Device for realizing a fast battery charge and a motor drive for electric vehicles using an AC / DC converter

摘要

An apparatus includes a controller, a switch block and a three-phase bidirectional AC / DC converter. The switch block has a first interface connected to a power network, a second interface connected to an electric motor, and a third interface connected to the three-phase bidirectional AC / DC converter having a first, a second, and a second interface a third single-phase AC / DC converter module having inputs and outputs connected to an output node and a respective transformer configured to provide electrical isolation. In a first mode of operation, the switch block connects the power grid to the AC / DC converter for charging a battery connected to the output node and disconnects the electric motor. In a second mode of operation, the switch block disconnects the power grid and connects the electric motor to the AC / DC converter, which is controlled to convert the DC power removed from the battery to power the electric motor.