Comprehensive Review on Fault Tolerance Capability of Power Converters for DC Microgrid

The application of DC microgrid is increasing due to the elevation of renewable energy (especially solar energy) practice. Increasing reliance on the DC microgrid seeks more reliable or faultless operation for impeccable control over the DC grids. The concept of reliability enhancement is at its verge since none of the electronic devices can be operated forever. Therefore, the idea of fault tolerance in the presence of redundancy has emerged. This paper proposes the review on fault phenomenon and reliability of the power electronics converters from various aspects such as performance, application, efficiency, etc. Different fault-tolerant schemes reported in the literature have been critically reviewed, compared, and explained in detail to have insight into the prominent solutions. This paper aims a bridge between the inference of reliable and fault-tolerant ability of power electronic converters for DC microgrid`s application. The ability to diagnose and intimate such faults in real-time has also been discussed in addition to various fault-tolerant converter topologies.