4- https://doi.org/10.1049/joe.2018.8716
Loss reduction analysis and control of AC‐voltage‐boosted FBSM MMC by injecting second harmonic circulating current
- Feb 6, 2019
- The Journal of Engineering
- Muchao Xiang +2 more
Reducing the power loss and handling short‐circuit faults in HVDC systems are crucial for economical and reliable operation of modular multilevel converters (MMC). This paper proposes a loss reduction method for AC voltage‐boosted FBSM‐MMC by controlling the second harmonic component in the circulating current. The relationship between converter loss and second harmonic circulating current (SHCC) is first derived for AC voltage‐boosted FBSM‐MMC. From the analysis, it can be seen that the converter loss can be reduced by injecting the optimal SHCC into the arm current. The topology comparison between traditional FBSM‐MMC and AC voltage‐boosted FBSM‐MMC is carried out to show the benefit of this method. Simulation results using PSCAD/EMTDC confirm the feasibility and validity of the proposed loss reduction method for AC voltage‐boosted FBSM‐MMC.
- # Faults In HVDC Systems
- # Operation Of Modular Multilevel Converters
- # Converter Loss
- # Modular Multilevel Converters
- # Arm Current
- # Topology Comparison
- # HVDC Systems
- # Harmonic Component
- # Loss Reduction
- # Operation Of Converters
