Passivity-Based Control of Single-Phase Cascaded H-Bridge Grid-Connected Photovoltaic Inverter

被引：30

作者：

Moeini, Narges ^{[1
]}

Bahrami-Fard, Milad ^{[1
]}

Shahabadini, Masoud ^{[1
]}

Azimi, Seyed Mohammad ^{[2
]}

Iman-Eini, Hossein ^{[1
]}

机构：

[1] Univ Tehran, Coll Engn, Sch Elect & Comp Engn, Tehran 1439957131, Iran

[2] Hamedan Univ Technol, Dept Elect Engn, Hamadan 65155, Hamadan, Iran

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2023年 / 70卷 / 02期

关键词：

Inverters; Control systems; Mathematical models; Damping; Photovoltaic systems; Voltage control; Closed loop systems; Cascaded H-bridge (CHB) converter; grid-connected photovoltaic (PV) systems; passivity-based control; port-controlled Hamiltonian (PCH) model; MULTILEVEL CONVERTER; INTERCONNECTION;

D O I：

10.1109/TIE.2022.3165266

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This article presents a nonlinear passivity-based control for a grid-connected cascaded H-bridge (CHB) photovoltaic (PV) system. The proposed control system is based on a port-controlled Hamiltonian model extracted from the synchronous reference frame system. Grid current dynamics is included in this model. Compared to existing solutions, the proposed control method has a robust performance and enhances the stability of the CHB-based PV system in the case of disturbances such as unequal irradiance over distinct PV arrays or a sudden sag or swell in the grid voltage. This controller also provides the independent control of each dc-link voltage. Therefore, the individual maximum power point tracking algorithms can be realized in each PV array, and the harvested energy can be maximized. Finally, simulation results and experimental investigations are conducted to verify the effectiveness of the proposed strategy.

引用

页码：1512 / 1520

页数：9

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