Development of New Three-Level Current-Source Inverter for Grid Connected Photovoltaic System
نویسنده
چکیده
This paper discusses a single-phase three-level current source inverter (CSI) driven by a single gate-drive power supply in both chopper and inverter, and its feasibility on grid connected photovoltaic system application. Using this new topology, the complexity of the chopper and inverter circuitry is dramatically reduced by using single gate-drive power supply for all power switches. The circuit works properly at a unity power factor operation when the quasi-sinusoidal current is injected into the grid. The simulation results provide firm evidences about the practical feasibility of the proposed system.
منابع مشابه
A New Control Method for Single-Phase Grid-Connected Inverter Using Instantaneous Power Theory
Because of installation for local consumers and since it is free of all contaminations, connecting photovoltaic cells to the grid via single-phase inverter is significantly on the rise. In this paper, a new simple current control is proposed for a single-phase grid-connected voltage source inverter. Using the PQ theory and modelling a single-phase system as an unbalanced three-phase system, a m...
متن کاملDesign and Implementation of the Predictive Current Control Strategy in the Single Phase Photovoltaic Grid-Connected Inverter Based on Microcontroller
In this paper, photovoltaic (PV) grid-connected inverter which is the core device in PV grid-connected system has been in depth research.An improved predictive current controller has been developed by the Authors for single-phase grid-connected voltage source inverters (VSI).Based on DSP TMS320LF2407A, a 10 kW single-phase grid-connected inverter has been built in this paper.Thus is aimed at us...
متن کاملNew Strategy of Grid Connected Photovoltaic System Using Module Integrated Converters with B4 Inverter to Overcome Partial Shading Effect
This paper proposes a new configuration for solar energy conversion systems. One challenging issue of the photovoltaic (PV) systems is partial shading, and in this paper Module Integrated Converters (MIC) are used to overcome this problem in PV arrays. A few boost converters are employed as MICs to mitigate the shading effect. Furthermore, to reduce the cost and to increase the system performan...
متن کاملA Novel Control Strategy for a Single-phase Grid-connected Power Injection System
In this paper, a novel and simple control strategy, based on state feedback method is suggested to control the power injection system (PIS). The considered PIS is composed of, a DC voltage source, a voltage source inverter (VSI) and a L-C-L filter. The DC source includes the battery source with boosted voltage. The battery can be charged with photovoltaic cells. Since, the grid voltage acts as ...
متن کاملA Grid Connected Transformerless Inverter and its Model Predictive Control Strategy with Leakage Current Elimination Capability
This paper proposes a new single phase transformerless Photovoltaic (PV) inverter for grid connected systems. It consists of six power switches, two diodes, one capacitor and filter at the output stage. The neutral of the grid is directly connected to the negative terminal of the source. This results in constant common mode voltage and zero leakage current. Model Predictive Controller (MPC) tec...
متن کامل