DC-AC converters for stabilization of output voltage of variable voltage of H2planet stack with fixed output voltage 230VAC (adjustable from 210 to 220-240VAC 50-60Hz) for an optimal use of alternating current loads. Input 12VDC or 24VDC to be achieved through Hy-DC-DC Conv.

The DC-AC Hy-Conv do not directly support SCU (Short Circuit Unit) input of all PEM stack and therefore need to be equipped with suitable DC-DC and ultracapacitors H2planet input for consistent performance.