A Novel Low Voltage Ride Through Control Method For Current Source Grid-connected Photovoltaic Inverters
Also Available Domains DC - AC Converters
Abstract
A Novel Low Voltage Ride Through Control Method for Current Source Grid-Connected Photovoltaic Inverters.
Abstract:
Due to their inherent topology characteristic, current source grid-connected photovoltaic inverters cannot realize low voltage ride through (LVRT) during a serious sag in the grid voltage. Based on mathematical models of three-phase current source grid-connected photovoltaic (PV) inverters, this paper analyzes quantitatively the relationship between steady-state DC-link current and grid voltage, and also derives the steady-state working range of the DC-link current in CSIs. Based on the steady-state working range of the DC-link current and the native characteristics of PV cells, this paper indicates the fundamental reason that three-phase current source inverter cannot realize LVRT. To solve this problem, an improved topology of a current source grid-connected photovoltaic inverter is adopted in this paper, where a chopper circuit is added in the DC link. Meanwhile, a novel control strategy is further proposed to realize LVRT under balanced and unbalanced grid voltage conditions.
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Block Diagram
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Software Configuration:
Operating System : Windows 7/8/10
Application Software : Matlab/Simulink
Hardware Configuration:
RAM : 8 GB / 4 GB (Min)
Processor : I3 / I5(Mostly prefer)
Learning Outcomes
- Introduction to Matlab/Simulink
- What is EISPACK & LINPACK
- How to start with MATLAB
- About Matlab language
- About tools & libraries
- Application of Matlab/Simulink
- About Matlab desktop
- Features of Matlab/Simulink
- Basics on Matlab/Simulink
- Introduction to controllers.
- Study of PWM techniques.
- Project Development Skills:
- Problem analyzing skills
- Problem solving skills
- Creativity and imaginary skills
- Programming skills
- Deployment
- Testing skills
- Debugging skills
- Project presentation skills
- Thesis writing skills
Paper Publishing
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