Publications de Tianyu Wei | EPFL Graph Search

Second Harmonic Induced Resonant Modes of Fixed-Frequency Operated LLC Converters

Drazen Dujic, Tianyu Wei, Andrea Cervone

The fixed-frequency operated LLC converters can provide a fixed voltage gain with galvanic isolation between the input and output. However, when applied in two-stage AC/DC converters, the equivalent current that flows through the LLC converter, which corre ...

Institute of Electrical and Electronics Engineers (IEEE)2025

Active Power Decoupling for Single-Phase Input-Series-Output-Parallel Solid-State Transformers

Drazen Dujic, Tianyu Wei, Andrea Cervone

Solid-state transformers with input-series outputparallel structures are being considered for a variety of applications requiring MVAC to LVDC conversion. Due to the singlephase AC/DC conversion at the input side, all floating cells of the solid-state tran ...

2024

Stability Analysis of Second-Order Harmonic Active Filters for Input-Series/Output- Parallel Solid State Transformers

Drazen Dujic, Tianyu Wei, Andrea Cervone

Solid-State Transformers with Input-Series/Output- Parallel configuration offer a convenient solution for AC/DC power conversion, thanks to their modularity, scalability and flexibility. However, as known, they are affected by a second-order harmonic rippl ...

2024

Stability Analysis of Input-Series/Output-Parallel Solid-State Transformers Equipped with Second-Order Harmonic Active Power Filters

Drazen Dujic, Tianyu Wei, Andrea Cervone

Solid-State Transformers with Input-Series/Output-Parallel configuration offer a convenient solution for AC/DC conversion due to their scalability and modularity. In this configuration, each module experiences a second-order harmonic ripple caused by local ...

2024

Second Harmonic Ripple Voltage Mitigation for Single-Phase Solid-State Transformers

Tianyu Wei

Solid-state transformer (SST) is a recent evolution of power-electronics-based conversion technology that has the potential to revolutionize many fields. It fulfills all the functionalities of traditional low-frequency transformers and enables additional c ...

EPFL2024

Optimization of DC-Link Capacitance for Single-Phase ISOP SST Considering the Second Harmonic Pulsating Power in LLC Converter

Drazen Dujic, Tianyu Wei, Andrea Cervone

2024

Ripple Voltage and Loss Reduction of Single-Phase ISOP SST by Eliminating the Second Harmonic Current in LLC Converters

Drazen Dujic, Tianyu Wei, Andrea Cervone

In two-stage solid-state transformers with input-series output-parallel structure, the LLC converter operating at a fixed switching frequency is a common choice for the isolated DC/DC conversion stage because it can provide a high efficiency and a fixed vo ...

2024

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Second Harmonic Induced Resonant Modes of Fixed-Frequency Operated LLC Converters

Active Power Decoupling for Single-Phase Input-Series-Output-Parallel Solid-State Transformers

Stability Analysis of Second-Order Harmonic Active Filters for Input-Series/Output- Parallel Solid State Transformers

Stability Analysis of Input-Series/Output-Parallel Solid-State Transformers Equipped with Second-Order Harmonic Active Power Filters

Second Harmonic Ripple Voltage Mitigation for Single-Phase Solid-State Transformers

Optimization of DC-Link Capacitance for Single-Phase ISOP SST Considering the Second Harmonic Pulsating Power in LLC Converter

Ripple Voltage and Loss Reduction of Single-Phase ISOP SST by Eliminating the Second Harmonic Current in LLC Converters

Coupling Dynamics of Second-Order Harmonic Active Filters in Single-Phase Input- Series/Output-Parallel AC-DC Converters

Fourier-Based Harmonic Control of Plug-and-Play Active Filters for Input-Series/Output-Parallel Solid-State Transformers

Second Harmonic Ripple Voltage Suppression for Single-Phase ISOP Solid-State Transformer by Active Power Decoupling

Improved Control of Symmetrical Half-Bridge based Second-Order Harmonic Active Filters