Applying module-link method to multiple power supplies paralleled

In this paper, a novel current sharing control strategy, named module link, is used to realize multiple modules paralleled. To achieve this goal, there are three full-bridge phase-shift converters are used as three modules and connected in parallel to feed the load. In this study, three phase-shift control integrated circuits, named UCC28950 made by Texas Instruments Co., are used to control individual three modules. These controlled modules, together with the designed analogue current sharing control circuit, can make the load current distributed among them as evenly as possible. Finally, some experimental results are provided to demonstrate the feasibility and effectiveness of the proposed current sharing control strategy. Above all, the proposed module-link method can be applied to N modules paralleled.