Case Study: Electric starter System


An engineering integrator needed to replace the traditional hydraulic start system on gas turbine generators with a more compact efficient solution. Traditional pneumatic/hydraulic starter systems are complex and demand comprehensive maintenance due to the presence of filters, valves, solenoids, reservoirs, pumps/compressors, gauges, heat exchangers, piping/hoses and fittings.


Custom Designed Permanent Magnet AC Motor

  • Performance: intermittent duty up to 335 lb-ft torque
  • Weight: 145.5 lbs.
  • Dimensions: 12.28” l by 12.13” h
  • Liquid cooled


  • 80% reduction in package weight and physical dimensions
  • Exceptional performance.
  • Efficiency improved from 92% to 97% with POWERTEC’s solution
  • Extended service life, engineered solution
    rated for 40-year life expectancy


POWERTEC partnered with the customer to design and manufacture a heavy-duty PMAC motor interacting with an overrunning clutch.

  • The electric motor was designed to fit in a compact physical space and weight restrictions.
  • The motor enclosure was designed to meet UL, ATEX, and IECEx Class 1 div 2, zone 2.

Download Printable Case Study

Electric Starter System – Printable Version