Browse Publications Technical Papers 2009-01-3188
2009-11-10

Comparative Test Results of a Brushless DC Starter Generator vs. Traditional Starter Generator with Brushes 2009-01-3188

This paper provides comparative test results for a brushless starter generator versus a brushed starter generator of equivalent nameplate rating. Key starter generator performance characteristics are measured by test and compared for each type of starter generator. These comparative performance parameters include:
  • Generator output voltage versus load current versus drive speed
  • Generator maximum output power capability versus drive speed
  • Self excitation start-up capability (with no external source of control power)
  • Efficiency during generate operation
  • Efficiency during start operation
  • Performance for high transient load applications
  • Power quality, including ripple voltage and noise on the 28VDC bus
  • Gear box torque induced stress during engine start
  • Short circuit and over-load protection
  • System weight
  • Overhung moment for starter generator unit

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