Abstract
This article analyzes the impact of dc-link voltage control on the transient stability of voltage-source converters (VSCs) with the phase-locked loop (PLL) based synchronization. By integrating the dynamic of the dc-link voltage control into that of PLL, a fourth-order nonlinear large-signal model, which represents the dynamic behavior of the synchronism under large disturbances, is established. Further, the transient stability of the PLL-synchronized VSC is evaluated by using phase portraits. It is revealed that, compared to the case with a constant dc-link voltage, the dc-link voltage control would jeopardize the transient stability of the PLL-synchronized VSC, especially in the weak grid condition. Next, the parametric effects of the dc-link voltage control on the transient stability are demonstrated, which shed clear insights into the controller design to enhance the transient stability of VSCs. Lastly, all the theoretical findings are validated by the experimental tests.
| Original language | English |
|---|---|
| Title of host publication | 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia |
| Number of pages | 5 |
| Publisher | IEEE |
| Publication date | 2022 |
| Pages | 435-439 |
| ISBN (Electronic) | 9784886864253 |
| DOIs | |
| Publication status | Published - 2022 |
| Event | 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia - Himeji, Japan Duration: 15 May 2022 → 19 May 2022 |
Conference
| Conference | 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia |
|---|---|
| Country/Territory | Japan |
| City | Himeji |
| Period | 15/05/2022 → 19/05/2022 |
| Sponsor | IEEE Industrial Electronics Society (IES), IEEE Industry Aplications Society (IAS), IEEE Power Electronics Society (PELS) |
Bibliographical note
Publisher Copyright:© 2022 IEEJ-IAS.
Keywords
- DC-link voltage control
- phase-locked loop
- transient stability
- voltage-source converter