GRID INTERCONNECTION OF HIGH STEP UP DC TO AC CONVERTER WITH RENEWABLE SOURCE INTEGRATION AND RESONANT SWITCH CAPACITOR

Abstract

In this paper a new high step up DC to AC converter is introduced with controlled pulse width modulation technology. The power output of the 3 phase AC is connected to the grid using the LC filter. The converter is connected to a low-voltage -renewable power source such as PVA or battery. Low voltage increases in high voltage through the proposed converter with an inductor integrated with a resonant switched capacitor. Due to the synchronization of the Sync unit synchronous boost unit with multiple integrated inductor-SC units the structure can be easily expanded to gain ultrahigh voltage. Electronic power switch works with soft fluctuations with reduced voltage pressure which increases the reliability of the converter. MOSFET power switches are used to control the output voltage with a frequency switch frequency of 100 kHz. This high frequency switch reduces the DC power output bursting and reduces the harmonics on the AC power side. The converted AC power output is synchronized to the grid by the control loop control using an independent reference method. The complete model was developed in the MATLAB Simulink environment with discrete circuit analysis. Graphs are sorted by time and defined using the GUI environmen