Hybrid energy sources are much needed to meet the power demand for various real-time applications, and the desired output level is attained with the help of various advanced power converter topologies. Here, the hybrid energy source-fed quasi-Z-source cascaded H-bridge inverter (QZS-CHI) is implemented for a gridconnected system. The conventional multilevel inverter topologies are suitable for voltage buck operation, but this proposed system includes quasi-Z-source inverter network, which leads voltage buck-boost operation without any additional dc-dc converter. Modified space vector modulation (MSVM) technique is developed to control the QZS-CHI system, which leads to reduced total harmonic distortion(THD), reduced common-mode voltage (CMV), controlled output current, and improved output voltage. The proposed system QZS-CHI is energized using a hybrid energy source with a photovoltaic (PV) system and wind energy conversion system (WECS). With the help of shoot through mode in QZS, the output voltage is boosted without an additional converter and CMV is minimized by the proper utilization of medium and small switching state vectors. To assess the proposed technique, a laboratory prototype model is built and analyzed under different cases. From the obtained results, it is observed that the proposed method reduces THD to 2.15% for output voltage and 2.99% for output current, and common-mode voltage is reduced to V dc /6 times of applied dc voltage.common mode voltage(CMV), modified space vector modulation (MSVM), photovoltaic (PV) system and wind energy conversion system (WECS), quasi-Z-source cascaded Hbridge inverter (QZS-CHI), total harmonic distortion(THD)

Pulse width modulation (PWM) methods play a major role to control the various power electronic converters to progress the recital of the system. In this paper, a comparative analysis is done for three dimensional space vector modulation (3D-SVM) and four dimensional space vector modulation (4D-SVM) for five-phase voltage source inverter. 3D-SVM method comprises all qualities of conventional SVM; switching time calculation is simple and much suitable for three-phase system; where in five-phase system, it has redundant switching state vectors. 4D-SVM includes advantages of 3D-SVM and other conventional methods, it employs only nonredundant switching state vectors; it directs to diminish the intricacy in switching time calculations and avoids trigonometric calculations and look up tables for reference vector identification. The various parameters such as total harmonic distortion, improved output voltage, minimized common mode voltage and switching time calculation are analyzed and compared for 3D-SVM and 4D-SVM techniques. Simulation and hardware results are acquired and established using matlab simulink and FPGA processor, respectively.