AI² Frequency Converters are supplied at power levels ranging from 1kVA single phase to 52.5kVA three phase. Light weight, small size and high reliability frequency converters are achieved with the use of high frequency switching circuitry. Frequency converters are designed to operate within the most stringent environments. Frequency converter units are qualified to meet FAA and military standards for mission critical equipment. Applications range from large-scale military air transport aircraft to medical emergency life support backup power and business jet aircraft completions.

Frequency Converters use a two-stage power conversion topology that provides superior regulation of the output voltage over wide input line variations. An AC/DC processor isolates and scales the input AC voltage to a high voltage internal DC bus. An advanced processor circuit generates a high input power factor and low reflected input line current harmonics. Power is transferred to a high frequency DC/AC bridge inverter circuit to generate an output of 115VAC or 230VAC at 50Hz, 60Hz or 400Hz. Current mode control provides for stable operation into any load, including the non-linear and dynamic loads seen in critical applications.

AI² frequency converters can be connected in parallel or three phase for higher power ratings. The control topology ensures proportional current sharing without the need for output voltage matching. Fast output response and inherently stable feedback loops provide for a frequency converter design with high reliability, low weight and high efficiency.