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- W4310814892 abstract "When the grid voltage is asymmetrical, the performance of the modular multilevel converter is greatly compromised., and the energy fluctuation of the bridge arm increases. In order to improve the fault ride-through capability of MMC under asymmetric faults, a nonlinear backstepping control strategy for modular multilevel converters based on energy balance is proposed in this paper. The energy balance control module uses the control of the energy balance of the bridge arm as the control objective of the module. It also provides a reference value for the bridge arm circulating current for the bridge arm current component in the nonlinear inverse stepper controller. The nonlinear control module adopts a backstepping control method based on Lyapunov stability theory. Under the established spatial dynamic model, the method can quickly suppress the negative sequence current while improving the transient performance of the sum of the system three-phase currents and sub-module capacitance voltages at unbalanced network voltage. The simulation results show that the energy balance-based backstepping control strategy can control the energy variation inside the MMC effectively, improve transient operation performance under asymmetric faults, and facilitate the stable operation of the system." @default.
- W4310814892 created "2022-12-18" @default.
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- W4310814892 date "2022-11-04" @default.
- W4310814892 modified "2023-10-16" @default.
- W4310814892 title "Back-stepping control strategy of modular multilevelconverter based on dynamic energy balance" @default.
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- W4310814892 doi "https://doi.org/10.1109/peac56338.2022.9959399" @default.
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