Toshiba Dynamic Energy Savings

Toshiba's Dynamic Energy Savings (DES) technology, featured in AS3 and S15 variable frequency drives, enhances energy efficiency for fans and pumps operating at variable speeds. This document outlines how DES reduces motor power loss and current output at lower frequencies, delivering measurable energy savings without added hardware costs.

Key Points

  • Enhanced Drive Efficiency: Toshiba’s Dynamic Energy Savings (Pt=5) improves power savings when operating at lower motor speeds compared to common V/f patterns like Pt=1 and Pt=4.
  • Substantial Power Loss Reduction: Tests show up to 37.5% motor power loss reduction at 40% rated speed and 10% at 70% speed for a 10 HP, 4-pole, NEMA Premium® motor.
  • Applicable Across Industries: Ideal for mining, oil & gas, and water/wastewater industries.
  • Empirical Data Provided: Includes charts comparing RPM vs input power and output current for control patterns Pt=1, Pt=4, and Pt=5.
  • No Additional Hardware Required: The system optimizes motor performance without requiring new components or increasing installation costs.
  • Reduced Current Output: At low frequencies, DES minimizes output current more effectively than other control methods.
  • Target Applications: Suited for use in fans, pumps, mixers, conveyors, compressors, and centrifuges.
  • Manufacturer-Verified Performance: Backed by Toshiba International Corporation with verifiable test data.