Modular multilevel converter (MMC) based resonant high voltage multiplier

This paper addresses the limitation of current technologies in the interconnection between medium-voltage (MV) DC and high-voltage (HV) DC grids. One transformerless approach is proposed to achieve bidirectional high power transfer and high step up/down ratio, which can be configured to interface wi...

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Bibliographic Details
Published in2015 IEEE Energy Conversion Congress and Exposition (ECCE) pp. 5016 - 5020
Main Authors Liming Liu, Bala, Sandeep
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2015
Subjects
dc/dc converter
HVDC transmission
Impedance
Load flow
MMC
Resonant
Resonant frequency
RLC circuits
Simulation
Voltage control
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Summary:This paper addresses the limitation of current technologies in the interconnection between medium-voltage (MV) DC and high-voltage (HV) DC grids. One transformerless approach is proposed to achieve bidirectional high power transfer and high step up/down ratio, which can be configured to interface with different grids connection. The proposed technology integrates modular multilevel converter (MMC) modules into resonant dc/dc converters. Power is transferred through both DC and AC paths. Equivalent circuit is developed and power flow is analyzed to clarify the system operation. Simulation results are presented to verify the validity of the proposed approach.
ISSN:2329-3721
2329-3748
DOI:10.1109/ECCE.2015.7310367