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Medium voltage (2300/4260 V) adjustable speed drive (ASD) ride-through options and implementation methods. Final report

Technical Report ·
OSTI ID:362625
 [1];  [2]
  1. Oregon State Univ., Corvallis, OR (United States). Dept. of Electrical and Computer Engineering
  2. Texas A and M Univ., College Station, TX (United States). Dept. of Electrical Engineering
Adjustable speed drive (ASD) ride-through issues have caused increased concerns due to the susceptibility of drives to power disturbances and the costly results of process disruptions. This study assesses ride-through alternatives for medium voltage applications for several common manufacturers` topologies. This report will help industries and the utilities serving them determine appropriate medium voltage ride-through approaches to serve their applications. The application of medium voltage drives is increasing due to increased reliability, energy efficiency, and improved process control. However, medium voltage drives are susceptible to voltage disturbances such as sags, swells, transients, and momentary outages. According to survey reports, voltage sags of 10--30% below nominal for 3 to 30 cycles account for the majority of power system disturbances. Medium voltage drives tend to experience ride-through problems during voltage sags below 85% of rated voltage for more than one cycle. Depending on the application and the characteristics of the disturbance, the drive-controlled process may be momentarily interrupted or permanently tripped out. Either outcome can result in a significant loss in revenue and costly down time.
Research Organization:
Electric Power Research Inst., Palo Alto, CA (United States); Oregon State Univ., Dept. of Electrical and Computer Engineering, Corvallis, OR (United States); Texas A and M Univ., Dept. of Electrical Engineering, College Station, TX (United States)
Sponsoring Organization:
Electric Power Research Inst., Palo Alto, CA (United States)
OSTI ID:
362625
Report Number(s):
EPRI-TR--111760
Country of Publication:
United States
Language:
English