The system of CUK converter, which is controlled by PI controller, is unstable due to excessive oscillations caused by excessive integrations. To remove this instability, a converter controlled with a proportional-integral-differential (PID) controller is used. The dynamic model of the system is found by the mathematical analysis of the converter. In this article, PID design and control of CUK converter has been implemented. A fourthorder parametric transfer function is obtained here. The converter is simulated in virtual environment by using the obtained parameters. To find the control parameters of the system, an interface design is carried out. The control parameters (P, PI and PID) of the system are obtained by using the Ziegler-Nichols method. The results were evaluated by simulating the system as uncontrolled, PID controlled and Regulated PID controlled. The performance of CUK converter at different values of parameters by using PID controller is found more effective than PI controller.