Abstract: Based on three-junction (InGaP/InGaAs/Ge) high efficient solar cell, the PV conversion of a high power optical system was achieved, which used high-order precision aspheric Cassegrain system. Two solar PV systems of 200-500 times concentration-ratio were obtained with Zemax and Tracepro. One of them was a monolithic system with solar condenser component. Secondary mirror of high power solar PV system was manufactured using hot-press forming. 16 sets of optical concentration elements combined with three-junction (InGaP/InGaAs/Ge) high efficient solar cells of the same volumes were used to form a complete unit of a high power solar condenser PV system. The solar concentration ratio is greatly increased, which provides a good reference for the design of solar PV power generation and high-convergence-ratio facilities.