This paper investigates the design and performance of a 150 W single-phase current-source grid-connected inverter topology that is based on a PV array and DC link inductor acting as a constant-current source. The inverter is implemented using a single boost switch, an H-bridge inverter, and a CL output filter. The inverter output current is simply controlled using the boost switch and open-loop or feedforward control. The dark I-V configuration is used to simulate two series PV modules. Comprehensive test results are obtained to validate the computer simulation results. Furthermore, the proposed inverter's ability to deliver a sinusoidal current to the grid while meeting the appropriate standards, i.e. total harmonic distortion and power factor requirements, is also examined for various modulation index values and irradiances.
Photovoltaic cells, pulse width modulation inverters, solar power generation, switching converters
ERTAŞGIN, GÜRHAN; SOONG, WEN LIANG; and ERTUGRUL, NESIMI
"Performance analysis of a low-cost current-source 1-ph grid-connected PV inverter,"
Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 23:
6, Article 32.
Available at: https://journals.tubitak.gov.tr/elektrik/vol23/iss6/32