Patent 8406025 was granted and assigned to Ideal Power Converters on March, 2013 by the United States Patent and Trademark Office.
Methods and systems for power conversion. An energy storage capacitor is contained within an H-bridge subcircuit which allows the capacitor to be connected to the link inductor of a Universal Power Converter with reversible polarity. This provides a “pseudo-phase” drive capability which expands the capabilities of the converter to compensate for zero-crossings in a single-phase power supply.