Application of Periodic Carrier Frequency Modulation for Harmonic and EMI Reduction in GaN-Based Motor Drive

Ma, Yu; Yang, Ming; Lyu, Zekai; Li, Si; Xu, Dianguo

doi:10.23919/icems50442.2020.9291223

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…where (32) where g,k max( ) i  is the maximum value representing the output ripple vector, which is used to analyze the dynamic changes in the output current ripple locus.…”

Section: Current Ripple Modelmentioning

confidence: 99%

“…Reference [31] introduces a novel PWM strategy based on uniform distribution PWM and experimentally verifies its effectiveness in eliminating EMI peaks, reducing conducted EMI, and minimizing switch losses. Reference [32] analyzes the suppression of harmonics and common-mode EMI using periodic PWM, validating the accuracy of theoretical analysis and the effectiveness of algorithms through experiments.…”

Section: Introductionmentioning

confidence: 99%

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A Spread-Spectrum Modulation Scheme for a 3 × 6 Indirect Matrix Converter Based on a Current Ripple Model

Zhou,

Xue,

et al. 2024

Energies

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Focused on addressing harmonic suppression in multiphase indirect matrix converters (IMCs), this study explores spread-spectrum modulation technology through ripple analysis calculations. We introduce a current ripple spread-spectrum modulation (CR-SSM) method tailored for multiphase IMC systems. In this approach, a 3 × 6-phase IMC is modeled as a two-port network, and a small-signal model of the output side is established. The transfer function is utilized to analyze the two-port network in the complex frequency domain (s-plane). The time-domain expression of the output current ripple is derived in vector form. Subsequently, the distribution of the output ripple and locus are determined based on specified constraints. The carrier frequency is dynamically adjusted online according to the specified ripple locus. Compared to classical periodic PWM methods, this approach offers a broader range of frequency variations and achieves a more uniform output spectrum. Furthermore, CR-SSM optimizes system efficiency and enhances spread-spectrum modulation. Experimental results demonstrate that this method effectively enhances the quality of input and output waveforms in multiphase IMC systems.

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“…where (32) where g,k max( ) i  is the maximum value representing the output ripple vector, which is used to analyze the dynamic changes in the output current ripple locus.…”

Section: Current Ripple Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%