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| Content Provider | IET Digital Library |
|---|---|
| Author | Xiong, Wenjing Liu, Yonglu Lin, Zhihao Sun, Yao Su, Mei |
| Abstract | For single-phase current source converter (SCSC), at least one upper device and one lower device have to be gated on and maintained at any time. Otherwise, an open-circuit of the DC-link current would occur and destroy the devices. In addition, a bulky DC-link inductor is usually required to obtain a smooth DC-link current. To address these issues, this study proposes a novel SCSC with high reliability and high-power density. In the proposed circuit, even all the switches are turned on or turned off simultaneously, neither short-circuit nor open-circuit will happen. The inductance in DC-side is reduced significantly byadopting the active power decoupling technique. First, the operation principle of the proposed converter is introduced in detail. Then, a closed-loop control method is presented to regulate the DC-link current, maintain the DC component of the decoupling capacitor voltage, and achieve sinusoidal grid current. Besides, the parameter design of the circuit and controller is investigated. Moreover, the efficiency comparison between the proposed and other SCSCs is carried out. Finally, the effectiveness of the proposed topology is verified by the experimental results. |
| Starting Page | 1218 |
| Ending Page | 1226 |
| Page Count | 9 |
| ISSN | 17554535 |
| Volume Number | 13 |
| e-ISSN | 17554543 |
| Issue Number | Issue 6, May (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/13/6 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2019.1236 |
| Journal | IET Power Electronics |
| Publisher Date | 2020-01-09 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Active Power Decoupling Technique Bulky DC-link Inductor Capacitor Closed Loop System Control of Electric Power System Current Control DC Component DC-link Current DC-side Electric Current Control High Power Density High Reliability High-power Density Inductor Invertors Lower Device Open-circuit Other Power Apparatus And Electric Machine Power Capacitor Power Converter Power Electronics Power Grid Power Supplies to Apparatus Power Supply Single-phase Current Source Converter Sinusoidal Grid Current Smooth DC-link Supervisory Circuit Switching Converter Upper Device Voltage Control |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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