Five-Level Transformerless Inverter for Single-Phase Solar Photovoltaic Applications

被引:126
作者
Grigoletto, Felipe Bovolini [1 ]
机构
[1] Fed Univ Pampa UNIPAMPA, Elect Syst Res Grp GPSEI, BR-97546550 Alegrete, RS, Brazil
关键词
Inverters; Switches; Topology; Capacitors; Modulation; Leakage currents; Oil insulation; Common ground voltage; multilevel inverters; photovoltaic (PV) systems; transformerless inverters; TOPOLOGIES;
D O I
10.1109/JESTPE.2019.2891937
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
Transformerless inverters are extensively employed in grid-connected photovoltaic (PV) generation systems due to its advantages of achieving low cost and high efficiency. However, the common-mode voltage issues have been motivated the proposition of new topologies, control, and modulation schemes. In common ground PV inverters, the grid neutral line is directly connected to the negative pole of the dc bus. Therefore, the parasitic capacitances are bypassed and the leakage current can be eliminated. In this paper, a five-level common ground transformerless inverter with reduced output harmonic content for PV systems is proposed. In addition, the proposed inverter can process reactive power and it presents a maximum dc-voltage utilization in opposition to half-bridge-based topologies. The operation modes of the proposed inverter, a simple modulation strategy, as well as the design guidelines are analyzed in detail. Finally, experimental results demonstrate the feasibility and good performance of the proposed inverter.
引用
收藏
页码:3411 / 3422
页数:12
相关论文
共 42 条
  • [1] A Single-Phase Transformerless Inverter With Charge Pump Circuit Concept for Grid-Tied PV Applications
    Ardashir, Jaber Fallah
    Sabahi, Mehran
    Hosseini, Seyed Hossein
    Blaabjerg, Frede
    Babaei, Ebrahim
    Gharehpetian, Gevork B.
    [J]. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2017, 64 (07) : 5403 - 5415
  • [2] Modified Single-Phase Single-Stage Grid-Tied Flying Inductor Inverter With MPPT and Suppressed Leakage Current
    Azary, Mehdi Tofigh
    Sabahi, Mehran
    Babaei, Ebrahim
    Meinagh, Farhad Abbasi Aghdam
    [J]. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2018, 65 (01) : 221 - 231
  • [3] Unipolar PWM Strategy for Transformerless PV Grid-Connected Converters
    Barater, Davide
    Buticchi, Giampaolo
    Crinto, Andrea Stefano
    Franceschini, Giovanni
    Lorenzani, Emilio
    [J]. IEEE TRANSACTIONS ON ENERGY CONVERSION, 2012, 27 (04) : 835 - 843
  • [4] Calahorra J. C., 2009, U.S. Patent, Patent No. [2 053 730 A1, 2053730]
  • [5] Craciun BI, 2012, P INT CONF OPTIM EL, P959, DOI 10.1109/OPTIM.2012.6231767
  • [6] A Single-Phase Asymmetrical T-Type Five-Level Transformerless PV Inverter
    Escobar Valderrama, Gerardo
    Vazquez Guzman, Gerardo
    Pool-Mazun, Erick I.
    Raymundo Martinez-Rodriguez, Panfilo
    Lopez-Sanchez, Manuel J.
    Sosa Zuniga, Jose Miguel
    [J]. IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, 2018, 6 (01) : 140 - 150
  • [7] Comparison and Analysis of Single-Phase Transformerless Grid-Connected PV Inverters
    Freddy, Tan Kheng Suan
    Rahim, Nasrudin A.
    Hew, Wooi-Ping
    Che, Hang Seng
    [J]. IEEE TRANSACTIONS ON POWER ELECTRONICS, 2014, 29 (10) : 5358 - 5369
  • [8] Active Damping Scheme for Leakage Current Reduction in Transformerless Three-Phase Grid-Connected PV Inverters
    Giacomini, Julian C.
    Michels, Leandro
    Pinheiro, Humberto
    Rech, Cassiano
    [J]. IEEE TRANSACTIONS ON POWER ELECTRONICS, 2018, 33 (05) : 3988 - 3999
  • [9] Transformerless single-phase multilevel-based photovoltaic inverter
    Gonzalez, Roberto
    Gubia, Eugenio
    Lopez, Jesus
    Marroyo, Luis
    [J]. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2008, 55 (07) : 2694 - 2702
  • [10] Transformerless Inverter With Virtual DC Bus Concept for Cost-Effective Grid-Connected PV Power Systems
    Gu, Yunjie
    Li, Wuhua
    Zhao, Yi
    Yang, Bo
    Li, Chushan
    He, Xiangning
    [J]. IEEE TRANSACTIONS ON POWER ELECTRONICS, 2013, 28 (02) : 793 - 805