Motor Insulation Material Development for Improved Power Density

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00024-08-C-4124
Agency Tracking Number: N062-142-0728
Amount: $1,138,820.00
Phase: Phase II
Program: SBIR
Awards Year: 2008
Solicitation Year: 2006
Solicitation Topic Code: N06-142
Solicitation Number: 2006.2
Small Business Information
27 Drydock Avenue, Boston, MA, 02210
DUNS: 187659425
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Gerald Foshage
 Mechanical Engineer
 (617) 897-2439
Business Contact
 Erin Corcoran
Title: Contracts Specialist
Phone: (617) 897-2437
Research Institution
The application of reliable, long life electrical machinery in the All Electric Navy is critical for the success of future naval warfare. Development of a Pulse Width Modulated (PWM) inverter fed Permanent Magnet (PM) motor for the DD(X) shipboard propulsion illustrates future trends for large 20 MW, 2000 V, PWM Machines of 310 Tons. Challenges remain with regard to the insulation systems for these large machines. PWM inverters place much greater stress on the insulation system as compared to sinusoidal supplies, due to the high switching frequencies, high voltages and resulting high time rate of change in voltage (dv/dt). These large machines are often operated at voltages that are beyond the partial discharge and corona inception voltage in order to obtain high power density. To obtain long life, new insulation systems developed specifically to address PWM inverter demands are needed to obtain 25-year life goal. Destructive life testing is required to qualify these insulation systems. Test methods and equipment appropriate for the task are needed as well as the preparation and test of samples to establish life curves. SatCon will develop and apply appropriate equipment and methods to support successful application of new insulation systems in these demanding applications.

* information listed above is at the time of submission.

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