A DC-Side Sensorless Cascaded H-Bridge Multilevel Converter-Based Photovoltaic System

被引：78
作者：
Farivar, Ghias [1 ]
Hredzak, Branislav [1 ]
Agelidis, Vassilios G. [1 ]
机构：
[1] Univ New S Wales, Sch Elect Engn & Telecommun, Australian Energy Res Inst, Sydney, NSW 2052, Australia
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2016年 / 63卷 / 07期
关键词：
Capacitor-voltage estimation; cascaded H-bridge (CHB) converter; photovoltaic (PV) system; ALGORITHM; INVERTER; TRACKING; MODULE;
D O I：
10.1109/TIE.2016.2544243
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, a cascaded H-Bridge (CHB)-multilevel converter (MC)-based photovoltaic (PV) system with no voltage or current sensors at the dc-side is proposed. Eliminating the dc-side sensors simplifies the hardware, leading to lower cost and higher reliability of the PV system. A novel scheme estimating the capacitors' voltages from the ac output voltage of the inverter is developed. The scheme allows replacing all dc-side voltage sensors by a single-voltage sensor at the ac-side of the converter. Furthermore, the dc current sensors, conventionally required for the maximum power point tracking (MPPT), are also eliminated. Instead, the outputs from the capacitors' voltage control systems are utilized for the MPPT. The effectiveness of the proposed dc-side sensorless system is experimentally demonstrated on a 2-kW single-phase seven-level CHB converter-based PV system.
引用
收藏
页码：4233 / 4241
页数：9
相关论文
共 30 条
[1]  
Alonso O, 2003, IEEE POWER ELECTRON, P731
[2]   Efficiency evaluation in grid connected photovoltaic energy conversion systems [J].
Cavalcanti, MC ;
Azevedo, GMS ;
Amaral, BA ;
de Oliveira, KC ;
Neves, FAS ;
Lins, ZD .
2005 IEEE 36th Power Electronic Specialists Conference (PESC), Vols 1-3, 2005, :269-275
[3]   A Multilevel Inverter for Photovoltaic Systems With Fuzzy Logic Control [J].
Cecati, Carlo ;
Ciancetta, Fabrizio ;
Siano, Pierluigi .
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2010, 57 (12) :4115-4125
[4]   Energy-Balance Control of PV Cascaded Multilevel Grid-Connected Inverters Under Level-Shifted and Phase-Shifted PWMs [J].
Chavarria, Javier ;
Biel, Domingo ;
Guinjoan, Francesc ;
Meza, Carlos ;
Negroni, Juan J. .
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2013, 60 (01) :98-111
[5]  
Chithra M., 2011, 2011 Proceedings of International Conference on Emerging Trends in Electrical and Computer Technology (ICETECT 2011), P442, DOI 10.1109/ICETECT.2011.5760157
[6]   Direct MPPT Algorithm for PV Sources With Only Voltage Measurements [J].
Dallago, Enrico ;
Liberale, Alessandro ;
Miotti, Davide ;
Venchi, Giuseppe .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2015, 30 (12) :6742-6750
[7]   Theoretical and Experimental Analysis of an MPP Detection Algorithm Employing a Single-Voltage Sensor Only and a Noisy Signal [J].
Dallago, Enrico ;
Finarelli, Daniele Gianluigi ;
Gianazza, Ugo Pietro ;
Barnabei, Alessandro Lazzarini ;
Liberale, Alessandro .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2013, 28 (11) :5088-5097
[8]  
Farivar G., 2014, P EUR C POW EL APPL, P1
[9]   Decoupled Control System for Cascaded H-Bridge Multilevel Converter Based STATCOM [J].
Farivar, Ghias ;
Hredzak, Branislav ;
Agelidis, Vassilios G. .
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2016, 63 (01) :322-331
[10]   Reduced-Capacitance Thin-Film H-Bridge Multilevel STATCOM Control Utilizing an Analytic Filtering Scheme [J].
Farivar, Ghias ;
Hredzak, Branislav ;
Agelidis, Vassilios G. .
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2015, 62 (10) :6457-6468
123