Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/152446
Title: OPTIMAL MODULATION AND CONTROL OF VOLTAGE FED DUAL ACTIVE BRIDGE BIDIRECTIONAL DC-DC CONVERTER
Authors: SHIVA SHANKARANARAYANAN MUTHURAJ
ORCID iD:   orcid.org/0000-0002-0407-2461
Keywords: Bidirectional DC-DC Converter, Dual Active Bridge (DAB), Phase Shift Control, Soft-Switching, High Frequency Transformer, Optimal Modulation
Issue Date: 20-Aug-2018
Citation: SHIVA SHANKARANARAYANAN MUTHURAJ (2018-08-20). OPTIMAL MODULATION AND CONTROL OF VOLTAGE FED DUAL ACTIVE BRIDGE BIDIRECTIONAL DC-DC CONVERTER. ScholarBank@NUS Repository.
Abstract: The demand for energy storage systems are increasing in many industries (automation, renewable energy etc.), requiring power electronic system interface. The Voltage Fed - Dual Active Bridge (VF-DAB) converter is the most suitable topology for such applications. However, Single Phase Shift (SPS) controlled VF-DAB converters suffer from transient DC bias effect and poor steady-state performance at wide load and voltage variations. A modified SPS control scheme is proposed in order to mitigate the effects of transient DC bias. Similarly, a variable transformer turns ratio based method for a single module and phase shedding/adding method for parallel operated SPS controlled VF-DAB are proposed to improve the steady-state performance. Although both solutions improve the steady-state performance, they still do not provide complete soft-switching. A solution based on use of passive auxiliary inductors is proposed to achieve complete soft-switching in the entire operating range of Triple Phase Shift controlled VF-DAB converters
URI: http://scholarbank.nus.edu.sg/handle/10635/152446
Appears in Collections:Ph.D Theses (Open)

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