3 March 1995 High-regulation, capacitor-charging power supplies
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Abstract
Advanced applications in the impulse radar, RF accelerator and laser industries require a high voltage capacitor charging power supply capable of voltage regulation <EQ+/- 0.05% for load capacitances on the order of 100 nF. This regulation may be necessary at rep-rates up to 1 kHz. This paper discusses several topologies considered and the performance trade-offs of both the power converter when combined with the typical control scheme. Based on measurement criteria such as efficiency, size, weight, cost and reliability for given component stresses, the series resonant power converter provides the optimum enabling technology to maximize the value of the high voltage capacitor charging power supply. However, the series resonant topology when combined with the classical pulse rate modulation (PRM) control scheme is limited in achieving a high degree of regulation for small value capacitive loads. This paper discusses a series resonant power supply combined with a patented control scheme which has demonstrated regulation <EQ+/- 0.05% for capacitive loads >= 20 nF. This regulation has been demonstrated over a product family having output powers from 2 to 10 kJ/s and output voltage up to 50 kV. The power converter utilizes IGBT switches and a transformer rectifier high voltage topology.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ed Strickland, F. Cathell, Kevin Harris, D. Bilak, J. Jichetti, "High-regulation, capacitor-charging power supplies", Proc. SPIE 2374, Novel Applications of Lasers and Pulsed Power, (3 March 1995); doi: 10.1117/12.204996; https://doi.org/10.1117/12.204996
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