Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Byeong-heon Kim"'
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 621-633 (2024)
Hastelloy C276, known for its high temperature strength and corrosion resistance, is essential in the manufacture of medical devices and aerospace components. This study developed a micro-controlled GTA welding technology capable of precisely welding
Externí odkaz:
https://doaj.org/article/b8b6c8daace945e9b8f1707ffc2c2a41
Publikováno v:
International Journal of Hydrogen Energy. 47:1954-1964
Recently, researchers have devoted more attention to supercapacitors (SCs) to integrate with batteries in energy storage systems (ESSs) for vehicle applications. In this study, we attempted to characterize the use of SCs in the ESS for a PEM fuel cel
Autor:
Hyunyong Kim, Ho Il Yoon, Wan-Ho Kim, Young-Dan Cho, Hyun-Mo Ryoo, Byeong-Heon Kim, Hye-Rim Shin
Publikováno v:
Journal of Dental Research. 100:423-431
Patients with cleidocranial dysplasia (CCD) caused by mutations in RUNX2 have severe dental anomalies, including delayed or absent eruption of permanent teeth. This requires painful and expensive surgical/orthodontic intervention because of the absen
Autor:
Byeong-Heon Kim, Seung-Ki Sul
Publikováno v:
IEEE Journal of Emerging and Selected Topics in Power Electronics. 5:760-774
The stability of a grid-tied, power conditioning system (PCS)—equipped with frequency drift anti-islanding—is analyzed in this paper. To reduce the nondetection zone (NDZ), the positive feedback gain (PFG) of the frequency drift method should be
Autor:
Seung-Ki Sul, Byeong-Heon Kim
Publikováno v:
IEEE Journal of Emerging and Selected Topics in Power Electronics. 4:1452-1461
This paper suggests the concept of shaping the pulsewidth-modulated (PWM) converter admittance. The analytic admittance matrix equation, which is derived from the small signal model of a PWM converter, is formulized. Based on the damping coefficient
Publikováno v:
2019 IEEE Energy Conversion Congress and Exposition (ECCE).
Fast switching characteristic of wide band gap (WBG) devices enables high frequency switching of power devices and thereby, facilitates high fundamental frequency operation of a machine. However, with the switching transition times being in orders of
Publikováno v:
Scopus-Elsevier
This paper presents effect of LC with clamping diodes dv/dt filter on current-controlled PMSM drives in case where 3-phase inverter output currents are measured and used in the digital control loop. In particular, this case can be reported in some ca
Publikováno v:
Korean Journal of Air-Conditioning and Refrigeration Engineering. 28:248-255
Publikováno v:
IECON
This paper presents a design strategy of a $dv/dt$ filter for high speed machine drives based on analytical analysis. Both a LCR filter and a LC with a diode bridge are studied and, a choice between two options can be made depending on a length of ca
Publikováno v:
Journal of Chemical & Engineering Data. 60:2146-2151
Phase behavior measurements of the (poly(lactic-co-glycolic acid) + dichloromethane + carbon dioxide) ternary system were taken using a variable-volume view cell at temperatures between 313.15 K and 363.15 K and at pressures up to 340 bar in poly(lac