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Title: High voltage power supply with modular series resonant inverters

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.
Inventors:
 [1];  [1]
  1. (Livermore, CA)
Issue Date:
OSTI Identifier:
869992
Assignee:
United States Department of Energy (Washington, DC) LLNL
Patent Number(s):
US 5434770
Contract Number:
W-7405-ENG-48
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
voltage; power; supply; modular; series; resonant; inverters; relatively; compact; current; laser; utilizes; plurality; modules; containing; half; bridge; pair; reverse; conducting; thyristors; incorporated; inverter; module; sequentially; activated; phases; 360; degree; apart; selective; activation; allows; precise; output; control; reducing; ripple; improving; efficiency; transformer; cooling; manifold; actively; circulating; coolant; water; cool; core; selected; circuit; elements; conductors; connecting; forming; various; components; comprise; hollow; electrically; conductive; tubes; copper; circulates; remove; heat; lines; desired; electrical; isolation; breaks; comprised; insulating; material; nylon; provide; insulation; fluid; voltage power; circuit component; remove heat; insulating material; electrically conductive; power supply; various components; circuit components; electrical isolation; circuit elements; series resonant; circuit element; fluid circuit; reverse conducting; modules containing; transformer core; bridge inverters; laser utilizes; conductive tubes; current power; improving efficiency; various component; conductive lines; conducting thyristors; conductive tube; /363/