The invention provides a 100-KVA micro-grid energy storage bidirectional converter, comprising a controller, a three-phase bridge-type inverter, an adapter and an isolation transformer. The high-voltage end of the isolation transformer is connected with an alternating-current bus; the alternating bus is connected with a power grid via an alternating-current breaker; the lower-voltage end of the isolation transformer is respectively connected with the alternating-current output end of the three-phase bridge-type inverter and the alternating-current input end of the adapter; the direct-current input end of the three-phase bridge-type inverter is provided with a direct-current breaker; the direct-current output end of the adapter is provided with the direct-current breaker; the sampling signal input end of the controller is respectively connected with the direct-current input end/alternating-current output end of the three-phase bridge-type inverter and the direct-current output end/ alternating-current input end of the adapter; the controller controls the outputs of the three-phase bridge-type inverter and the adapter; the controller is also used for controlling an alternating-current contactor, the direct-current breaker and the alternating-current breaker which are connected with the three-phase bridge-type inverter and the adapter; and the controller is provided with a communication interface and a man-machine device interface. The technical scheme is suitable for energy exchanging between different energy storage batteries and the power grid in manners of charging and discharging.