Reliability improvement in parallel connected converter systems

The authors present methods and analyses for improving the reliability of a parallel-connected converter system under master-slave control with maximum current limit. The proposed schemes can identify the defective converters and take appropriate action to ensure the normal operation of the system. In addition, the control techniques used are able to determine the necessary number of active converters for any load condition. Consequently, the degree of redundancy increases significantly and the overall system reliability and performance are improved.<
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