赐,肖辉.基于滑模观测器的三电平风力发电并网逆变器无差拍优化模型预测控制[J].电测与仪表,2024,61(4):176-183. |
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| 作者姓名： | 张博宸 周羽生 周文晴 汤赐 肖辉 |
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| 作者单位： | 长沙理工大学-电气与信息工程学院,长沙理工大学-电气与信息工程学院,湖南信息学院电子科学与工程学院,长沙理工大学-电气与信息工程学院,长沙理工大学-电气与信息工程学院 |
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| 基金项目： | 国家自然科学基金项目（51307009）；湖南省教育厅科学研究重点项目（19A018）。 |
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| 摘 要： | 针对中点钳位型（NPC）三电平并网逆变器系统，提出了一种基于滑模观测器的无差拍可优化有限控制集模型预测控制策略。首先，为了降低电网电流谐波量及有功和无功功率的独立控制，采用了基于幂次函数的滑模观测器，实现对电网电压和耦合项进行实时性观测；然后以滑模观测器为基础，结合空间电压矢量位置信息，提出了基于电流无差拍的优化有限控制集模型预测控制，减少了控制计算量；其次通过基于中点不平衡电压补偿的性能代价目标函数，提高了控制系统的性能。仿真结果表明了该控制策略的可靠性和有效性。
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| 关 键 词： | 并网系统 滑模观测器 NPC型三电平逆变器 模型预测控制 中点不平衡电压 |
| 收稿时间： | 2021/2/8 0:00:00 |
| 修稿时间： | 2021/3/20 0:00:00 |
Optimal Model Prediction Control for Three-level Grid-connected Inverters Without Differential Beat Based on Sliding Mode Observer |
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| Zhang bo chen,zhou yu sheng,zhou wen qing,tang ci and xiao hui.Optimal Model Prediction Control for Three-level Grid-connected Inverters Without Differential Beat Based on Sliding Mode Observer[J].Electrical Measurement & Instrumentation,2024,61(4):176-183. |
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| Authors: | Zhang bo chen zhou yu sheng zhou wen qing tang ci and xiao hui |
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| Affiliation: | College of Electrical Engineering and Information, Changsha University of Science and Technology,College of Electrical Engineering and Information, Changsha University of Science and,School of Election Science and Engineering,Hunan University of Information Technology,College of Electrical Engineering and Information, Changsha University of Science and Technology,College of Electrical Engineering and Information, Changsha University of Science and Technology |
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| Abstract: | Aiming at the Neutral-point-clamped(NPC) type three-level grid-connected inverters system, using sliding mode observer technology, a deadbeat optimizable finite control set model predictive control strategy is proposed based on sliding mode observer. Firstly,in order to reduce the grid current harmonic content and independent control of active and reactive power, a sliding mode observer is constructed based on the power function to realize real-time observation of grid voltage and coupling items. Then performance cost objective function is constructed based on the midpoint unbalanced voltage compensation to improve the performance of the control system. The simulation results show that the control strategy is reliable and effective. Secondly,Current deadbeat finite control set model predictive control(FCS-MPC) is proposed based on sliding mode observer and voltage space vector information to reduce control calculation. |
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| Keywords: | Grid-connected system sliding mode control NPC three-level inverters model predictive control midpoint unbalanced voltage |
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