• Title/Summary/Keyword: Space Hector

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Cascade 3-Phase IHCML Inverter using Maximal Distension Vector Control (최근접 벡터 제어기법을 이용한 cascade 3상 IHCML 인버터)

  • Park, Jin-Hyun;Park, Sung-Jun;Song, Sung-Geun
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.23 no.5
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    • pp.101-109
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    • 2009

  • In this paper, a new method, cascade 3 phase IHCML(Isolated H-bridge Cascade Multi-Level) inverter and a control method is proposed by using two 3-phase transformers that have respectively different transformation rates. Vector control technique in which the highest proximity vector has been used is also put into use. With this process, the switching frequency is almost identical with the output fundamental frequency, which makes less switching loss, and the switching frequency of the small volume of the H-bridge that is in charge of small power is highly controlled, which improves the quality of the output voltage.

  • https://doi.org/10.5207/JIEIE.2009.23.5.101 인용 PDF KSCI

The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the emission line galaxy sample from the anisotropic power spectrum between redshift 0.6 and 1.1

  • Arnaud de Mattia;Vanina Ruhlmann-Kleider;Anand Raichoor;Ashley J Ross;Amelie Tamone;Cheng Zhao;Shadab Alam;Santiago Avila;Etienne Burtin;Julian Bautista;Florian Beutler;Jonathan Brinkmann;Joel R Brownstein;Michael J Chapman;Chia-Hsun Chuang;Johan Comparat;Helion du Mas des Bourboux;Kyle S Dawson;Axel de la Macorra;Hector Gil-Marin;Violeta Gonzalez-Perez;Claudio Gorgoni;Jiamin Hou;Hui Kong;Sicheng Lin;Seshadri Nadathur;Jeffrey A Newman;Eva-Maria Mueller;Will J Percival;Mehdi Rezaie;Graziano Rossi;Donald P Schneider;Prabhakar Tiwari;M Vivek;Yuting Wang;Gong-Bo Zhao
    • Monthly Notices of the Royal Astronomical Society
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    • v.501 no.4
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    • pp.5616-5645
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    • 2021

  • We analyse the large-scale clustering in Fourier space of emission line galaxies (ELG) from the Data Release 16 of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey. The ELG sample contains 173 736 galaxies covering 1170 deg2 in the redshift range 0.6 eff = 0.845 we measure DV(zeff)/rdrag = 18.33+0.57-0.62, with DV the volume-averaged distance and rdrag the comoving sound horizon at the drag epoch. In combination with the RSD measurement, at zeff = 0.85 we find fσ8(zeff) = 0.289+0.085-0.096, with f the growth rate of structure and σ8 the normalization of the linear power spectrum, DH(zeff)/rdrag = 20.0+2.4-2.2 and DM(zeff)/rdrag = 19.17 ± 0.99 with DH and DM the Hubble and comoving angular distances, respectively. These results are in agreement with those obtained in configuration space, thus allowing a consensus measurement of fσ8(zeff) = 0.315 ± 0.095, DH(zeff)/rdrag = 19.6+2.2-2.1 and DM(zeff)/rdrag = 19.5 ± 1.0. This measurement is consistent with a flat ΛCDM model with Planck parameters.

  • https://doi.org/10.1093/mnras/staa3891 인용