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High voltage power supply with modular series resonant inverters

Patent ·
OSTI ID:869992
 [1];  [1]
  1. Livermore, CA
+ Show Author Affiliations

A relatively small and compact high voltage, high current power supply for a laser utilizes a plurality of modules containing series resonant half bridge inverters. A pair of reverse conducting thyristors are incorporated in each series resonant inverter module such that the series resonant inverter modules are sequentially activated in phases 360.degree./n apart, where n=number of modules for n>2. Selective activation of the modules allows precise output control reducing ripple and improving efficiency. Each series resonant half bridge inverter module includes a transformer which has a cooling manifold for actively circulating a coolant such as water, to cool the transformer core as well as selected circuit elements. Conductors connecting and forming various circuit components comprise hollow, electrically conductive tubes such as copper. Coolant circulates through the tubes to remove heat. The conductive tubes act as electrically conductive lines for connecting various components of the power supply. Where it is desired to make electrical isolation breaks, tubes comprised of insulating material such as nylon are used to provide insulation and continue the fluid circuit.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
United States Department of Energy (Washington, DC)
Patent Number(s):
US 5434770
OSTI ID:
869992
Country of Publication:
United States
Language:
English

References (6)

The use of saturable reactors as discharge devices for pulse generators journal May 1951
High-power pulse generation using semiconductors and magnetic cores
  • Lassiter, Edward M.; Johannessen, Paul R.; Spencer, Richard H.
  • Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, Vol. 79, Issue 5 https://doi.org/10.1109/TCE.1960.6367301
journal January 1960
High di/dt switching with thyristors conference January 1988
Power semiconductor devices for sub-microsecond laser pulse generation conference January 1988
Reliable, High Repetition Rate Thyratron Grid Driver Used With A Magnetic Modulator conference January 1991
Basic principles governing the design of magnetic switches report November 1980

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