International Journal of Electrical and Electronics Engineering Research (IJEEER) ISSN(P): 2250-155X; ISSN(E): 2278-943X Vol. 4, Issue 1, Feb 2014, 53-62 © TJPRC Pvt. Ltd. A NOVEL PV ARRAY WITH MPPT OF SWITCHED CAPACITOR INVERTER CONNECTED GRID K. OMKAR & E. L. PRATHYUSHA Department of EEE, Shri Vishnu Engineering College, Bhimavaram, Andhra Pradesh, India ABSTRACT A multilevel inverter with a limited number of switching devices is proposed. That (SCI) switched capacitor inverter consists Marx inverter structure and H-bridge. The inverter which outputs of multilevel voltage by switching the DC voltage sources in series and in parallel. In this proposed inverter PV array and MPPT are combined from that the total harmonic distortion are reduced of the output waveforms. Most residential households will use a grid-connected PV system. The PV array inverter with grid THD of the output waveform of the inverter is reduced compared to SC inverter the simulation results has been done in MATLAB/SIMULINK are shown. KEYWORDS: Multilevel Inverter, Switched Capacitor Inverter, PV Array, MPPT INTRODUCTION The last few years Electric Vehicles (EVs), Hybrid Electric Vehicles (HEV) are researching all over the world due to several advantages like to increased fuel efficiency, lower emission and better vehicle performance. These vehicle have to use the large electric drivers to require advanced power electronic inverters to meet the high power demands, one of the drawback in these studies when the switching devices are operated at the high voltages, the switching frequency is restricted. The multilevel inverter has gained good attention in recent years due to its advantages in high power with low harmonics applications. To overcome these problems in multilevel inverters, because their individual devices have a high lower voltage per switching and they operate at high efficiencies because it has a lower frequency than PWM controlled inverters. The inverters can be used in HEV and EV. Several multilevel inverter topologies have been developed like flying capacitor. A charge pump outputs a large voltage than the input voltage with the switched capacitors. When the multiple capacitors and the input voltage sources are connected in parallel, the capacitors are charged. When the multiple capacitors and input voltages are connected in series, the capacitors are discharged. The charge pump outputs the sum of the voltages of the capacitor and the input voltage sources. Our proposed inverter design does not have any inductors can be smaller than a conventional Bi-stage unit it consists of a boost converter and an inverter bridge, which makes the system has a large however, a charge pump has many switching devices it makes a system is more complicated. An SC inverter is similar to a charge pump in the topology. In this SC inverter the output voltage is larger than the input voltage in similar way to the charge pump. Similarly in SC inverter also have many switching devices, which make the system as complicated. The other technique, a matrix inverter has less switching devices compare to the SC inverter, was proposed. DESIGN TOPOLOGY Circuit of SC Inverter is shown below of figure 1