NASA SBIR 2020-II Solicitation

Proposal Summary

Proposal Information

Proposal Number:
20-2- S3.02-6450
Phase 1 Contract #:
80NSSC20C0526
Subtopic Title:
Dynamic Power Conversion
Proposal Title:
Energy Buffer Capacitors for Use in Dynamic Power Conversion ACUs

Small Business Concern

   
Firm:
          
Sigma Technologies International, Inc.
          
   
Address:
          
10960 North Stallard Place, Tucson, AZ 85737
          
   
Phone:
          
(520) 575-8013                                                                                                                                                                                
          

Principal Investigator:

   
Name:
          
Angelo Yializis
          
   
E-mail:
          
ayializis@sigmalabs.com
          
   
Address:
          
10960 North Stallard Place, AZ 85737 - 9527
          
   
Phone:
          
(520) 575-8013                                                                                                                                                                                
          

Business Official:

   
Name:
          
Christopher Hohmann
          
   
E-mail:
          
chohmann@sigmalabs.com
          
   
Address:
          
10960 North Stallard Place, AZ 85737 - 9527
          
   
Phone:
          
(520) 575-8013                                                                                                                                                                                
          

Summary Details:

   
Estimated Technology Readiness Level (TRL) :                                                                                                                                                          
Begin: 5
End: 7
          
          
     
Technical Abstract (Limit 2000 characters, approximately 200 words):

Dynamic power generation systems such as Stirling engines are a key element of spacecraft designed for deep space missions, lunar exploration and other applications where photovoltaic arrays have limited, or no exposure to the sun.  Electronic components used to process the electrical power have to operate in close proximity to the Stirling radioisotope generator as well as extreme temperatures.   This development addresses two of the largest components in a advance power control unit (ACU).   An energy buffer capacitor which minimizes ripple current, voltage fluctuations and transient suppression, and an AC power factor correction capacitor that performs a tuning function.  There is a well-defined need, to develop capacitors for this application, to improve the system reliability over at least 20 years of life, and to reduce volume and weight which are critical parameters for any space mission.  The Phase I project demonstrated the use of a disruptive NanolamTM capacitor technology to produce prototypes of 750mF/50VDC energy buffer capacitors and 71mF/240VAV capacitors.  When compared to state of the art metallized film, electrolytics and multilayer ceramic capacitors, the NanolamTM capacitors have  up to 10X energy density and 10X specific energy, with excellent capacitance stability with temperature and bias.  The primary objective of the proposed Phase II program is to complete the development of both DC and AC NanolamTM capacitors, specifically designed for NASA dynamic energy conversion ACUs, and to supply parts to NASA technical personnel for evaluation.  Specific tasks include the development of larger 4.4mF/50V capacitors, bus bar design to handle high ripple currents, packaging and producing AC NanolamTM capacitors with a two layer electrode system, to maximize life in environments that can induce electrode corrosion.

          
          
     
Potential NASA Applications (Limit 1500 characters, approximately 150 words):

There are multiple NASA applications for the NanolamTM capacitors, including power processing units (PPUs) for Hall thruster propulsion units, inverters for roll-out photovoltaic arrays and advance controller units for dynamic power conversion sources, such as Stirling engines. 

          
          
     
Potential Non-NASA Applications (Limit 1500 characters, approximately 150 words):

The largest NanoLamTM market is DC-link capacitors for inverters used in hybrid vehicles, plug-in-hybrid, all electric, and automotive battery chargers. Other applications include inverters for aerospace applications, PV inverters, LED lighting, wind turbine, rail traction, un-manned aerial vehicles, pulsed power applications and industrial power supplies.

          
          
     
Duration:     24
          
          

Form Generated on 05/13/2021 14:48:02