Title :
A 17 kW series-resonant converter for a CO2 laser gas discharge load
Author :
Donahue, J.A. ; Neech, Alan M.
Author_Institution :
Coherent Gen. Inc., Sturbridge, MA, USA
fDate :
29 Jun-3 Jul 1992
Abstract :
A system comprising a combination of 17 kW series-resonant DC-DC converters is used to power a CO2 laser gas-discharge load in both pulsed and continuous modes. The converters use ASCRs for switching at up to 16.7 kHz with natural commutation yielding a simple topology. Commutation problems encountered are discussed, and a solution is presented. A multiloop control system allowing programmable pulse-shaping with a leading-edge current boost of over 5 to 1 and linear control of pulse-plateau current is described
Keywords :
commutation; electric current control; gas lasers; laser accessories; power convertors; switching; thyristor applications; 17 kW; CO2 laser; continuous mode; gas discharge load; leading-edge current boost; linear control; multiloop control system; natural commutation; programmable pulse-shaping; pulse-plateau current; pulsed mode; series-resonant converter; switching; Bridge circuits; DC-DC power converters; Discharges; Gas lasers; Inductance; Laser feedback; Rectifiers; Resonance; Transformers; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1992. PESC '92 Record., 23rd Annual IEEE
Conference_Location :
Toledo
Print_ISBN :
0-7803-0695-3
DOI :
10.1109/PESC.1992.254759
