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This paper presents a new single-stage AC/DC step-up soft-switched converter for medium voltage (MV) DC grid for wind energy systems. To achieve close-to-unity power factor, stepping up the voltage and reduce the number of conversion stages, a three-phase boost AC/DC rectifier and a high frequency step-up resonant converter with high gain rectifier modules are combined into a single-stage step-up...
Conventional offshore wind farms with medium voltage (MV) AC grid require low frequency step-up transformer to boost the output voltage of the wind turbine. In order to eliminate the bulky MV step-up transformers in MVAC grid, the use of a MV step-up DC/DC converter in MVDC grid is an attractive alternative. In this paper, two modular MV step-up DC/DC converter topologies that combine multiple modules...
Conventional offshore wind farms with AC power transmission require multiple line frequency step-up transformers to boost the output voltage of the wind turbine generator for High Voltage AC (HVAC) transmission. In order to eliminate the bulky AC transformers, DC power transmission has been suggested in literatures for wind farms by utilizing medium voltage step-up DC/DC converter to boost the output...
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