Abstract
Recently, solar-PV energy becomes one of the most vital renewable resources of electrical energy as it is utilized in all life applications. In case of connecting the solar-PV system with the utility grid a voltage-sourced converter (VSC) is required to convert the extracted solar-PV array’s DC power into AC. There are many methods to dominate the active and reactive power produced from the VSC. In the following model we use the current mode control as it has some features such as highly output accuracy, protection against over current troubles, robustness against AC side voltage and load variations. As the produced power from the solar cells is intermittent, the point of maximum power has to be tracked using an MPPT technique. Also, in order to reduce the system harmonics a filter must be implemented in the model. In this paper, a complete model of 50KW grid-connected solar-PV system using current-mode controlled two-level three-phase VSC (grid imposed frequency VSC) is implemented. Also, the Incremental Conductance model to track the point of maximum available power (MPPT) and LCL filter has been provided into the system with total harmonic distortion (THD) analysis in PSCAD/EMTDC
Highlights
The growing consumption of electrical energy in all aspects of life forced the world to search and discover renewable resources of energy to compensate the insufficiency of the required energy
Maximum power point tracking techniques (MPPT) have been utilized in the PV systems to ensure the extraction of maximum available power at any environmental conditions
This paper presents an overview study of gridconnected solar-PV system through current-mode controlled voltage-sourced converter (VSC) with Incremental Conductance method to track the MPP and an LCL filter to minimize the generated harmonics impact with total harmonic distortion analysis
Summary
The growing consumption of electrical energy in all aspects of life forced the world to search and discover renewable resources of energy to compensate the insufficiency of the required energy. Grid-imposed frequency VSC system using currentcontrol mode is executed to hold the instantaneous active and reactive power that transmitted from the inverter to the utility [2]. This mode of control protects the VSC in case of over-current conditions, so it is more preferable. This paper presents an overview study of gridconnected solar-PV system through current-mode controlled VSC with Incremental Conductance method to track the MPP and an LCL filter to minimize the generated harmonics impact with total harmonic distortion analysis. Fig. shows the solar-PV model’s output voltage, current and power, depending on the previous equations and default values
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