DCM-232 Converter: a PV Transformerless Three-phase Inverter
Location: Australia
Publication date: 2011-11-07
Published in: Annual Conference of the IEEE Industrial Electronics Society 2011, Melbourne (Australia) - IECON 2011
ref. DOI: 10.1109/IECON.2011.6119942

Local members

Jose Ignacio Candela

PhD. Senior Researcher. Project Responsible

External members

Vazquez, G. , Aldabas, E. , Etxeberria-Otadui, I.



Nowadays transformerless PV converters are widely used in the energy conversion stage of aPV plant, because their good characteristics regarding efficiency, size, cost and weight. The main problem in transformerless PV systems is the common mode voltage variations that can generate leakage ground currents (LGC) through the parasitic capacitance formed between thePV panels and ground. These LGC are a risk for the users in a PV system therefore they should be avoided. The LGC has a clear origin on the pulse width modulation (PWM) strategy and theconverter structure. In this paper a three-phase inverter with constant common mode voltage (CMV) is proposed. Simulation results are also provided.


Associated projects

National public