| Title |
The Characteristics Analysis of New Dc 48[Ⅴ] Telecommunication Power System using Forward Type three Phase Rectifier |
| Keywords |
Telecommunication ; IEC61000-3-2 ; High-Frequency isolated |
| Abstract |
This paper proposed power system for new DC 48[Ⅴ] telecommunication using forward three-phase PWM rectifier power factor and efficiency for improvement of ripple voltage. Proposed power system for DC 48[Ⅴ] telecommunication that consists of power conversion devices including switch, inductor and condenser were made between each line, in power inverter device of each switch control turn-on in period of continuity time control to get power factor “1” of sine wave current and on-off of switch lessens peak current that was happened and got conversion efficiency 92.1[%] composing in PWM rectifier of forward form instead of general PWM rectifier. Also, harmonic input regulation value(IEC61000-3-2 Class-As) satisfy input current and reduce ripple factor of output voltage in state that distortion of three-phase supply is overlapped each other. |