Frequency-modulated multiport resonant converters (MPRCs) incorporate additional controllable elements, such as controlled inductors, capacitors, or rectifiers, to regulate indi- vidual output ports. However, existing studies do not clearly describe how the closed-loop control of individual output ports, achieved using these controllable elements, is to be combined with conventional frequency-modulated control approaches. In this paper, a generalized architecture is proposed to unify variable- frequency control of MPRCs with strategies involving other controllable components. The stability of the proposed control approach, as well as the optimization of control effort achieved through it, is evaluated for a controlled rectifier. Simulation and experimental results on a 100V-to-12V, 600W, 4-output MPRC are presented to validate the proposed strategy.
