A Control Strategy of Multichannel DC/DC Converters with Cross-vehicle Parallel Connection for Urban Rail Vehicles with Wireless Power Transfer
A new droop control method is proposed in this paper to solve three problems, the problem of power error caused by the difference of output impedance of DC / DC circuits in the on-board power supply system of non-contact power supply urban rail vehicles, the problem that there is no unified control...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Control and Information Technology
2021-01-01
|
| Series: | Kongzhi Yu Xinxi Jishu |
| Subjects: | |
| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2021.03.200 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | A new droop control method is proposed in this paper to solve three problems, the problem of power error caused by the difference of output impedance of DC / DC circuits in the on-board power supply system of non-contact power supply urban rail vehicles, the problem that there is no unified control between carriages, and the problem that each DC/DC circuit does not share the current in the constant current charging control process, respectively. The proposed method guarantees the power distribution accuracy of each vehicle and each DC/DC conversion circuit by modifying the droop coefficient, making it possible for multi-vehicle communication and voltage stabilization, and has better anti-disturbance capability. The reference voltage is improved by introducing a modified fine adjustment to solve the problem of power imbalance. Finally an average current distribution method is proposed to ensure the current sharing of each DC/DC, and is verified by simulation and experiment. |
|---|---|
| ISSN: | 2096-5427 |