Modular power converter for series connected batteries

An energy conversion system including:

• a power source configured to generate a first input;
• and
• a modular converter connected to the power source, the modular converter including
• a first switching circuit including a plurality of first converter switching cells, each of the plurality of first converter switching cells configured to convert the first input into a first output signal,
• a second switching circuit including a plurality of second converter switching cells, and
• a transformer configured to couple the first switching circuit to the second switching circuit,
• wherein the transformer is configured to combine the first output signals of the plurality of first converter switching cells to form a combined output,
• the second switching circuit is configured to convert the combined output into a second output signal,
• the first switching circuit is modular such that a quantity of the plurality of first converter switching cells included in the first switching circuit is adjustable,
• the first input is at least one of a direct current (DC) or an alternating current (AC), and
• the first output signals and the combined output are AC.