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Paper Title: Grid Connected Photovoltaic Micro Inverter System using Repetitive Current Control and MPPT for Full and Half Bridge Converters
Authors Name: M.Siva Rama Krishna , B.Siva Naga Raju , S.Ravikanth
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Published Paper Id: IJNRD1805005
Published In: Volume 3 Issue 5, May-2018
Abstract: This paper presents a novel grid-connected boost half-bridge photovoltaic (PV) micro inverter system and its control implementations. In order to achieve low cost, easy control, high efficiency, and high reliability, a boost-half-bridge dc–dc converter using minimal devices is introduced to interface the low-voltage PV module. A full- bridge pulse width-modulated inverter is cascaded and injects synchronized sinusoidal current to the grid. Moreover, a plug-in repetitive current controller based on a fourth-order linear phase IIR filter is proposed to regulate the grid current. High power factor and very low total harmonic distortions are guaranteed under both heavy load and light load conditions. Dynamic stiffness is achieved when load or solar irradiance is changing rapidly. In addition, the dynamic behavior of the boost-half-bridge dc–dc converter is analyzed; a customized maximum power point tracking (MPPT) method, which generates a ramp-changed PV voltage reference is developed accordingly. Variable step size is adopted such that fast tracking speed and high MPPT efficiency are both obtained. Simulation results are provided to verify the validity and performance of the Boost Half Bridge and Full Bridge circuit operations, current control, and MPPT algorithm.
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Cite Article: "Grid Connected Photovoltaic Micro Inverter System using Repetitive Current Control and MPPT for Full and Half Bridge Converters", International Journal of Novel Research and Development (, ISSN:2456-4184, Vol.3, Issue 5, page no.23-27, May-2018, Available :
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