Mining technology

SR hybrid drive

The SR (Switched Reluctance) hybrid drive system captures and uses regenerated energy, helping to reduce a machine’s overall fuel consumption and wear and tear on mechanical parts.

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Drive electrification with SR technology

Your path to electrification starts with innovative SR technology that converts diesel to electrical energy. With the SR process, motors become generators, supplying energy to the KESS system for on-demand use of added and substantial power — as high as 1,100 HP.

  • yellow-checkmark Less mechanical parts wear and tear
  • yellow-checkmark Up to 45% reduced fuel consumption
  • yellow-checkmark Reduced diesel emissions and heat

Features and benefits

Kinetic Energy Storage System (KESS)

During propulsion, diesel energy is converted to electricity. Energy flows from the motors and is stored in the KESS unit. During acceleration, the diesel engine and the stored KESS energy generate an additional 550 HP in underground LHDs and 1,100 HP in surface wheel loaders.
SR motor efficiency

Less impact stress on gearing and a high torque-to-inertia ratio mean faster response and increased acceleration. Lower switching frequency as compared to AC systems, promoting longer power electronics and motor insulation life.
A path toward electrification

KESS hybrid technology can result in 30% less fuel consumed than conventional diesel LHDs. The WX18H and WX22H can help reduce ventilation needs and help you drive toward zero emissions and electrification of your underground mining operation.

A rundown on Komatsu's WE1850 and the KESS:SR Hybrid drive system

Designed to be the workhorse of your wheel loader fleet, the versatile and flexible WE1850 features a fuel-efficient SR Hybrid Drive systems that features KESS.

Learn more about the WE1850 wheel loader
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