JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2017, Vol. 47 ›› Issue (4): 37-42.doi: 10.6040/j.issn.1672-3961.0.2017.101

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A soft starting method for the isolated DC/DC converter in DC distribution systems

PAN Yiwei, YUAN Shuai, CHEN Alian, ZHANG Chenghui*   

  1. School of Control Science and Engineering, Shandong University, Jinan 250061, Shandong, China
  • Received:2017-01-03 Online:2017-08-20 Published:2017-01-03

Abstract: To solve over current problem of the isolated DC/DC converter that commonly applied in DC distribution systems, a novel simple soft starting method was proposed. During the starting time, the dutycycle of the input side square wave voltage gradually changed from 0 to 0.5, while the DC voltage ramped from 0 to the final set value at the same time by phase shift control. By applying these two methods, current overshooting and capacitor voltage oscillation could be effectively suppressed. The system had a strong anti-disturbance capacity and do not require complex mode switching procedure as conventional soft starting method. Simulation results were provided to validate the effectiveness of the proposed soft starting method.

Key words: DC/DC converter, DC distribution system, soft start, phase shift control

CLC Number: 

  • TM46
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