Design of a SiC Mosfet 6-Phase Boost Rectifier

Nezio, Giulia Di; Benedetto, Marco Di; Lidozzi, Alessandro; Solero, Luca

doi:10.1109/ee53374.2021.9628237

Cited by 1 publication

(2 citation statements)

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“…In this case, however, the integration period is half of the previous case, as can be noticed when comparing Figure 4a,b. Then, during a switching period of the interval A, I rms can be evaluated as in (20), where I dc 2 can be carried out as in (21).…”

Section: Dc-bus Designmentioning

confidence: 99%

“…In particular, a detailed analysis of the DC-bus current stress and the voltage ripple, considering three different situations with phase displacement between the two 3-phase stator windings of the 6-phase electrical generator of 0 • , 30 • , and 60 • , is carried out in this paper. Compared to [21], the thermal analysis is carried out and the experimental tests added in order to confirm the proposed analysis. The 6-phase topology, chosen for the boost converter design, is attractive thanks to the reliable and fault tolerance capabilities and subsequently to achieve lower maintenance costs, making it very useful for offshore wind applications.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Design of a High-Efficiency SiC MOSFET 6-Phase Boost Rectifier

et al. 2022

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In this paper, the analysis and the design of a high-efficiency power electronic conversion system for offshore wind applications are presented. This system is composed of a 6-phase AC–DC converter based on the SiC power semiconductors, to be used to control the achievable power from the wind turbine electrical generator. Thanks to the phase redundancy, the proposed boost rectifier is suitable for applications where reliability and fault tolerance capability are the main targets. To select the appropriate power semiconductor devices, voltage and current ratings have to be determined. After that, the power loss equations are derived in order to evaluate the conversion efficiency. To design the appropriate DC-bus capacitor configuration, an analytical investigation is carried out by estimating the DC-bus RMS current and the voltage ripple. Finally, the thermal sizing of the system is calculated to identify a suitable heatsink. To validate the proposed analysis, the analytical results are compared to simulation ones using the Plexim/PLECS tool in the MATLAB/Simulink environment. For further validation, a prototype of the converter is built and the experimental results are carried out. The results demonstrate that the peak efficiency of the 6-phase boost rectifier can reach 98% at 100 kHz switching frequency.

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Section: Dc-bus Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%