Dual inverter configuration for grid-connected photovoltaic generation systems

Grandi, Gabriele; Ostojic, D.; Rossi, C.

doi:10.1109/intlec.2007.4448905

Cited by 7 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the dual inverter configuration, total voltage reference must be satisfied, so in case of voltage saturation of one inverter the second has to provide for the missing part. This problem was addressed in [11].…”

Section: Voltage and Power Sharingmentioning

confidence: 99%

See 1 more Smart Citation

Dual-inverter-based MPPT algorithm for grid-connected photovoltaic systems

Grandi

Ostojic

2009

2009 International Conference on Clean Electrical Power

View full text Add to dashboard Cite

A novel MPPT algorithm for three-phase gridconnected photovoltaic generation systems is presented in this paper. Reference is made to a conversion scheme consisting in two balanced arrays of PV modules, each one feeding a standard two-level three-phase voltage source inverter (VSI). The dc-link voltages of each VSI are regulated according with the requirement of the proposed MPPT algorithm, based on the comparison of the operating points of the two PV arrays. Inverters are connected to grid by a three-phase transformer with open-ends winding configuration on inverters side. The resulting conversion structure performs as a power active filter, doubling the power capability of a single VSI, with the additional benefit of voltage multilevel waveforms. The proposed MPPT algorithm has been successfully verified by numerical simulation and experimental tests.Index Terms-PV generation, grid connected system, MPPT algorithm, multilevel inverter.

show abstract

Section: Voltage and Power Sharingmentioning

confidence: 99%

“…In this paper, the dual VSI topology presented by the Authors in [11], [12] is considered, and a novel MPPT algorithm has been applied to maximize power injection into the grid, according to the block diagram of Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Dual-inverter-based MPPT algorithm for grid-connected photovoltaic systems

Grandi

Ostojic

2009

2009 International Conference on Clean Electrical Power

View full text Add to dashboard Cite

show abstract

“…The control algorithm utilized in this paper is based on simple PI controllers [3], [4]. The problem is somewhat similar to power sharing problem investigated in automotive applications, where proper multilevel voltage modulation strategy has been addressed [9].…”

Section: Converter Controlmentioning

confidence: 99%

“…Although it results in steady-state current error it is not a critical drawback since the controlled variable is dc voltage [3], [4]. In particular, the reference voltage * v is here calculated as…”

Section: Converter Controlmentioning

confidence: 99%

See 1 more Smart Citation

Experimental tests on a multilevel converter for grid-connected photovoltaic systems

Grandi

Ostojic

Rossi

2008

2008 11th Workshop on Control and Modeling for Power Electronics

View full text Add to dashboard Cite

A complete set of experimental tests on a novel conversion scheme for three-phase grid-connected photovoltaic (PV) generation systems is presented in this paper. The proposed scheme is based on two insulated strings of PV panels, each one feeding a standard two-level three-phase voltage source inverter (VSI). The inverters are connected to grid by a three-phase transformer with the open winding configuration on inverters side. The resulting conversion structure acts as a multilevel converter, doubling the power capability of a single VSI with given current rating. An original control method has been introduced to regulate the dc-link voltages of each VSI, allowing the whole converter to inject the PV energy into the grid and to perform as a power active filter.

show abstract