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7 results on '"Brieda, L."'

1. Outgassing Characterization of Rod Heaters Used for GOES-R Thermal Vacuum Testing

Author

Brieda, L, Gordon, T, Studer, R, Pfeiffer, R, Bush, J, and Van Loon, S

Subjects
Ground Support Systems And Facilities (Space)
Abstract

This talk summarizes experimental effort to characterize the outgassing rate of rod heaters (Watrods) used for GOES-R thermal vacuum testing. QCM data obtained with unbaked rods indicated that the outgassing exceeded the allowable budget. We then pre-baked the watrods for 16 hours at ambient pressure and determined that pre-baking reduced the amount of outgassed material by a factor of 4.

Published
2015

6. Book reviews.

Author

Shea, John J., Sundareswaran, K., Poljak, D., Cvetkovic, M., Islam, M. M., He, J., Birke, K. P., Vertigan, G., Brieda, L., and Wypych, G.

Subjects
FLEXIBLE AC transmission systems, VARIABLE speed drives, UNINTERRUPTIBLE power supply, SEMICONDUCTOR switches, ALTERNATING current electric motors
Abstract

Power electronic drives consist of semiconductor switches arranged in a way such that the circuit can be controlled with certain gate pulse patterns to produce the desired output power waveforms. These circuits can be used to convert DC-DC, AC-DC, DC-AC, or AC-AC. Typical applications include variable speed drives for motors, both AC and DC motors (VSD), uninterruptible power supplies (UPS), Flexible AC transmission systems (FACTS), voltage compensators, and photovoltaic inverters. Topologies for these converters can be separated into two distinct categories: voltage source inverters and current source inverters. Voltage source inverters (VSIs) are named so because the independently controlled output is a voltage waveform. Similarly, current source inverters (CSIs) are distinct in that the controlled AC output is a current waveform. [ABSTRACT FROM AUTHOR]

Published
2020
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