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Modular multilevel topologies are possible candidates for medium-voltage wind turbines because of their scalability and possible redundancy. This paper concentrates on their design and investigates the influence of generator-to-grid voltage ratio, generator nominal frequency, module-capacitance minimising control approaches, third harmonic injection and fault ride-through capability requirement on...
This paper presents a new approach for DC link RMS current estimation in systems with several converters and connected DC links. The proposed calculation method in frequency domain enables accurate and fast estimations for an optimized design of the DC link components considering effects of interconnection parasitics and PWM interleaving.
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