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• W4225725503 abstract "The electromagnetic compatibility of wide-bandgap (WBG) power converters can be greatly improved using spread-spectrum modulation techniques. This article proposes a family of reduced common-voltage sigma–delta modulations (RCMV- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$Sigma Delta$</tex-math></inline-formula> ) for voltage source converters (VSC) that use gallium nitride (GaN) semiconductors. Specifically, this article proposes three new techniques: two reduced-state sigma–delta modulations (RS- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$Sigma Delta 1$</tex-math></inline-formula> &2), and an active sigma–delta strategy (A- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$Sigma Delta$</tex-math></inline-formula> ). The proposed modulation techniques reduce or eliminate the common-mode voltage (CMV) <italic xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>dv/dt</i> transitions and suppress the noise spikes in the conducted electromagnetic interference spectrum. Furthermore, this article proposes the use of fast-processing quantizers for RCMV- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$Sigma Delta$</tex-math></inline-formula> techniques as well as for hexagonal sigma–delta (H- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$Sigma Delta$</tex-math></inline-formula> ). These quantizers use a novel calculation methodology that simplifies the implementation of the proposed modulations and considerably reduces their computational cost. The performance and the total harmonic distortion (THD) of RCMV- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$Sigma Delta$</tex-math></inline-formula> techniques are analyzed here using MATLAB/Simulink and PLECS. Experimental results performed on a VSC converter that uses GaN e-HEMTs show how RCMV- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$Sigma Delta$</tex-math></inline-formula> techniques considerably improve electromagnetic compatibility and exhibit similar efficiencies and THD to those of H- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$Sigma Delta$</tex-math></inline-formula> ." @default.
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• W4225725503 date "2022-07-01" @default.
• W4225725503 modified "2023-10-14" @default.
• W4225725503 title "Fast-Processing Sigma–Delta Strategies for Three-Phase Wide-Bandgap Power Converters With Common-Mode Voltage Reduction" @default.
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• W4225725503 doi "https://doi.org/10.1109/tpel.2022.3147352" @default.
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