Mitsubishi Electric Develops Ultra-thin Robot for Power Generator Inspection

28 January 2017

Mitsubishi Electric Corporation announced that it has developed a 19.9-millimeter-thin inspection robot capable of inspecting a power generator by passing through the narrow gap between the rotor and stator, eliminating the need to remove the rotor. The robot reduces the cost and time of inspections and helps to increase the reliability and availability of power generators.

Conventional generators inspections, which are carried out by professionals every four years, require approximately 34 days to complete, in part because the rotor must be removed. Electric power companies have been looking to shorten these inspections as well as improve inspection accuracy to extend the availability of their generators. Mitsubishi Electric’s ultra-thin inspection robot eliminates the need to remove the rotor, so inspections can be completed in just six days. Further, thanks to its high accuracy, inspections can be carried out less frequently than every four years and help operators avoid stocking parts they do not yet actually need. As a result, Mitsubishi Electric’s new robot is expected to help reduce total inspection costs and improve both the reliability and availability of power generators.