OCC Makes History (August 14, 2010):
OCC delivers the world fastest and most compact four quadrant converter to Department of Energy. The OCC-grid-tied inverter enables solar generation, wind power, microhydro, energy storage, demand response, smart grid with a plug and play solution.

Breakthrough Technology:
OCC-GTI leverages unique patented technology invented at Caltech & University of California and developed by the world leading power electronic experts under partial sponsorship of U.S. Department of Energy. OCC-GTI is the first hardware-enabled 3-phase Grid-Tied Inverter that connects DC sources and batteries to AC grid with high reliability, ultrafast dynamics, and simple user interface, enabling precise AC current control. The OCC-GTI features industry leading dynamic speed and leading power density.

• Wind, solar, microhydro, fuelcell power generation
• Battery energy storage charge and discharge
• Regenerative AC load with precise inductance,
capacitance, and resistance control
• Regenerative DC load with precise resistance control

• Bidirectional power flow
• Reactive power control
• Four quadrant power operation
• Anti-islanding
• Low voltage ride through
• 400Hz or variable frequency by custom order

OCC Benefits:
• Hardware enabled control
–– ultrafast, precise, and stable
• High efficiency
–– energy saving
• Simple user interface
–– low maintenance & low service
• Modular plug & play architecture
–– scalable
• Long life design
–– low logistics & installation cost
• Light weight minimum raw material usage
–– environmentally friendly
• Small size
–– space saving
• ETL listed
–– safe and high quality
• Department of Energy sponsored and award winning
–– highly competitive

• OCC-GTI was developed under partial support of U.S. Department of Energy







— Connect DC source to AC grid with ultrafast and precise AC current control



OCC Features:
• One-Cycle Control technology
• Power factor >0.99
• Current harmonics <3%
• Efficiency >97%
• Stable zero load operation
• Leading response speed (100s of microsec)
• Leading light weight < 29 kg (65 lbs)
• Leading power density ~1.2W/cm3 (20W/inch3)
• Single unit 40kW, scalable to MW


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