| Title |
New Dead Time Compensation Method in Voltage-Fed PWM Inverter |
| Authors |
Ho-Seon Ryu ; Bong-Suck Kim ; Joo-Hyun Lee ; Ick-Hun Lim ; Seon-Hwan Hwang ; Jang-Mok Kim |
| Keywords |
Voltage-fed PWM Inverter; Dead Time; Voltage Distortion; Harmonics; Signal of the integrator output of the d-axis current regulator |
| Abstract |
Conventional phase shift full bridge (PSFB) converter has serious voltage oscillation problem across the secondary rectifier diodes, which would require the dissipate snubber circuit, thus degrades the overall efficiency. To overcome this problem, a new simple voltage oscillation reduction technique (VORT) which effectively reduce the voltage oscillation of the secondary rectifier diodes for phase shift full bridge converter is proposed. Therefore, no dissipate snubber for rectifier diodes is needed. In addition, since it has wide zero voltage switching (ZVS) range, high efficiency can be achieved. Operational principle, analysis of voltage oscillation, and design consideration are presented compare with that of the conventional PSFB converter. To confirm the validity of the proposed VORT, experimental results from a 420W prototype are presented. |