Improvements in or relating to chain link modules for voltage source converters
In the field of chain link modules for voltage source converters, there is a need for an improved chain link module. A chain link module for connection in series with other chain link modules to form a chain link converter that is selectively operable to provide a step variable voltage source within...
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Main Authors | , , , |
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Format | Patent |
Language | Chinese English |
Published |
27.06.2023
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Subjects | |
Online Access | Get full text |
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Summary: | In the field of chain link modules for voltage source converters, there is a need for an improved chain link module. A chain link module for connection in series with other chain link modules to form a chain link converter that is selectively operable to provide a step variable voltage source within a voltage source converter, the chain link module includes at least one pair of series connected switching elements connected in parallel with a plurality of series connected energy storage devices. Each energy storage device has an auxiliary power supply unit connected in parallel therewith to obtain energy therefrom for supply to an auxiliary chain link module control circuit. The chain link module also includes a modulation controller interconnected between each auxiliary power supply unit and the auxiliary chain link module control circuit. The modulation controller is configured to modulate a proportion of energy supplied by each auxiliary power supply unit to the auxiliary chain link module control circuit. |
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Bibliography: | Application Number: CN202211611823 |