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A Switching Event-Triggered Communication Method for DC–DC Converters
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DOI：10.1109/JESTPE.2026.3665798.png)
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Abstract
En 中文
The stable and effective communication is a fundamental prerequisite for power electronic converters (PECs) to facilitate critical functions, such as condition monitoring, fault detection, and power flow management. The existing switching frequency modulation methods employ switching ripples as data carriers. Their demodulation relies on a spectral analysis of the ripple signal, which suffers from limited spectral resolution. This limitation thus constrains the achievable data rate and increases system disturbances. To address this limitation, this article proposes a novel switching event-triggered communication method that leverages high-frequency (HF) switching oscillations as data carriers. Based on an analysis of the causal relationship between power device switching actions and HF switching oscillations, an HF oscillation current sensor and a signal processing circuit were designed to extract the switching oscillation current and convert it into discrete switching events. Theoretical and experimental investigations demonstrate that the proposed method achieves a demodulation period of just two switching cycles and a switching frequency resolution of 0.2%, while maintaining robust performance under dynamic operating conditions.
Keywords:
DC–DC converters
HF switching oscillation
high-frequency (HF) oscillation current sensor
power line communication (PLC)
switching frequency modulation
Journal
I
IF:
4.9
Papers:
249
Citations:
0