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This paper presents thermal characteristics of rotor-side converter (RSC) in doubly-fed induction generator (DFIG) wind turbines (WTs). A numerical power loss and thermal model simulator has been developed to obtain instantaneous junction temperature of power devices for a wide operating range of RSCs. Thermal performance of four RSC candidates, including Si IGBT based 2L / 3L-NPC / 3L-ANPC RSCs and...
In DFIG drivetrain, traditional two-level (2L) rotor-side converter (RSC) suffers from high thermal stress during its operation with high rotor current at low slip frequency. This paper presents the application of a three-level (3L) ANPC converter as the RSC in DFIG drivetrain. The thermal performance of the 3L-ANPC RSC is analyzed in details through numerical simulator approach for a wide operating...
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