DC Voltage and Torque Ripple Mitigation in Modular PMSG Drives for Off-Shore Multi-MW WECSs with Linear SPWM modulation
European Conference on Power Electronics and Applications(2019)
摘要
A multi-modular axial flux machine is used for wind energy conversion systems (WECSs) where each module is connected to its own two-level converter. All converters are connected in series at the DC side to allow IIVDC transmission, In the paper, an in-depth reasoning for the control of each individual voltage. A phase shift between PWM carrier signals of the neighbouring converters is implemented. A mathematical analysis is carried out. A criterion for the best choice of the phase shift to minimize dc voltage and torque harmonics is proposed.
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关键词
Off-shore Wind turbines,Sequential Command,Series connected,Multi-modular machines,Harmonic elimination
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