Abstract: A system for modulating a frequency output of a generator coupled to an electric distribution network is described herein. The system includes: a doubly-fed induction generator coupled to a power source selected from at least one of hydropower and fuel combustion, the generator providing an electrical power output having a first frequency based on a rotational speed of the generator; a controller for selecting the rotational speed of the generator; and a converter coupled to the generator for changing the frequency of the output to a selected value, in response to selecting the rotational speed. Methods for modulating a frequency output of a generator coupled to an electric distribution network are also described.

Abstract: A system for modulating a frequency output of a generator coupled to an electric distribution network is described herein. The system includes: a doubly-fed induction generator coupled to a power source selected from at least one of hydropower and fuel combustion, the generator providing an electrical power output having a first frequency based on a rotational speed of the generator; a controller for selecting the rotational speed of the generator; and a converter coupled to the generator for changing the frequency of the output to a selected value, in response to selecting the rotational speed. Methods for modulating a frequency output of a generator coupled to an electric distribution network are also described.

Abstract: Methods and systems for inspecting rotatable machine components are provided. The system includes a fiber optic port configured to extend through a first aperture of a machine casing wherein the port includes an interior end and an exterior end. The system further includes an imager configured to optically couple to the exterior end. The imager includes a light intensifier capable of generate images of inspection components though the port using ambient light. The imager further includes an image capture gate configured to control an acquisition time of the generated images.

Abstract: Methods and systems for inspecting rotatable machine components are provided. The system includes a fiber optic port configured to extend through a first aperture of a machine casing wherein the port includes an interior end and an exterior end. The system further includes an imager configured to optically couple to the exterior end. The imager includes a light intensifier capable of generate images of inspection components though the port using ambient light. The imager further includes an image capture gate configured to control an acquisition time of the generated images.