Operating Cycle Performance, Lost Periodicity and Waveform Distortion of Switch-Mode Power Supplies

Xiao Xu; Adam Collin; Sasa Djokic; Roberto Langella; Alfredo Testa

doi:10.1109/TIM.2018.2813761

Operating Cycle Performance, Lost Periodicity and Waveform Distortion of Switch-Mode Power Supplies

Xiao Xu, Adam Collin, Sasa Djokic, Roberto Langella, Alfredo Testa

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

This paper investigates the performance of switch-mode power supplies used in desktop PCs (PC-SMPS’) across the entire range of operating powers. Experimental results show that at low to medium operating powers, the input ac current might lose its periodicity with supply voltage frequency, when PCS-MPS’ can be an unexpected source of interharmonics and dc component. In such cases, there is a significant increase of PC-SMPS’ current waveform distortion and a substantial decrease of efficiency and operational power factors, which requires application of appropriate measurement and calculation procedures during the analysis. To correctly assess these power-dependent changes in performance and power quality indicators, the paper introduces a novel testing and evaluation methodology, based on the known or assumed PC-SMPS operating cycle.

Original language	English
Number of pages	9
Journal	IEEE Transactions on Instrumentation and Measurement
Early online date	30 Mar 2018
DOIs	https://doi.org/10.1109/TIM.2018.2813761
Publication status	E-pub ahead of print - 30 Mar 2018

Keywords

DC current; efficiency; harmonics; interharmonics; lost periodicity; operating cycle, power quality; switch-mode power supply

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title = "Operating Cycle Performance, Lost Periodicity and Waveform Distortion of Switch-Mode Power Supplies",

abstract = "This paper investigates the performance of switch-mode power supplies used in desktop PCs (PC-SMPS{\textquoteright}) across the entire range of operating powers. Experimental results show that at low to medium operating powers, the input ac current might lose its periodicity with supply voltage frequency, when PCS-MPS{\textquoteright} can be an unexpected source of interharmonics and dc component. In such cases, there is a significant increase of PC-SMPS{\textquoteright} current waveform distortion and a substantial decrease of efficiency and operational power factors, which requires application of appropriate measurement and calculation procedures during the analysis. To correctly assess these power-dependent changes in performance and power quality indicators, the paper introduces a novel testing and evaluation methodology, based on the known or assumed PC-SMPS operating cycle.",

keywords = "DC current; efficiency; harmonics; interharmonics; lost periodicity; operating cycle, power quality; switch-mode power supply",

author = "Xiao Xu and Adam Collin and Sasa Djokic and Roberto Langella and Alfredo Testa",

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doi = "10.1109/TIM.2018.2813761",

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T1 - Operating Cycle Performance, Lost Periodicity and Waveform Distortion of Switch-Mode Power Supplies

AU - Xu, Xiao

AU - Collin, Adam

AU - Djokic, Sasa

AU - Langella, Roberto

AU - Testa, Alfredo

PY - 2018/3/30

Y1 - 2018/3/30

N2 - This paper investigates the performance of switch-mode power supplies used in desktop PCs (PC-SMPS’) across the entire range of operating powers. Experimental results show that at low to medium operating powers, the input ac current might lose its periodicity with supply voltage frequency, when PCS-MPS’ can be an unexpected source of interharmonics and dc component. In such cases, there is a significant increase of PC-SMPS’ current waveform distortion and a substantial decrease of efficiency and operational power factors, which requires application of appropriate measurement and calculation procedures during the analysis. To correctly assess these power-dependent changes in performance and power quality indicators, the paper introduces a novel testing and evaluation methodology, based on the known or assumed PC-SMPS operating cycle.

AB - This paper investigates the performance of switch-mode power supplies used in desktop PCs (PC-SMPS’) across the entire range of operating powers. Experimental results show that at low to medium operating powers, the input ac current might lose its periodicity with supply voltage frequency, when PCS-MPS’ can be an unexpected source of interharmonics and dc component. In such cases, there is a significant increase of PC-SMPS’ current waveform distortion and a substantial decrease of efficiency and operational power factors, which requires application of appropriate measurement and calculation procedures during the analysis. To correctly assess these power-dependent changes in performance and power quality indicators, the paper introduces a novel testing and evaluation methodology, based on the known or assumed PC-SMPS operating cycle.

KW - DC current; efficiency; harmonics; interharmonics; lost periodicity; operating cycle, power quality; switch-mode power supply

U2 - 10.1109/TIM.2018.2813761

DO - 10.1109/TIM.2018.2813761

M3 - Article

JO - IEEE Transactions on Instrumentation and Measurement

JF - IEEE Transactions on Instrumentation and Measurement

SN - 0018-9456

ER -

Operating Cycle Performance, Lost Periodicity and Waveform Distortion of Switch-Mode Power Supplies

Abstract

Keywords

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