Abstarct: One of the most significant challenges in controlling DC microgrids is inequality of transmission line resistances, which causes errors in power sharing between distributed generations (DGs) and load voltage deviation from its nominal value. Also, local load causes power sharing error and constant power load (CPL) reduces microgrid stability, which should be eliminated with a suitable control system design. One of the common methods to overcome these problems is to use the conventional droop method at the primary control level. Due to its limitations, this method alone cannot achieve the control goals of DC microgrids, and a secondary control level is needed. To solve the mentioned issues, two methods are proposed in this thesis. In the proposed method which is baxsed on the modification of the droop characteristic, by calculating the resistance of the transmission lines and modifying the droop coefficients baxsed on the determined resistances, proportional power sharing and load voltage regulation have been achieved. Still, the power sharing error caused by the local load has not been eliminated. In the proposed consensus-baxsed method, the power sharing error caused by the local has been eliminated by using a corrective characteristic baxsed on the consensus algorithm. Small signal stability analysis has shown that the system damping is high against changes in resistive load and CPL, changes in the resistance of transmission lines, changes in droop coefficients, and errors in calculating the resistance of transmission lines. Also, the simulation in MATLAB/SIMUlixnk software has been performed in an islanded DC microgrid with four parallel boost converters in two modes with and without local loads. High convergence speed, no dependence on load current, calculation of resistance of transmission lines, maintaining stability against plug-and-play and loss of the communication system between two DGs, and efficiency in the presence of both resistive load and CPL are the main features of the proposed methods. To validate the simulation results, laboratory work has been performed using two parallel boost converters with the help of DSP, and the effectiveness of the both control methods has been shown.