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| Content Provider | IET Digital Library |
|---|---|
| Author | Elserougi, Ahmed A. Massoud, Ahmed M. Abdelsalam, Ibrahim Ahmed, Shehab |
| Abstract | Here, a new bi-directional hybrid modular non-isolated DC–DC converter is proposed where it consists of a boost converter (BC) fed from the high-voltage (HV) side. At the BC output stage, a certain number of half bridge submodules (HB-SMs) is connected across the BC switch. During the turn-on period of BC switch, the HB-SMs are connected sequentially to the low-voltage (LV) side, which results in charging/discharging their capacitors from/into the LV side. While, during the turn-off period, the LV side is bypassed and the HB-SMs capacitors are connected in series across the BC output stage, which results in discharging/charging them into/from the HV side. The power flow is controlled in both directions by controlling the duty cycle. The proposed configuration provides self-balancing operation thanks to the sequential connection of HB-SMs capacitors, and it also provides the ability to operate with high conversion ratios. Illustration and analysis of the proposed converter and its closed-loop controller are presented. A full design of the values and ratings of the involved components are presented. Simulation study for a 2.5 MW (25 kV/10 kV) DC–DC converter is presented. Finally, experimental results for a downscaled prototype are presented for validation. |
| Starting Page | 3626 |
| Ending Page | 3636 |
| Page Count | 11 |
| ISSN | 17518687 |
| Volume Number | 12 |
| e-ISSN | 17518695 |
| Issue Number | Issue 15, Aug (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/12/15 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2017.1813 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2018-05-29 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | BC Output Stage BC Switch Bidirectional Hybrid Modular Nonisolated DC-DC Converter Closed Loop System Closed-loop Controller Control of Electric Power System DC-DC Power Converter Half-bridge Submodules HB-SMs Capacitor High Conversion Ratios High-voltage Side Load Flow Control Low Duty Cycle Low-voltage Side Medium-voltage DC Grid Other Power Apparatus And Electric Machine Power 2.5 MW Power Capacitor Power Flow Control Power Grid Self-balanced Nonisolated Hybrid Modular DC-DC Converter Self-balancing Operation Sequential Connection Voltage 10 KV Voltage 25 KV |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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