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High Temperature Motor Drive

Award Information
Agency: Department of Defense
Branch: Army
Contract: W56HZV-18-C-0106
Agency Tracking Number: A181-100-1793
Amount: $154,275.57
Phase: Phase I
Program: SBIR
Solicitation Topic Code: A18-100
Solicitation Number: 18.1
Solicitation Year: 2018
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-05-24
Award End Date (Contract End Date): 2019-11-30
Small Business Information
200 Yellow Place Pines Industrial Center
Rockledge, FL 32955
United States
DUNS: 175302579
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Troy Beechner
 Senior Engineer
 (321) 631-3550
Business Contact
 Dr. Robert P. Scaringe
Phone: (321) 631-3550
Research Institution

The goal of this proposal is to develop a WBG based motor drive that can interface with military 600 Vdc power systems, provide 18 kW of output power, and have full power capability with ambient air temperatures of 71 °C and liquid coolant temperatures of 105 °C. Building upon an existing 105 °C coolant SiC based motor drive, Mainstream Engineering proposes a revised SiC based motor drive that is smaller and lighter than our legacy system. The proposed SiC based motor drive is built around custom SiC modules built in collaboration with WolfSpeed, where the optimum number of MOSFETs and anti-parallel diodes is selected for the specific application. This allows for a reduction in SiC module footprint by more than 50% as compared to Mainstream existing SiC based motor drive. The SiC device switching frequency was selected to be 25 kHz (above the audio frequency range), thus minimizing the system detectability in the field. Even at this high switching frequency, the proposed motor drive is 98.8% efficient, weighs only 13 lbs, and has a high power density with almost a 2x improvement over Mainstream existing SiC based VFD.

* Information listed above is at the time of submission. *

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