We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Design and implementation of a chaotic unipolar sine-pulse modulation technique for a transformerless single-phase grid-connected photovolatic inverter.
- Authors
Kraiem, S.; Hamouda, M.; Ben Hadj Slama, J.
- Abstract
Transformerless grid-connected inverters for photovoltaic (PV) applications provide several advantages such as reduced cost and volume as well as an increased efficiency. However, the removal of the transformer gives rise to several problems related to leakage currents and electromagnetic interferences (EMI). This paper presents different chaotic unipolar sine-pulse width modulation (C-USPWM) techniques for a transformerless grid-connected PV inverter based on parameter selection. The main objective behind this proposed chaotic modulation technique is to reduce the conducted EMI without worsening the power quality and the common-mode voltage (CMV). The method is validated through numerical simulations and experimental tests carried out on laboratory prototype of an optimized H5 inverter (oH5). The obtained results showed its superiority to the conventional unipolar sine-pulse width modulation (USPWM). We showed also that the appropriate parameter selection of the C-UPSWM could advantageously combine an improved EMI performance and an efficient control, making it possible to deliver a significant reduction of the peaks' amplitudes in the frequency spectrum of the common-mode (CM) voltage.
- Subjects
STRAY currents; ELECTROMAGNETIC interference; ELECTRIC inverters; FREQUENCY spectra; CHAOTIC communication; VOLTAGE; COMPUTER simulation
- Publication
Electrical Engineering, 2024, Vol 106, Issue 1, p645
- ISSN
0948-7921
- Publication type
Article
- DOI
10.1007/s00202-023-02003-1