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Sliding-mode control design of parallel-connected switching converters for modular transformerless DC-AC step-up conversion
This paper presents the design of a sliding-mode control of parallel-connected boost-buck inverter modules for a modular transformerless DC-AC step-up conversion. Two sets of sliding control laws are proposed. The first one is based on the master-slave strategy to control the buck stages for a DC-AC...
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Main Authors: | , , , , |
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Format: | Conference Proceeding |
Language: | English |
Subjects: | |
Online Access: | Request full text |
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Summary: | This paper presents the design of a sliding-mode control of parallel-connected boost-buck inverter modules for a modular transformerless DC-AC step-up conversion. Two sets of sliding control laws are proposed. The first one is based on the master-slave strategy to control the buck stages for a DC-AC conversion, ensuring at the same time an output voltage regulation and a proper current sharing among the inverter modules. The second set is devoted to the control of the boost stages in order to perform a step-up DC-DC conversion, ensuring simultaneously the buck stages proper operation by preserving their sliding domains. Experimental results carried out on two parallel-connected boost-buck inverter modules are presented to validate the proposed design. |
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ISSN: | 0271-4302 2158-1525 |
DOI: | 10.1109/ISCAS.2005.1465275 |