Adjustable-Speed Drive Motor Protection Applications and Issues

The uniqueness of the electrical environment (asynchronous connection to power system, variable frequency operation, and harmonics) on the output of adjustable-speed drives (ASDs) requires special consideration to be given to the motor protection. The Working Group has investigated and addressed these concerns. This paper announces the report on the findings of this activity and the recommendations made to the motor protection engineer. The full report can be found at
www.pes-psrc.org
under Published Reports.