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Conversion Efficiency
Experimental Validation
High Efficiency
Leakage Current
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A new highefficiency singlephase transformerless PV inverter topology
A new highefficiency singlephase transformerless PV inverter topology,10.1109/TIE.2009.2024092,IEEE Transactions on Industrial Electronics,Tamás Ker
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A new highefficiency singlephase transformerless PV inverter topology
(
Citations: 14
)
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Tamás Kerekes
,
Remus Teodorescu
,
Pedro Rodríguez
,
Gerardo Vázquez
,
Emiliano Aldabas
There is a strong trend in the photovoltaic (PV) inverter technology to use transformerless topologies in order to acquire higher efficiencies combining with very low ground leakage current. In this paper a new topology, based on the H Bridge with a new AC bypass circuit consisting in a diode rectifier and a switch with clamping to the DC midpoint is proposed. The topology is simulated and experimentally validated and a comparison with other existing topologies is performed. High
conversion efficiency
and low
leakage current
is demonstrated.
Journal:
IEEE Transactions on Industrial Electronics  IEEE TRANS IND ELECTRON
, 2009
DOI:
10.1109/TIE.2009.2024092
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Citation Context
(12)
...An isolation ac linefrequency transformer can be employed, but suffers the big converter volume per se. A highfrequency isolation transformer, however, poses a challenge of topology design. Ref [
1820
] propose multiswitches on...
Dong Dong
,
et al.
Passive filter topology study of singlephase acdc converters for DC ...
...However, the conversion stages decrease the efficiency and make the system more complex [4], [
5
]...
Fabricio Bradaschia
,
et al.
Modulation for ThreePhase Transformerless ZSource Inverter to Reduce...
...Another solution for generating the zero voltage state can be done using a bidirectional switch made of one IGBT and one diodebridge [
109
]...
F. Blaabjerg
,
et al.
Power electronics  key technology for renewable energy systems
...T he worldwideinstalled Photovoltaic (PV) power capacity exhibits a nearly exponential increase and the majority of PV systems are used to supply the generated energy into the electric grid [1,
2
]. A general block diagram of a gridconnected PV system is illustrated in Fig. 1, using a DC/AC inverter in order to interface the energy produced by the PV array into the electric grid...
...Metrics such as the power conversion efficiency and the “European efficiency” are used to evaluate the performance of the designed PV inverter [
2
, 3]...
...C ompared to the gridconnected PV inverters that have galvanic isolation (either on the DC, or the AC side), the transformerless PV inverters have the advantages of lower cost, higher efficiency, smaller size and lighter weight [
2
]...
...The Hbridge, singlephase with DC decoupling, Refu Solar, H5, HERIC, NPC, Conergy, Hbridge zero vector rectifier, threephase fullbridge and fullbridge with split capacitor topologies are widely applied in order to built the power section of transformerless PV inverters since they obtain the highest efficiency [
25
]...
...The leakage ground current problem is significant in the case of the fullbridge inverter (both singleand threephase) [
2
, 16]...
... by up to 5% at light load and high DC input voltage [17], due to the domination of the control unit and switching power losses in that area), the DC input voltage amplitude (typically it is reduced by 0.3%1% per 150 V, depending on the input power level) and the type and operational characteristics (conducting and switching) of the components (semiconductors, magnetic elements and capacitors), which are used to build the PV inverter [
2
, ...
Eftichios Koutroulis
,
et al.
Design optimization of gridconnected PV inverters
...inverter has drawn many attentions for the singlephase transformerless PV inverter because of its higher efficiency, smaller size, and leakage current reduction [
15
]...
...It can avoid high frequency voltage variation at the DC bus terminal; Therefore, the leakage current through the parasitic capacitance of the PV panels can be reduced [1], [
2
]...
YaowMing Chen
,
et al.
H5™ inverter with constantfrequency asynchronous sigmadelta modulati...
References
(10)
Common mode voltage in case of transformerless PV inverters connected to the grid
(
Citations: 9
)
T. Kerekes
,
R. Teodorescu
,
M. Liserre
Published in 2008.
PowerElectronic Systems for the Grid Integration of Renewable Energy Sources: A Survey
(
Citations: 381
)
Juan Manuel Carrasco
,
Leopoldo Garcia Franquelo
,
Jan T. Bialasiewicz
,
Eduardo Galván
,
Ramón C. Portillo Guisado
,
Ma. A. M. Prats
,
José Ignacio León
,
Narciso MorenoAlfonso
Journal:
IEEE Transactions on Industrial Electronics  IEEE TRANS IND ELECTRON
, vol. 53, no. 4, pp. 10021016, 2006
Transformerless Inverter for SinglePhase Photovoltaic Systems
(
Citations: 60
)
Roberto González
,
Jesús López
,
Pablo Sanchis
,
Luis Marroyo
Journal:
IEEE Transactions on Power Electronics  IEEE TRANS POWER ELECT
, vol. 22, no. 2, pp. 693697, 2007
A SingleStage PV Module Integrated Converter Based on a LowPower CurrentSource Inverter
(
Citations: 34
)
Benjamin Sahan
,
Antonio Notholt Vergara
,
Norbert Henze
,
Alfred Engler
,
Peter Zacharias
Journal:
IEEE Transactions on Industrial Electronics  IEEE TRANS IND ELECTRON
, vol. 55, no. 7, pp. 26022609, 2008
Transformerless SinglePhase MultilevelBased Photovoltaic Inverter
(
Citations: 59
)
Roberto Gonzalez
,
Eugenio Gubia
,
JesÚs Lopez
,
Luis Marroyo
Journal:
IEEE Transactions on Industrial Electronics  IEEE TRANS IND ELECTRON
, vol. 55, no. 7, pp. 26942702, 2008
Sort by:
Citations
(14)
Passive filter topology study of singlephase acdc converters for DC nanogrid applications
(
Citations: 4
)
Dong Dong
,
Fang Luo
,
Wei Zhang
,
Dushan Boroyevich
,
Paolo Mattavelli
,
Igor Cvetkovic
,
Li Jiang
,
Pengju Kong
Conference:
Applied Power Electronics Conference and Exposition Annual IEEE Conference  APEC
, pp. 287294, 2011
Modulation for ThreePhase Transformerless ZSource Inverter to Reduce Leakage Currents in Photovoltaic Systems
(
Citations: 1
)
Fabricio Bradaschia
,
Marcelo C. Cavalcanti
,
Pedro E. P. Ferraz
,
Francisco A. S. Neves
,
Euzeli C. dos Santos
,
João H. G. M. da Silva
Journal:
IEEE Transactions on Industrial Electronics  IEEE TRANS IND ELECTRON
, vol. 58, no. 12, pp. 53855395, 2011
Power electronics  key technology for renewable energy systems
F. Blaabjerg
,
F. Iov
,
T. Terekes
,
R. Teodorescu
,
K. Ma
Conference:
Power Electronic and Drive Systems and Technologies Conference  PEDSTC
, 2011
Design optimization of gridconnected PV inverters
Eftichios Koutroulis
,
Frede Blaabjerg
Conference:
Applied Power Electronics Conference and Exposition Annual IEEE Conference  APEC
, pp. 691698, 2011
Stability analysis of reduced leakage current modulation techniques for Zsource inverters in transformerless photovoltaic applications
Fabricio Bradaschia
,
Marcelo C. Cavalcanti
,
Pedro E. P. Ferraz
,
Gustavo M. S. Azevedo
,
Francisco A. S. Neves
,
Euzeli C. dos Santos
Conference:
IEEE Energy Conversion Congress and Exposition  ECCE
, 2011