Optimization of Slip Ring Induction Motor in Fiberizer Drive in a Sugar milling unit - before HARMONIC FILTER INSTALLATION: The overall energy efficiency of a 5000TCD cane sugar mill with a 25mW co-generation power plant and 31.5MVA, 11kV/110kV grid synchronization transformer, improved by 14.3% to 19.1units per ton of cane crushed from its earlier level of 22.3units. How was the energy saving achieved? Well, in this case study we shall find that out with sugar industry's most sensitive and yet rough and tough drive load, the Fiberiser.