Efficiency Analysis of a Solar Photovoltaic DC and Existing AC Distribution System for Bahirdar University Data Center

Workineh, Tewodros Gera; Yetayew, Tefera T.; Sisay, Tesfaye B.

doi:10.1007/978-3-030-93709-6_14

Cited by 1 publication

(2 citation statements)

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“…From (2) and TABLE III, the internal emission is assumed to follow the trend w.r.t change in power but with a higher magnitude. Reframing (2) in terms of current, the internal emission 𝐼 𝑢 is given by (3).…”

Section: E Summary Of the Measurement Resultsmentioning

confidence: 99%

“…The aim is to have a backup PSU in case one PSU fails [2]. Owners of data centers are becoming more and more inclined to use green energy by e.g., using solar power within their facility leading to additional inverters employing e.g., pulse width modulation (PWM) techniques being introduced inside the facilities [3]. The use of PWM helps in reducing frequency distortion below 2 kHz (i.e., harmonics) but instead adds distortion in the high-frequency region.…”

Section: Introductionmentioning

confidence: 99%

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Propagation of Supraharmonics in a Data Center With Different Operating Modes of UPS

Sutaria

Rönnberg

2023

IEEE Access

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A data center is a major hub of different converters ensuring continuous power to the server loads. The pulse width modulation switching techniques with frequency emission from 2 to 150 kHz (i.e., supraharmonics) in these converters call for a study of the magnitude and propagation of this emission within data centers where UPS is one of the main contributors of supraharmonics. The paper shows, with measurements and model, the change in magnitude and propagation of supraharmonics with the change in the operating mode of the UPS. The magnitude of supraharmonics shows a non-linear dependency on the power consumed in the online mode. In bypass mode, the magnitude of supraharmonics shows a dependency on the type of load connected. The filter connected between PE-N at the input side of the UPS can cause resonance in the phase conductors. The results show that to study the emission, immunity, and electromagnetic compatibility of supraharmonics for UPS, the factors such as operating mode, the type of load connected, and the input and output impedance need to be considered.

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Section: E Summary Of the Measurement Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%