Input-Parallel Output-Parallel DC-DC converters are convenient for high voltage and
high current applications. One important goal of this type connection is to power-share and reduce
circulating current between the converters. Therefore, control methods for power-sharing between
converters should be used when the parameters mismatch. In this paper, a configuration comprising
two DC-DC common grounded Z-source converters with Input-Parallel Output-Parallel connections is
presented, which common grounded Z-source converter have advantages over similar converters. This
study proposes two control strategies: (1) a decentralized inverse-droop control, (2) a general control
strategy. Inverse-droop control is a simple method and does not need any communication between
parallel converters. In the general control strategy, each converter is self-contained, and no external
controller is required for achieving input/ Output Current Sharing, and a few wires are needed to create
the entire system. The simulation results of an Input-Parallel Output-Parallel system comprising two
common grounded Z-source converters are evaluated for investigating effectiveness of general control
and inverse-droop control. It reported performance of the general control method to be better than the
decentralized inverse-droop control method, which enhances the stability and dynamic characteristics
of the system. The validity of the two control strategies has been studied through MATLAB simulation
and the results were satisfactory