Experimental Results from a 2 kW Brayton Power Conversion Unit

Hervol, David; Mason, Lee S.; Birchenough, A. G.

doi:10.1063/1.1541347

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…This is accomplished by applying a parasitic load to the alternator output to maintain total load as required for the desired output voltage and/or speed. This type of parasitic loading was also used very successfully on a 2 kW Brayton cycle power system (Hervol, Mason andBirchenough, 2003 andBirchenough, 2006). The User Loads are downstream of the high voltage transmission simulator, and are connected directly to the main distribution bus with a 400VAC line-to-line 3 Phase, 1750Hz feed.…”

Section: Mpdu Alternator Controller Plr and User Loadsmentioning

confidence: 99%

Test Results from a Simulated High Voltage Lunar Power Transmission Line

Birchenough

Hervol

2008

AIP Conference Proceedings

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Abstract. The Alternator Test Unit (ATU) in the Lunar Power System Facility (LPSF) located at the NASA Glenn Research Center (GRC) in Cleveland, OH was modified to simulate high voltage transmission capability. The testbed simulated a 1 km transmission cable length from the ATU to the LPSF using resistors and inductors installed between the distribution transformers. Power factor correction circuitry was used to compensate for the reactance of the distribution system to improve the overall power factor. This test demonstrated that a permanent magnet alternator can successfully provide high frequency AC power to a lunar facility located at a distance.

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Section: Mpdu Alternator Controller Plr and User Loadsmentioning

confidence: 99%

Test Results from a Simulated High Voltage Lunar Power Transmission Line

Birchenough

Hervol

2008

AIP Conference Proceedings

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“…This technique of speed and voltage control was first developed for use with the 2 kW BPCU (Hervol et al, 2003). The alternator control function is based on applying a parasitic load to the alternator output to maintain total load as required for the desired output voltage and/or speed.…”

Section: Alternator Controller and Plrmentioning

confidence: 99%

Operational Results from a High Power Alternator Test Bed

Birchenough¹,

Hervol²

2007

AIP Conference Proceedings

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“…It was used in previous solar dynamic technology efforts (Shaltens and Mason, 1999) and was modified to its present configuration by replacing the solar receiver with an electrical resistance heater (Hervol, Mason, and Birchenough, 2003). The BPCU was the first closed Brayton cycle to be coupled with an ion propulsion system (Hervol et al, 2004) and was used to examine mechanical dynamic characteristics and responses (Ludwiczak et al, 2005).…”

Section: Introductionmentioning

confidence: 99%