Optimization of periodic PWM parameters for common‑mode noise suppression of on‑board DC/DC converters

Junling Luan; Wenrong Yang; Tianchen Huo

Optimization of periodic PWM parameters for common‑mode noise suppression of on‑board DC/DC converters

Junling Luan

Wenrong Yang

Tianchen Huo

Vol. 25, No. 6, pp. 979-991, Jun. 2025

10.1007/s43236-024-00946-7

On-board DC/DC converters

Spread-spectrum modulation

Common-mode noise

Electromagnetic interference

Parameter optimization

Abstract

To suppress conducted interference during the operation of on-board DC/DC converters for electric vehicles and to reduce the size/volume of electromagnetic interference (EMI) filters, this work proposes a method to develop a common-mode (CM) noise prediction model based on periodic PWM (PPWM) parameters. The CM noise spectrum of phase-shifted full-bridge converters can be predicted from the developed model. The suppression effect of the interaction between the modulation frequency fm, the maximum frequency offset Δf, and the modulation wave on CM noise is explored in detail based on the developed model. The beetle antennae search (BAS) algorithm is applied to optimize the modulation parameters and find the optimal spread spectrum modulation strategy in the frequency band corresponding to the electromagnetic compatibility (EMC) standards for electric vehicles. The proposed CM interference prediction model and three PPWM modulation strategies are verified experimentally, and the generalities of the three modulation strategies are analyzed.

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Cite this article

[IEEE Style]

J. Luan, W. Yang, T. Huo, "Optimization of periodic PWM parameters for common‑mode noise suppression of on‑board DC/DC converters," Journal of Power Electronics, vol. 25, no. 6, pp. 979-991, 2025. DOI: 10.1007/s43236-024-00946-7.

[ACM Style]

Junling Luan, Wenrong Yang, and Tianchen Huo. 2025. Optimization of periodic PWM parameters for common‑mode noise suppression of on‑board DC/DC converters. Journal of Power Electronics, 25, 6, (2025), 979-991. DOI: 10.1007/s43236-024-00946-7.