TRANSFORMERLESS CASCADED MULTILEVEL INVERTER FOR PHOTOVOLTAIC SYSTEMS
- This article a hybrid multicarrier pulsewidth modulation (H-MCPWM) technique to reduce leakage current in a transformerless
cascaded multilevel inverter for photovoltaic (PV) systems.
- The transformerless
PV inverter topology has the advantages of simple structure, low weight and
provides higher efficiency.
- However, the topology makes a path for leakage current
to flow through parasitic capacitance formed between the PV module and the
ground. A modulation technique has significant impact to reduce the leakage
current without adding any extra component.
- The proposedH-MCPWMtechnique
ensures low leakage current in the transformerless PV inverter system with
simplicity in implementation of the modulation technique using lesser number of
carriers. Experimental prototype developed in the laboratory demonstrates the
performance of the proposed modulation technique in reducing the leakage
current.
No comments:
Post a Comment