SOFT SWICHTING CONVERTER FOR REDUCED OUTPUT FILTER FOR HIGH VOLTAGE APPLICATIONS

In this Paper, we analyzed a switched resonant power converter for solar power applications. A solar fed cascaded multilevel inverter is used to reduce the number of semiconductor Switches. This circuit topology integrates a switched resonant Converter with zero-voltage switching (ZVS). Hence to obtain a 15-level inverter, the conventional method requires 28 switches.In binary mode 7 switches are needed for resonant converters. The basic requirements of resonant converters are their small size and high efficiency. A high switching frequency is required to achieve small size. To solve the problems due to the switching losses, some soft-switching approaches must be used at high switching frequencies such as Zero voltage switching (ZVS).Switching losses are reduced less voltage stress and less current distortion. High efficiency and high voltage regulation. This work is to analyses a switched highly efficient resonant converter with ZVS topology based on the traditional ZVS concept for solar power generation applications. The advantage of these three designs is in the reduction of total harmonic distortion by increasing the levels. Simulations are carried out in MATLAB/Simulink and comparisons were made.