Analytical Estimation of MMC Short-Circuit Currents in the AC In-Feed Steady-State Stage
IEEE Transactions on Power Delivery（2022）
Abstract
Modular multilevel converters (MMCs) are vulnerable to DC short-circuit faults. Analytical estimation of the AC and DC short-circuit currents in the AC in-feed steady-state stage is essential to reveal fault mechanisms and design protections. However, the nonlinearity of the MMC has brought significant difficulties to the calculation. This paper proposes a novel analytical calculation method for t...
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Key words
Circuit faults,Fault currents,Steady-state,Short-circuit currents,Estimation,Transient analysis,Resistance
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