Abstract

A four-switch three-phase (FSTP) rotor-side converter (RSC) is proposed in this paper for doubly-fed induction generator based wind turbines (DFIG-WT) to increase the system reliability. The proposed converter topology has satisfactory robustness to open-circuit faults, and it is demonstrated to be feasible under the circumstance of wind speed change. According to different current flow directions, the model of FSTP RSC is set up. In addition, the space vector pulse width modulation (SVPWM) technique is simplified in FSTP RSC to get rid of sector identification and complex trigonometric calculations when a converter fault occurs. Besides that, the amplification of DC-bus voltage is reduced by using the proposed modulation technique. The overall performances are analyzed for both the six-switch three-phase (SSTP) and FSTP RSC based DFIG-WTs with wind speed step changes in Matlab/Simulink. The validity of the proposed FSTP RSC is demonstrated and it has the potential to be applied in practice.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.