Elimination of zero sequence circulating currents in paralleled three-level T-type inverters with a model predictive control strategy

被引:24
作者
Wang, Xiaodong [1 ,2 ]
Zou, Jianxiao [1 ]
Peng, Ying [1 ]
Xie, Chuan [1 ]
Li, Kai [1 ]
Zapata, Josep Maria Guerrero [3 ]
机构
[1] Univ Elect Sci & Technol China, Sch Automat Engn, Chengdu, Sichuan, Peoples R China
[2] China Acad Engn Phys, Inst Mat, Mianyang, Peoples R China
[3] Aalborg Univ, Dept Energy Technol, Aalborg, Denmark
关键词
electric current control; switching convertors; power grids; predictive control; power harmonic filters; invertors; feedback; zero sequence; three-level T-type inverters; model predictive control strategy; system power rating; common DC-link; novel model predictive control based strategy; parallel operating 3LT; common-mode voltages; CMVs; neutral point potentials; paralleled; 3LT; potential exciting sources; MPC-based zero CMV method; cost function; closed-loop ZSCC feedback control method; MPC-based ZSCC elimination strategy; load current tracking; NPP balance control; GRID-CONNECTED INVERTERS; CONVERTERS; PWM; DESIGN;
D O I
10.1049/iet-pel.2018.5324
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The configuration of modular paralleled three-level T-type inverters (3LT(2)Is) has been widely utilised to extend the system power rating. However, zero sequence circulating currents (ZSCCs) are generated when sharing the common DC-link and the AC side without isolated transformers. This study presents a novel model predictive control (MPC) based strategy to eliminate the ZSCC in parallel operating 3LT(2)Is. Both the differences of common-mode voltages (CMVs) and neutral point potentials (NPPs) between paralleled 3LT(2)Is are investigated to be the potential exciting sources of the ZSCC based on the developed model of the ZSCC. According to this conclusion, an MPC-based zero CMV method which adds an additional term to the cost function is used to reduce the differences of CMVs between paralleled 3LT(2)Is. Besides, a closed-loop ZSCC feedback control method is further introduced to compensate the ZSCC by modifying the cost function. With the proposed MPC-based ZSCC elimination strategy, the ZSCC between the paralleled 3LT(2)Is can be effectively eliminated in both steady and dynamic states. Besides, good performances can be achieved for both load current tracking and NPP balance control. Simulation and experimental results validate the effectiveness of the proposed ZSCC elimination strategy.
引用
收藏
页码:2573 / 2581
页数:9
相关论文
共 50 条
[41]   Robust model predictive control for three-level voltage source inverters [J].
Hong, Jianfeng ;
Zhang, Xing ;
Cao, Renxian .
JOURNAL OF POWER ELECTRONICS, 2021, 21 (05) :747-756
[42]   A Novel Model Predictive Control Algorithm to Suppress the Zero-Sequence Circulating Currents for Parallel Three-Phase Voltage Source Inverters [J].
Zhang, Zicheng ;
Chen, Alian ;
Xing, Xiangyang ;
Zhang, Chenghui .
APEC 2016 31ST ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, 2016, :3465-3470
[43]   Fault Tolerant Control Methods for Three-Level Boost T-Type Inverter [J].
Do, Duc-Tri ;
Tran, Vinh-Thanh ;
Nguyen, Minh-Khai ;
Naik, Sanjeev M. .
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2023, 70 (06) :5463-5473
[44]   Design and Validation of SVPWM Algorithm for Thermal Protection of T-Type Three-Level Inverters [J].
Aly, Mokhtar ;
Dousoky, Gamal M. ;
Shoyama, Masahito .
2015 IEEE INTERNATIONAL TELECOMMUNICATIONS ENERGY CONFERENCE (INTELEC), 2015,
[45]   Optimal switching sequence model predictive control for three-level NPC grid-connected inverters [J].
Lyu, Jianguo ;
Yan, Han ;
Ding, Jinyong ;
Wu, Qiuwei ;
Lyu, Xun ;
Sun, Zhuang .
IET POWER ELECTRONICS, 2021, 14 (03) :626-639
[46]   A Fault Tolerant Control Strategy for Three-Level T-Type Inverter in LVRT/HVRT Operation [J].
Pang, Xianzhe ;
Chi, Shumei ;
Ren, Qicai ;
Chen, Alian .
2024 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC, 2024, :2743-2748
[47]   Current Sensorless Sliding-Mode Voltage Control for LC Filtered Three-Level T-Type Inverters [J].
Fu, Cheng ;
Zhang, Chenghui ;
Zhang, Guanguan ;
Zhang, Zicheng .
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2024, 71 (04) :2264-2268
[48]   Model Predictive Control With Constant Switching Frequency for Three-Level T-Type Inverter-Fed PMSM Drives [J].
Xu, Shuai ;
Sun, Zhenyao ;
Yao, Chunxing ;
Zhang, Han ;
Hua, Wei ;
Ma, Guangtong .
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2022, 69 (09) :8839-8850
[49]   Robust Sequential Model-Free Predictive Control of a Three-Level T-Type Shunt Active Power Filter [J].
Wang, Xuechun ;
Hu, Jiefeng ;
Garcia, Cristian ;
Rodriguez, Jose ;
Long, Bo .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2024, 39 (08) :9505-9517
[50]   Three-Phase Embedded Modified-Z-Source Three-Level T-Type Inverters [J].
Huynh, Anh-Tuan ;
Ho, Anh-Vu ;
Chun, Tae-Won .
IEEE ACCESS, 2020, 8 :130740-130750