Modular Power Converter

The present invention provides a power module arranged to receive a DC electric input signal at first and second connection terminals (A, B), and to output an AC electric output signal at third and fourth connection terminals (C, D). A set of capacitors (CAP1, CAP2) are connected between respective sets of connection terminals (A, B, C, D). Two inductors (L1, L2) are connected at least to respective connection terminals (C, D), such as the first inductor (L1) being connected between on set of connection terminals (A, C), and the second inductor (L2) being connected between another set of connection terminals (B, D). A switch network (SWN) with at least one electrically controllable bidirectional two-quadrant switch (s1), is connected between at least two of the four connection terminals (A, B, C, D). The at least one witch (s1) is arranged for being controlled according to a switching cycle, so as to provide an average voltage (V1) of zero across the first inductor (L1) over one switching period of the switching cycle, and to provide an average voltage (V2) of zero across the second inductor (L2) over one switching period. The power module is simple, and can be implemented with only one single switch per module. A DC to AC power converter can be build of a number of interconnected power modules, and such power converter can be designed to provide an AC output voltage in the kV range at a power in the kW range, at a frequency of up to such as 40 MHz.