![]() The voltage controllers maintain the constant DC‐link voltage ratio, whereas the current controller injects the sinusoidal current into the grid at unity power factor and track the grid voltage under variation of grid voltage using grid tracker. ![]() ![]() The balancing of DC‐link voltages for an asymmetrical MLI under variable solar parameters as well as grid parameter variation is implemented using the proposed control strategy. The control strategy, including maximum power tracking along with a suitable interface, is implemented for maximum power transfer from the PV source to the single‐phase low‐power grid. This article presents a generalised asymmetrical cascaded multilevel inverter (MLI) for a single‐phase grid‐connected photovoltaic (PV) system and their control strategy.
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