Bidirectional converter with intermediate circuit

The invention relates to a power converter having three-phase alternating current inputs and outputs (L1, L2, L3, N), a first converter stage (1) having a first input and output and a second input and output (13, 14), an intermediate circuit (3), a second converter stage (2) having a first input and output (21, 22) and a second input and output (23, 24), and a direct current output (A), the first input and output of the first converter stage (1) are electrically connected to the three-phase alternating current input and output (L1, L2, L3, N), and the second input and output (13, 14) of the first converter stage (1) are electrically connected to the intermediate circuit (3). A converter is used in a charging apparatus of an electric vehicle. Currently, known transformerless converters for charging electric vehicles on a single-phase, two-phase or three-phase AC network require many power electronic stages, so that charging equipment for general application on a single-phase, two-phase or three-phase AC networ