Caterpillar Inc. (Peoria, IL), Holt Power Systems Inc. (Sacramento, CA) and Active Power Inc. (Austin, TX) held a power quality seminar and demonstration to unveil the CAT UPS battery-free, energy solution on December 14, 2001, in Sacramento, CA.
The presentation included simulated power outages in which the CAT UPS flywheel system provided ride-through utility power until the Caterpillar generator started. The CAT UPS
system is integrated with a flywheel motor-generator, CleanSource, which stores kinetic
energy. The stored energy is instantly converted to electricity and powers the critical load during utility disturbances or until a standby generator takes over. The power-dense system, jointly developed by Caterpillar and Active Power, provides
back-up power in a compact, efficient, low-maintenance package.