STUDI ANALISIS PERBANDINGAN METODE STARTING DIRECT ON LINE (DOL) DAN VARIABEL SPEED DRIVE (VSD) PADA MOTOR FAN UNTUK COOLING TOWER DI PT. RAPP (RIAU ANDALAN PULP PAPER)

Abstract

The large starting current in the starting process has the potential to damage the
induction motor. In minimizing the risk of damage, proper starting methods are needed. The
Direct On Line (DOL) method is a starting method commonly used in induction motors because
of its economical installation and high work efficiency. The starting method which also has good
work efficiency is the Variable Speed Drive (VSD). There needs to be a comparative analysis
between the two methods to find out how the performance of the two methods is.
Research results, the ongoing performance of the two starting methods on the fan
motor for cooling towers shows that the performance of the VSD method is superior to that of
the DOL method. Starting performance on an induction motor can be seen from the efficiency
and economic value of the DOL and VSD methods. This performance is of course taking into
account the current, rotation speed and the resulting output power.