Azure Dynamics Corp.

Northeastern University

Mersen USA Newburyport-ma, LLC

Mersen USA Ep Corp.

Dorin Octavian Neacsu

Bradley M Lehman

Roy A Ball

Jonathan C Kim

A method for detecting an arc fault in AC circuits. The method includes monitoring disturbances in an AC voltage signal by analyzing multi-dimensional energy points. A voltage signal is captured and the zero-crossing, minimum peak, and maximum peak are identified. Arcing signatures between the maximum and minimum peaks of the captured AC voltage signal are analyzed to detect an arc fault.

Method for AC arc fault detection using multidimensional energy points

Non-linear frequency droop control for isochronous frequency operation of parallel inverters includes generating a droop constant corresponding to the power level of the given inverter for maintaining the predetermined frequency range of the given inverter; generating the droop from the given inverter power level and the droop constant and calculating in response to the droop, the incremental shift in the output voltage waveform of a given inverter operating in a predfreytermined limited frequency range to enable current sharing among the inverters.

Non-linear droop control system and method for isochronous frequency operation

Inverter-filter non-linearity blanking time and zero current clamping compensation is accomplished by comparing the average output current with the discontinuous current mode threshold values to determine when the average output current is entering a discontinuous current mode and introducing a compensation voltage to the inverter drive voltage in response to the average output current entering a discontinuous current mode to compensate for discontinuous current mode distortion of the inverter output voltage.

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Westford, MA, United States of America

Dorin Octavian Neacsu