Feedforward Deadtime Compensation Using Current Zero Crossing Detection

A feedforward deadtime compensation algorithm for inverters is proposed, utilizing current zero crossing detection (ZCD) to generate a current direction signal for the feedforward input. Conventional deadtime compensation relies on information from a standard current sensor, which may not capture cu...

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Bibliographic Details
Published in2022 IEEE Energy Conversion Congress and Exposition (ECCE) pp. 1 - 7
Main Authors Kercher, Michael, Yu, Wensong, Husain, Iqbal
Format Conference Proceeding
LanguageEnglish
Published IEEE 09.10.2022
Subjects
Computational modeling
deadtime compensation
Distortion
Hardware
Inverters
Simulation
Total harmonic distortion
Voltage
ZCD
zero crossing detection
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Summary:A feedforward deadtime compensation algorithm for inverters is proposed, utilizing current zero crossing detection (ZCD) to generate a current direction signal for the feedforward input. Conventional deadtime compensation relies on information from a standard current sensor, which may not capture current ripple behavior accurately due to latency, frequency response, and noise limitations. The ZCD and hardware logic circuits operate at extremely high speed, and the feedforward compensation algorithm has minimal computational requirements. Simulation results show a significant improvement in load current total harmonic distortion (THD). The proposed circuit was constructed, and hardware testing with a SiC inverter showed similar performance to simulation.
ISSN:2329-3748
DOI:10.1109/ECCE50734.2022.9947454