Abstract
Parallel-connected ac/dc/ac converters are used to increase power capability and have redundancy in high power applications. However, due to parallel connection, there exists a circulating current which does not contribute to the ac side load or source currents and causes extra losses. This paper analyses the circulating current for two parallel-connected ac/dc/ac converter system. The ac/dc/ac converter system may have separate dc-links for each ac/dc/ac converter or a common dc-link, In both cases, the circulating currents are analyzed in this paper. The system with and without common dc-links are simulated, and the comparison of the circulating current and total ac side source and load currents in both cases are presented.
| Original language | English |
|---|---|
| Title of host publication | 2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe |
| Publisher | IEEE |
| Publication date | Sept 2019 |
| Pages | P.1-P.7 |
| ISBN (Print) | 978-1-7281-2361-5 |
| ISBN (Electronic) | 978-9-0758-1531-3 |
| DOIs | |
| Publication status | Published - Sept 2019 |
| Externally published | Yes |
| Event | 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe - Genova, Italy Duration: 3. Sept 2019 → 5. Sept 2019 |
Conference
| Conference | 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe |
|---|---|
| Country/Territory | Italy |
| City | Genova |
| Period | 03/09/2019 → 05/09/2019 |
Keywords
- AC/AC converter
- Pulse-width modulation (PWM)
- Voltage-source inverters (VSI)