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

fYear

2015

Firstpage

1694

Lastpage

1698

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Intelligent Mechatronics (AIM), 2015 IEEE International Conference on

Type

conf

DOI

10.1109/AIM.2015.7222789

Filename

7222789