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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhao, Hengyang Zhu, Taiyun Cheng, Dengfeng Li, Binbin Ding, Jinjin Li, Yuanzhi |
| Abstract | Distributed photovoltaic (PV) power generation system has recently gotten more and more attention in renewable energy fields. Solid state transformer (SST) is a kind of power electronics equipment which utilises power electronics technology to achieve voltage conversion. This paper adopts a topology of single-phase smart modular cascaded SST which consists of three stages, cascaded modular rectifier stage, the dual active bridge (DAB) converter stage, and the single-phase full-bridge inverter stage. The output-paralleled DAB converters offer a DC-bus port. This study proposes an improving MPPT method for the PV cells which directly connect to the DC-bus port. Rectifier stage adopts a single-phase d–q vector-based common-duty-radio controller aiming at balancing each modular current, DAB stage utilizes a voltage feedforward and feedback-based controller to regulate each modular voltage. The DC-bus voltage could be regulated to track MPP of PV cells. Compared to conventional control strategy, the improving one simplifies the circuit structure, reduces the controlled variables, provides the possibility of increasing the number of cascaded modules, and makes it easier to access to distribution network. Simulation results are presented to proving the proposed control strategy. In addition, a 6kW experimental prototype is built to validate the effectiveness. |
| Starting Page | 1872 |
| Ending Page | 1879 |
| Page Count | 8 |
| Volume Number | 2017 |
| e-ISSN | 20513305 |
| Issue Number | Issue 13, Jan (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2017/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2017.0656 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2017-01-01 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution-No Derivs License (http://creativecommons.org/licenses/by-nd/3.0/) |
| Subject Keyword | Bidirectional Power Flow Cascaded Modular Rectifier Stage Circuit Structure Control of Electric Power System DAB Converter DC-bus Port DC-bus Voltage Distributed Photovoltaic Power Generation System Distributed Power Generation Distributed PV Power Generation System Distribution Network Dual Active Bridge Converter Stage Energy Generation System Feedback-based Controller Fossil Energy Invertors Maximum Power Point Trackers Maximum Power Point Tracking Method Modular Voltage Regulation Output-paralleled DAB Converter Photovoltaic Power System Power 6.0 KW Power And Energy Control Power Control Power Converter Power Distribution Control Power Electronics Equipment Power Factor Correction Power Generation Control Power Grid Power System Control Power Transformer PV Cell Reactive Power Compensation Rectifying Circuit Renewable Energy Generation System Single-phase D–q Vector-based Common-duty-radio Controller Single-phase Full-bridge Inverter Stage Single-phase Smart Modular Cascaded SST Smart Modular Cascaded Solid State Transformer Solar Energy Solar Power Stations Transformer And Reactors Voltage Control Voltage Conversion Voltage Feedforward Voltage Sag Compensation Wind Energy |
| Content Type | Text |
| Resource Type | Article |
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