Minimization of currents harmonics injected for grid connected photovoltaic systems using duty-cycle modulation technique
| Autor: | Daniel Tchiotsop, Marc Rostand Douanla, Mathieu Jean Pierre Pesdjock, Justin Roger Mboupda Pone, Godpromesse Kenne |
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| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Total harmonic distortion Control and Optimization Computer science Mechanical Engineering Photovoltaic system 02 engineering and technology Grid 01 natural sciences 020901 industrial engineering & automation Control and Systems Engineering Modulation Duty cycle Control theory Modeling and Simulation Harmonics 0103 physical sciences Electrical and Electronic Engineering 010301 acoustics Pulse-width modulation Civil and Structural Engineering DC bias |
| Zdroj: | International Journal of Dynamics and Control. 9:1013-1023 |
| ISSN: | 2195-2698 2195-268X |
| DOI: | 10.1007/s40435-020-00718-8 |
| Popis: | In this paper we investigate a new modulation technique for the control signals of grid-connected PV inverters. The inverters are connected to the grid via an L-filter. This technique improves the quality of the energy injected into grid by minimising the THD of the currents. Indeed, the harmonics of currents higher than the fundamental and DC component are the cause of several disturbances and electrical damage. Recent studies have shown that the THD of the currents injected into the grid by PV inverters become more important for low sunshine conditions. We propose a solution to this problem using a signal modulation technique that takes into account the advantages of PWM and DCM techniques. An adaptive law of the control gain is proposed in order to establish a new control law that helps to minimize the THD of the current. The results presented validate the approach discussed and rank our method above conventional PWM. The performances of this new method give it a special attention in power quality management. |
| Databáze: | OpenAIRE |
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