Journal of Engineering Research

Power electronic converters play a crucial role in modern energy conversion systems and are widely used in fields such as wind energy, solar energy, and electric vehicles. Under extreme working conditions, such as high temperature, strong electromagnetic interference, and large current fluctuations, the reliability of converters will significantly decrease, which may lead to equipment failures or performance degradation. Aiming at the reliability issues of power electronic converters under extreme working conditions, this paper analyzes their failure modes and proposes an improved design scheme. By optimizing the selection of components, heat dissipation design, and circuit protection measures, the reliability of the converter under extreme working conditions is effectively improved. Experiments verify the effectiveness of the proposed scheme, and the results show that the improved design has higher reliability in practical applications.

Power electronic converter; Reliability analysis; Extreme working conditions; Design improvement; Failure mode