The three-phase dual active bridge (3-phase DAB) converter has the advantages of bidirectional power transmission, high power level, and has been widely used as a key connection structure between DC microgrids and energy storage systems. However, in the case of voltage mismatch, some switching devices lose their zero-voltage switching (ZVS) capability, resulting in increased losses and reduced converter efficiency. To address this drawback, this paper proposes a 3-phase DAB converter with switch devices shared, which increases the degree of control freedom. By combining pulse width modulation with phase shift control, the devices can still achieve ZVS even in the case of voltage mismatch. High frequency energy pulses are one of the main factors causing electromagnetic interference (EMI). The high-frequency energy pulses generated at the moment of switching are significantly reduced, thus achieving soft switching improves EMI characteristics.The feasibility and effectiveness of this topology have been demonstrated through theoretical analysis, simulation verification, and prototype construction.