适用于无直流侧电压传感器单相级联H桥型光伏逆变器的直接功率模型预测控制方法

doi:10.11930/j.issn.1004-9649.202005068

中国电力 ›› 2022, Vol. 55 ›› Issue (2): 172-180.DOI: 10.11930/j.issn.1004-9649.202005068

适用于无直流侧电压传感器单相级联H桥型光伏逆变器的直接功率模型预测控制方法

张茜^1,3, 毛义鹏², 余乐^1,2, 杨皓¹

1. 西南交通大学电气工程学院，四川成都 610031;
2. 国网四川省电力公司，四川成都 610000;
3. 国家电网有限公司西南分部，四川成都 610000

收稿日期:2020-05-11 修回日期:2020-12-13 出版日期:2022-02-28 发布日期:2022-02-23
作者简介:余乐（1985—），男，通信作者，博士研究生，从事电力电子与电力传动相关研究，E-mail：Njspeed@163.com
基金资助:
中央高校基本科研业务费专项资金(2682013ZT19，2682013CX017)；大规模清洁能源送出四川省青年科技创新研究团队项目资助

Direct Power Model Predictive Control Method for DC-Side Sensor-Less Single-Phase Cascaded H-Bridges Photovoltaic Inverters

ZHANG Xi^1,3, MAO Yipeng², YU Le^1,2, YANG Hao¹

1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China;
2. State Grid Sichuan Electric Power Co., Ltd., Chengdu 610000, China;
3. Southwest Branch of State Grid, Chengdu 610000, China

Received:2020-05-11 Revised:2020-12-13 Online:2022-02-28 Published:2022-02-23
Supported by:
This work is supported by Special Fundation for Basic Scientific Research of Central Universities (2682013ZT19, 2682013CX017) and Project of Large Scale Clean Energy Delivery Young Science and Technology Innovation Team of Sichuan Province

摘要/Abstract

摘要： 针对大功率光伏发电系统复杂度较大的情况，文中介绍了一种适用于无直流侧电压传感器单相级联H桥型光伏逆变器的直接功率模型预测控制方法。该方法采用顺序计算的思路，将各H桥视为独立的逆变器并逐个完成各H桥的控制。同时，在针对单个H桥的最优调制函数进行计算时，利用逆变器输出电压的变化量对应H桥直流侧电容电压进行重构，并将电容电压控制量嵌入到最优调制函数中以实现电容电压平衡控制。最后，基于Matlab/Simulink仿真环境建立了系统模型，对该方法的性能进行了验证。

关键词: 光伏逆变器, 无直流侧电压传感器, 电容电压平衡, 直接功率, 模型预测

Abstract: In order to reduce the complexity of photovoltaic generation system, a direct power model predictive control method suitable for DC-side sensor-less photovoltaic inverters is presented in this paper. Based on the idea of serial calculation, each H-bridge is considered as a single inverter. In the meantime, when the optimal modulation function is being calculated for each H-bridge, the DC-side capacitor voltage of each H-bridge is reconstructed using the increment of output voltage of inverters. In addition, a term about the error of capacitor voltage is embedded into the optimal modulation function to keep capacitors’ voltages balance. After building a system model through Matlab/Simulink, the performance of the presented method is verified.

Key words: photovoltaic inverter, DC-side sensor-less, capacitor voltage balance, direct power control, model predictive control

张茜, 毛义鹏, 余乐, 杨皓. 适用于无直流侧电压传感器单相级联H桥型光伏逆变器的直接功率模型预测控制方法[J]. 中国电力, 2022, 55(2): 172-180.

ZHANG Xi, MAO Yipeng, YU Le, YANG Hao. Direct Power Model Predictive Control Method for DC-Side Sensor-Less Single-Phase Cascaded H-Bridges Photovoltaic Inverters[J]. Electric Power, 2022, 55(2): 172-180.

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适用于无直流侧电压传感器单相级联H桥型光伏逆变器的直接功率模型预测控制方法

Direct Power Model Predictive Control Method for DC-Side Sensor-Less Single-Phase Cascaded H-Bridges Photovoltaic Inverters

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适用于无直流侧电压传感器单相级联H桥型光伏逆变器的直接功率模型预测控制方法

Direct Power Model Predictive Control Method for DC-Side Sensor-Less Single-Phase Cascaded H-Bridges Photovoltaic Inverters

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