Abstract
Modular multilevel converter (MMC) has developed into an attractive topology for the variable-speed motor drives. However, the main challenge for the applications is the large low-frequency capacitor voltage fluctuation. This paper proposes a novel control strategy that is able to reduce the average capacitor voltages in a satisfying range when the motor operates below the base speed. Thus, the capacitor voltages can be well controlled under the nominal voltage for much better safety and reliability, and in the meantime the motor is able to operate with lower speed, larger load torque, and lower circulating current in the MMC for the wider range of operation conditions and greater control performances. The effectiveness of the proposed control strategy are demonstrated by the simulation results in PSCAD/EMTDC.
| Original language | English |
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| Title of host publication | 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 |
| Number of pages | 5 |
| Publisher | IEEE Signal Processing Society |
| Publication date | 22 Oct 2018 |
| Pages | 1549-1553 |
| Article number | 8507825 |
| ISBN (Electronic) | 9784886864055 |
| DOIs | |
| Publication status | Published - 22 Oct 2018 |
| Event | 8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 - Niigata, Japan Duration: 20 May 2018 → 24 May 2018 |
Conference
| Conference | 8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 |
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| Country/Territory | Japan |
| City | Niigata |
| Period | 20/05/2018 → 24/05/2018 |
| Sponsor | IEEE Industry Applications Society (IAS), IEEE Power Electronics Society (PELS), IEEJ Industry Applications Society (IAS) |
| Series | 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 |
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Bibliographical note
Publisher Copyright:© 2018 IEEJ Industry Application Society.
Keywords
- Capacitor voltages balancing
- Low-frequency fluctuation
- Modular Multilevel Converter (MMC)
- Variable-speed driver