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Because the invented sensors are immune to electromagnetic interference and can also resist the huge electric stress inside high voltage transformers, they can be installed much closer to the fault sources than current other systems do, which makes the analysis more accurate and prompt. Since the new sensors are ...

Our proposed harvester design addresses several fundamental questions related to low-frequency mechanical-to-electrical conversion process such as: ?How to convert semi-periodic vibrations in to useful electricity with near ideal efficiencies??, ?How to tune the harvester to obtain wide bandwidth such that the same device operates in multiple frequency bands??, and ...

Phase-Locked Loop implementations for single-phase systems that eliminates the need for large low pass filters to dampen 2nd and higher harmonic noise injections into the estimated measurements. Variable feedback can also be implemented to create non-linear, adaptive like controllers for PLL system to increase synchronization times.

Implementations in the ...

Quasi-active islanding detection metehod that does not inject distortions into grid via the output of the converter, but rather relies on the stability of the PLL which, with the proposed implementation, inherently senses a grid disconnect and starts to oscillate.