Pulsed-power applications

Silicon Carbide Technology and Power Electronics Applications 

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Lithium Iron Sulfide (High Temperature). High-temperature molten salt Li—Al/LiCl— KCl/FeS - cells are known for their high energy density and superior safety. At one point they were being actively pursued for electric vehicle and pulse-power applications. Historically, boron nitride (BN) cloth or felt has been used as the separator in flooded-electrolyte cells, while MgO pressed-powder plaques have been used in starved-electrolyte cells. 

In pulse-power applications, the thyristor is required to supply energy to the load in a very short period of time, which requires that it provide extremely high-current slew rates. During turn-on, excess carrier density increases near the gate area and then spreads throughout the device. As the excess carriers spread, the anode-to-... 

Another parameter that must be taken into account when operating devices in pulsed-power applications is the action, defined as l t, where t is the width of the current pulse. The life (N) of the switch is the number of times the device will deliver power to the load before failure and is also an important parameter used to determine the reliability of the pulse-power system. Switch failure is usually related to mechanical factures caused by thermal stresses due to power dissipation in the device at turn-on. Life is predicted using the empirical formula... 

Jones PB, Lakeman JB, Mepsted GO, Moore JM (1999) A hybrid power source for pulse power applications. J Power Sources 80 242-247. doi 10.1016/S0378-7753(99)00074-9... 

Polypropylene Lower dissipation factor, moisture absorption, and power factor, with higher dielectric strength than polyester and polycarbonate self-healing possible after minor breakdown Susceptible to damage from over or reverse potential for pulse power applications... 

These solid-state cells are best suited for high-rate pulse-power applications. Although no reliable data are available for these cells, the author can predict reasonably high reliability, especially at operating temperatures as high as 300°C. 

SO2 3.1 0.33 220 Good for pulse power applications, safety issues... 

For greater efficiencies in ac and dc power generation and transmission, and for larger energies in such pulsed power applications as... 

McHardy, J., in Proc. U. S. Army Workshop on Capacitors and Batteries for Pulse Power Applications, Laboratory of the U.S. Army, LABCOM, Asbury Park, NJ, Nov. 17-18 (1987)... 

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