This paper deals the implementation of 3-level output voltage using dual 2-level inverter with control of sub-region based Space Vector Modulation (SR-SVM). Switching loss and voltage stress are the most important issues in multilevel inverters, for keep away from these problems dual inverter system executed. Using this proposed system, the conventional 3-level inverter voltage vectors and switching vectors can be located. In neutral point clamped multilevel inverter, it carries more load current fluctuations due to the DC link capacitors and it requires large capacitors. Based on the sub-region SVM used to control IGBT switches placed in the dual inverter system. The proposed system improves the output voltage with reduced harmonic content with improved dc voltage utilisation. The simulation and hardware results are verified using matlab/simulink and dsPIC microcontroller.

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In this paper, the implementation of Z-Source Inverter based on Maximum power point tracking scheme (MPPT) for photovoltaic (PV) System is employed. This proposed work has the advantage of more power yield with reduced switching elements in power conditioner. Also a single stage power conversion circuit possessing Z-source network which replaces the boost converter set up in conventional mundane maximum power tracking circuits. The maximum power tracking is the trickiest part which is embedded within the inverter control. Therefore the control over inverter not only operates the PV panel at its maximum possible power but also have a check at the capacitor voltage of the Z-source network, thereby making the system more reliable and power efficient.

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