Active Harmonic Filter Application in Ba Na Hills, Vietnam

Here is a great showcase of the effects of applying active harmonic filters on a cable car installation made by Power More in Vietnam. Ba Na Hills Mountain Resort are holders of three Guiness Records – Longest single rope cable car system, Longest distance between stations and Heaviest cable roll. For Ba Na Hills, power quality is a question of safety and service quality. With total harmonic distortion 5 times higher than the national regulated level, Ba Na Hills were facing several problems.

  • Station to station communcation was interrupted
  • Power factor penalties
  • Damaged PFC capacitor units
  • Inerference with PFC controller
  • Reduced motor effeciency in generator mode to 50%

Applying ADF Power Tuning active filters from Comsys to battle both power factor correction and harmonic filtering resulted in:

  • Eliminated risk of PFC failures
  • Eliminated power factor penalties
  • Increased motor efficiency to 100%
  • Improved cable speed

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