| Title |
Characteristics of New PWM High Frequency Inverter Applied to Induction Heating |
| Authors |
유의정(Yeoi-Joung Ryu) ; 이상욱(Sang-Wook Lee) ; 문상필(Sang-Pil Mun) ; 박한석(Han-Seok Park) |
| DOI |
http://doi.org/10.5370/KIEEP.2018.67.2.063 |
| Keywords |
Induction heating ; Soft switching ; Zero current soft switching ; Bridge package type resonant AC link snubber ; Bi-directional bwitch type resonant AC link snubber |
| Abstract |
In this paper, the operation principle of a bi-directional switch type resonant AC link snubber circuit was described, together with the practical design procedure, which employs in the proposed power module bridge package type resonant AC link snubber. The novel prototype of power module bridge package type resonant AC link snubber-assisted voltage type sinewave soft switching PWM inverter using IGBT power module was demonstrated herein. It was verified that both the auxiliary power switches in this resonant AC link snubber circuit and the main power switches commutate under the condition of soft switching commutation principle. In addition, the power losses of the new soft switching inverter treated here were analyzed by implementing the experimental data of the IGBT and diode v-i characteristics in addition to switching power loss characteristics into our original computer simulation software developed by the authors. Then, the voltage type sinewave soft switching PWM inverter was high efficiency than that of hard switching PWM inverter, along with performance operation waveforms. In the future, the comparative feasibility study of power module bridge type resonant AC link snubber and its related soft switching inverter in addition to the other types resonant snubber assisted soft switching inverter should be done from a practical point of view. |