Browsing by Subject "compensated pulsed alternator"
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Item A Study of Operating Modes for Compulsator Based EM Launcher Systems(IEEE, 1997-01) Pratap, S.B.; Kajs, J.P.; Walls, W.A.; Weldon, W.F.; Kitzmiller, J.R.The compensated pulsed alternator (compulsator) is a versatile power supply capable of interfacing with the electromagnetic launcher in various ways. The method that has been explored at length with several systems is the single phase option. Several variants of this option, some using advanced pulse shaping techniques, have been discussed in prior publications. Besides this basic single pulse method of operating there are several other methods each with its pros and cons. The multiphase option is discussed in this paper. Within the broad class of multi-phase systems there are further sub-classes, namely alternating current drive and unidirectional current drives. Thus the branching of these operating modes gives rise to a variety of operating modes. Each one of these operating modes is described and simulation results are presentedItem Testing of an Air Core Compulsator Driven 0.60 Caliber Railgun System(IEEE, 1995-01) Fuller, R.L.; Kitzmiller, J.R.; Thelen, R.F.The Center for Electromechanics at The University of Texas at Austin (CEM-UT) is testing a laboratory based, small caliber, electromagnetic launcher and compensated pulsed alternator power supply. The objective of the program is to develop a compact, lightweight test bed capable of accelerating a salvo of three, 32-g masses to 2 km/s at a rate of 10 Hz. The 0.60 caliber, augmented railgun is powered by an 850 kg self-excited, air-core compulsator which develops 674 MW peak power delivered through a solid state, silicon controlled rectifier closing switch. The incremental test plan has completed testing of the system at the 16000 rpm level with current plans to proceed to 21000 rpm. System test data including self-excitation experiments are presented.