Abstract
A power decoupling control for wind power converter based on series-connected modular multilevel converter (SCMMC) and open-winding permanent magnetic synchronous generator (OW-PMSG) is proposed in this article. The power converter based on SCMMC and OW-PMSG achieves medium voltage direct conversion and transmission and has higher dc-bus voltage compared with conventional MMC, which makes it a promising solution for copper consumption reduction of cable, low power transmission loss, and the elimination of the step-up converter. The proposed power decoupling control realizes independent power control of each phase in the wind power converter by decoupling the negative-sequence and zero-sequence current and guarantees the phase dc-link voltages balance of the SCMMC and the robustness to restrain the imbalance power disturbance. Instantaneous three phase dc-link voltages balance of the SCMMC is achieved especially when the imbalance of phase dc-link voltages occurs. The feasibility of the wind power converter based on SCMMC and OW-PMSG and the proposed power decoupling control is verified through simulations and a scaled-down laboratory prototype.
| Original language | English |
|---|---|
| Pages (from-to) | 8091-8101 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 69 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 1 Aug 2022 |
Keywords
- Open-winding permanent magnet synchronous generator (OW-PMSG)
- power decoupling control
- series-connected modular multilevel converter (SCMMC)
- wind power