Design Of A Three-Phase, 15-Kilovolt-Ampere Static Inverter For.pdf

DESIGN OF A THREE-PHASE,
15-KILOVOLT-AMPERE STATIC INVERTER
FOR MOTOK-STARTING A BRAYTON
SPACE POWER SYSTEM
I by Robert J. Frye and Arthur G. Birchenough
Lewis Research Center
Cleueland, Ohio 44135
r
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON, D. C. FEBRUARY 1972
1
TECH LIBRARY KAFB, NM
OL33204
~~ 3.
1. Report No. 2. Government Accession No. Recipient's Catalog No.
NASA TN D-6602 I I
4. Title and Subtitle DESIGN OF A THREE-PHASE. 15-mLOVOLT- I 5. Report Date
February 1972
AMPERE STATIC INVERTER FOR MOTOR-STARTING A I
6.
BRAYTON SPACE POWER SYSTEM I anization Code
7. Author(s) 8. anization Report No.
E- 6622
Robert J. Frye and Arthur G. Birchenough
10. Work Unit No.
9. anization Name and Address 112-27
Lewis Research Center
11. Contract or Grant No.
National Aeronautics and Space Administration
Cleveland, Ohio 44135 13. Type of Report and Period Covered
2. Sponsoring Agency Name and Address Technical Note
National Aeronautics and Space Administration 14. Sponsoring Agency Code
Washington, D. C. 20546
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6. Abstract
The design of a three-phase, 400-Hz, 15-kVA static inverter for motor-starting the 2- to
15-kWe Brayton electrical space power system is described. The inverter operates from a
nominal 56-V dc source to provide a 28-V, rms, quasi-square-wave output. The inverter is
capable of supplying a 200-A peak current. Integrated circuitry is used to generate the three-
phase, 400-Hz reference signals. Performance data for a drive stage that improves switching
speed and provides efficient operation over a range of output current and drive supply voltage
are presented. A transformerless, transistor output stage is used.
7. Key Words (Suggested by Author(s)) 18. Distribution Statement
Static inverter
Unclassified - unlimited
Brayton cycle
Motor- starting
19. Security Classif. (of this report) 20. Security Classif. (of this page)