Design and simulation of solar power plant with fuzzy MPPT and fully sinusoidal current by multilevel hysteresis controller

Hysteresis modulation has a very wide application for the power inverters. This application is arising from the very fast dynamic response and the reference capability of the high frequency range. On the other hand, the maximum power point tracking causes to increase the received power without need to replace the solar array. Also utilizing the multilevel cascaded H-bridge inverter, several PV arrays can be connected together as motivate to increase the power quality and reduce the switching frequency and the filter size. In this paper, the multilevel and improved hysteresis control methods are simulated and compared. The results of the two methods express increasing the main component of the current and reducing THD in the improved method. Then general simulation of the solar power plant connected to the DC/DC SEPIC converter with maximum power point tracking capability by Fuzzy algorithm and the five-level cascaded H-bridge inverter with fully sinusoidal output and controlled by the multilevel improved hysteresis method is presented.

کلیدواژه ها:

power converter ، multilevel inverter ، hysteresis control ، Fuzzy ، MPPT