Design and Performance Analysis of Cuk SIDO Converter Using PI-Lead Compensator for EV Auxiliary Power Supply

This article presents a proportional–integral–lead (PI-Lead) compensator for a single-input multi-output (SIMO) converter used in EV auxiliary power supply applications. The proposed SIMO converter (SIMOC) is made by adding an extra switch and inductor to each output port of the standard Cuk converter. This converter archives N-outputs with independent control. To bring out better clarity about the design and analysis of SIMO converter, the operating principle, mathematical modeling and performance characteristics of a simplified Cuk single input dual output converter (SIDOC) are analyzed. However, the cross-regulation (CR) and cross-coupling (CC) problems caused by the coupled capacitor in Cuk SIDOC make the converter unstable. Also, these problems make it harder to design the control constraints. So, this article suggests the design and analysis of a PI-Lead compensator to deal with the converter's CC and CR problems. MATLAB/Simulink is used to test how well the proposed control algorithm works. A hardware prototype is also made in the laboratory to validate the efficacy of the proposed controller. The transient performance of Cuk SIDOC with the proposed control algorithm proves that it can eliminate CC and CR effects and handle parameter uncertainties.