Abstract
The paper describes a grid-connected photovoltaic system, which uses the SPWM technology to invert the solar battery voltage to the grid voltage. The system adopts the Boost circuit based on the MPPT to boost the photovoltaic arrays output voltage to the 350V DC voltage, while using MPPT control to maximize the output power of photovoltaic arrays. The system uses the control strategy of the triangle wave comparison to achieve DC/AC inverter. In order to reduce impact on the grid in the process of the cut-in grid, the system adopts the soft cut-in control, that is, after the system detects the normal frequency of the power grid, the controller generates the increasing-amplitude reference sinusoidal current for output current closed-loop control. Using the feed-forward of the grid voltage, the system can eliminate the effect to output current from the gird voltage. In the paper, the simulation result proves the validity of soft cutin control, and the system hardware and software design based on soft cut-in control will be introduced.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
