الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The need of renewable energy sources has been increased since the traditional sources became limited. There are different techniques for integrating the renewable sources with the power grids; where different types of power electronic converters can be employed to integrate the renewable energy sources such as voltage source converters, current source converters, impedance source converters, and Split-Source converters. Although voltage source inverter (VSI) and current source inverter (CSI) are commonly utilized in various industrial applications, both have a drawback of limited voltage range operation. It is needed to develop power converters characterized with a wide operating range with the capability of voltage bucking/boosting for maximum power point tracking and grid integration purposes, in addition the converters must have the ability of DC-AC power inversion and viceversa to deliver and control the renewable harvested power to the AC grid. To add these features to the conventional VSI and CSI, an additional dedicated DC-DC converter stage should be employed before the inversion stage. The inserted stage utilizes active and passive circuit components in order to buck/boost the input DC link of the inverter bridge. This type of converters is widely known as two stage converters. Regardless of the remarkable robust performance of the two stage converters, adding an extra stage with extra active and passive components increases system complexity, losses, cost and footprint size. Consequently, single stage buck/boost inverters were introduced, offering better features compared to two-stage converters. In literature, Split-Source Inverter (SSI) was introduced as a single-stage DC-AC converter with boosting capability without adding any extra active switches to the main VSI topology with simple control strategies. In the presented work, a Nine-Switch Inverter (NSI) is merged with the Split-Source Inverter concept, i.e. Split-Source Nine-Switch inverter (SSNSI) is proposed with one DC port for PV integration and two three-phase AC ports, one for the wind energy integration and the other port is for the AC grid. The SSNSI provides hybrid renewable energy integration with less complexity and less cost compared to the conventional solutions. The suitable modulation techniques along with the control system of the proposed architecture are presented. In addition, a mathematical analysis and full design are also presented. A MATLAB/SIMULINK® simulation comparative study is carried out for various modulation techniques of the proposed SSNSI architecture. In addition, a simulation model for hybrid renewable energy integration with power grid has been built to show the effectiveness of the proposed architecture. Finally, experimental down scaled experimental prototype is implemented for validating the concept with various types of the SSNSI modulation techniques. The simulation and experimental results elucidate the mentioned claims.