Title :
Research on the medical Nd:YAG laser power system using LLC resonant converter
Author :
Tao Zheng ; Hee-Jee Kim
Author_Institution :
Dept. of Electr. Eng., Pusan Nat. Univ., Busan, South Korea
Abstract :
In this paper, we designed a LLC resonant converter as the main power supply of the medical Nd:YAG laser. First harmonic approximation (FHA) is used to model the LLC resonant converter. FHA equivalent circuit model and the transfer function of the LLC converter is proposed. Soft start technology is used to suppress the surge current. The laser output is simulated and experimented, the pulse laser energy is up to 2.5J, and the pulse per second (PPS) can be adjusted from 6 to 18. The power system is verified stable and reliable by simulation and experiment.
Keywords :
equivalent circuits; laser applications in medicine; neodymium; power system protection; power system reliability; resonant power convertors; solid lasers; surge protection; transfer functions; (PPS); FHA equivalent circuit; LLC resonant converter; YAG:Nd; first harmonic approximation; medical laser power system; pulse per second; soft start technology; surge current suppression; transfer function; Discharges (electric); Integrated circuit modeling; Power supplies; Surges; Switches; Voltage measurement; Zero voltage switching; FHA; LLC resonant converter; Nd:YAG laser; PPS; Soft start; ZVS;
Conference_Titel :
Advanced Intelligent Mechatronics (AIM), 2015 IEEE International Conference on
DOI :
10.1109/AIM.2015.7222789
