Mechanism of Rectified Output Voltage Spike in Isolated Converter Under Wide Input Voltage

  • Chunhui Miao
  • Huiqing Du
  • Fei Xiao
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 482)


There exists high rectified output voltage spike in isolated transformer’s secondary, especially for the high frequency link auxiliary inverters under wide input voltage. It will lead to increased voltage stress and loss of switching devices, impeding the improvement of system’s reliable operation and conversion efficiency. In order to solve the root causes of rectified output voltage spike, the mathematical model of rectifier output voltage is established. Based on the model, the mechanism of voltage spike is explored, deriving two main reasons: one is the wide input voltage, and the other is the resonance between the transformer leakage and the rectifier diode junction capacitor. Consequently, it is more pertinent to address the problem and improve the system’s reliability.


Voltage spike Wide input voltage High frequency link Isolated converter 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Naval University of Engineering, PLAQiaokou District, WuhanChina
  2. 2.System Engineering Institute, China State Shipbuilding CorporationHaidianChina

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