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http://hdl.handle.net/11375/28456
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DC Field | Value | Language |
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dc.contributor.advisor | Bauman, Jennifer | - |
dc.contributor.author | Schulz, Gunnar | - |
dc.date.accessioned | 2023-04-27T13:28:11Z | - |
dc.date.available | 2023-04-27T13:28:11Z | - |
dc.date.issued | 2023-06 | - |
dc.identifier.uri | http://hdl.handle.net/11375/28456 | - |
dc.description.abstract | The duty cycle control (DCC) modulation scheme for the three-phase dual-active-bridge (3p-DAB) DC-DC converter is a promising three degree-of-freedom modulation scheme which can extend the converter’s soft-switching range and reduce conduction losses under partial loading and wide voltage variations. However, the prior suggested methods to implement DCC in 3p-DABs have drawbacks such as requiring a multi-frequency approximation and offline optimization process or achieving less than optimal efficiency. To overcome these challenges, this research first proposes an optimal DCC modulation strategy (OMS) for the 3p-DAB based on a novel piece-wise time-domain analysis (TDA) and optimization process that obtains the optimal control parameters for minimum RMS phase current. Secondly, this research proposes a novel closed-form minimum current stress optimization (MCSO) DCC scheme based on the theoretical findings of the TDA optimization. The MCSO reduces the transformer phase currents and extends soft-switching operation under partial loading and wide voltage variations. Experimental results via open-loop testing show that the proposed closed-form MCSO DCC scheme has virtually identical efficiency as the OMS, making this the first research to provide a closed-form DCC modulation scheme for a 3p-DAB that achieves efficiency results equivalent to a fully-optimized offline scheme, but without the drawbacks of the offline optimization process. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | DC-DC converter | en_US |
dc.subject | modulation | en_US |
dc.subject | optimal control | en_US |
dc.title | Time-Domain Analysis and Optimization of a Three-Phase Dual-Active-Bridge Converter With Variable Duty-Cycle Modulation | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | Electrical Engineering | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Applied Science (MASc) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Time-Domain Analysis and Optimization of a Three-Phase Dual-Active-Bridge Converter With Variable Duty-Cycle Modulation.pdf | 3.45 MB | Adobe PDF | View/Open |
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