PSI Repair Services case study SOLUTION Improved Wind Turbine Pitch Drive Design Powers Up Savings Overview PSI Repair Services resolved a widespread issue of wind turbine pitch drive failures [275 in one year] for a leading clean energy company. Root Cause Eighty-five percent of the pitch drive failures were due to capacitor breakdowns. The capacitors overheated internally and expelled electrolytic fluid, destroying the driver board. In addition, transistor failures were due to improper switching frequencies and speeds. Solution PSI Repair Services designed a new and improved driver board, installed upgraded capacitors, and enhanced the transistors to match the switching frequency; eliminating all of the problems. Results 81% Reduction in year- over-year failures,

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