This paper introduces an extension of the existing two-port ”Dynamic Energy Router” (DER) applied to a three port system in the context of an electric vehicle integrating a hydrogen fuel cell and a supercapacitor. The control strategy implemented is feedback linearization to manage the nonlinear dynamics of the system and the efficient energy distribution between the multiports. By incorporating voltage control mechanisms in one port, this method addresses the challenges of the DER energy decay and enhances the overall performance of this device. Simulations are performed in MATLAB/Simulink for testing the DER under different load variations, allowing the system to distribute the energy while considering each device’s restrictions and the defined energy management policy. This work contributes to extending the two-port DER to a three-port DER applied in a hydrogen fuel cell vehicle using a Feedback Linearization control technique, providing a versatile solution for a multi-port system where each port is capable of generating, storing and consuming energy.