A high voltage gain modified SEPIC converter is proposed in this paper. This proposed converter has many
advantages i.e., high output voltage, lower voltage stress, high efficiency, voltage gain is high without any
coupled inductor and transformer, continuous input current. Thus, there is no overshoot voltage at turn-off
process for switches. By using single switches, the CCM mode operation can be easily controlled by this
converter, so control system is simple and also wide output values is obtained only by modifying the duty
cycle. This modified converter has lower components than conventional converter. The operating modes and
design of modified converter are discussed. The output power of this converter is 6 watts. By this converter,
this converter capable of developing the two and half times of input voltage. The PV system also used this
converter to develop high voltage gain. This high voltage gain is achieved by using MATLAB/SIMULIMK
platform.