Abstract: In order to improve the heat dissipation performance of water-cooled radiators and control the fluid pressure loss at their inlet and outlet, this study takes a wind power converter as an example to carry out the renovation design and performance research of water-cooled radiators. Design a series parallel transformation form for the water-cooled radiator and water-cooled plate of the wind power converter, and divide the flow channel grid of the water-cooled plate; selecting AA6061-T6 aluminum alloy as the main material of the radiator and deionized water as the cooling medium to ensure the stable operation of the system; use flow control valves and flow sensors to achieve adaptive control transformation of water cooling and heat dissipation. The practical results show that compared to before the transformation, the pressure loss at the inlet and outlet after the transformation is relatively small, and the surface temperature is relatively low, indicating that the stability and heat dissipation performance of the water-cooled radiator after the transformation have been improved.