MMC (Modular Multilevel Converter) sub-module fault tolerance method for sharing inherent sub-module and power electronic device
The invention discloses an MMC sub-module fault tolerance method for sharing inherent sub-modules and a power electronic device, and belongs to the field of MMC fault tolerance control, and the method comprises the steps: when the number of MMC sub-modules to be input in a first bridge arm is greate...
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Main Authors | , , , |
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Format | Patent |
Language | Chinese English |
Published |
01.03.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses an MMC sub-module fault tolerance method for sharing inherent sub-modules and a power electronic device, and belongs to the field of MMC fault tolerance control, and the method comprises the steps: when the number of MMC sub-modules to be input in a first bridge arm is greater than the maximum input number of the MMC sub-modules, according to the missing value of the MMC sub-modules in the first bridge arm, determining the number of the MMC sub-modules to be input in the first bridge arm; the first optimal number of MMC compensation sub-modules needed by a first bridge arm of the A phase, the B phase and the C phase is calculated, the missing value is the difference value between the number of the MMC sub-modules to be input and the maximum input number of the MMC sub-modules, and the first bridge arm is one of an upper bridge arm and a lower bridge arm; based on the first optimal number, redundant MMC sub-modules in second bridge arms of the A phase, the B phase and the C phase are us |
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Bibliography: | Application Number: CN202111373660 |