Zobrazeno 1 - 10
of 403
pro vyhledávání: '"Jang-Young Choi"'
Publikováno v:
Mathematics, Vol 12, Iss 22, p 3526 (2024)
Wound rotor synchronous condensers (WRSCs) are DC-excited rotor machines that utilize rotor winding instead of permanent magnets. Their voltage regulator controls the rotor field to generate or absorb reactive power, thereby regulating grid voltage o
Externí odkaz:
https://doaj.org/article/a4bb64d5a5734e689bd4aac41ecb92ab
Autor:
Manh-Dung Nguyen, Woo-Sung Jung, Duy-Tinh Hoang, Yong-Joo Kim, Kyung-Hun Shin, Jang-Young Choi
Publikováno v:
Mathematics, Vol 12, Iss 18, p 2922 (2024)
This study presents a two-dimensional analytical method for fast optimization, taking into consideration the influence of the eddy current in a magnet and iron loss within a coaxial magnetic gear. Subdomain modeling was utilized to obtain vector pote
Externí odkaz:
https://doaj.org/article/14bcf676ff694cb58d18f84c8be56fe8
Autor:
Hwi-Rang Ban, Kyeong-Tae Yu, Ju-Hyeong Lee, Jang-Young Choi, Kyong-Hwan Kim, Han-Wook Cho, Kyung-Hun Shin
Publikováno v:
AIP Advances, Vol 14, Iss 3, Pp 035131-035131-7 (2024)
This paper presents an analytical method for analyzing the electromagnetic performance of a superconducting (SC) machine according to the 10 MW shielding configuration and the presence or absence of an armature core. To establish the SC machine desig
Externí odkaz:
https://doaj.org/article/1d1acaf6aea04d08b80e9a57d7b16685
Publikováno v:
AIP Advances, Vol 14, Iss 3, Pp 035028-035028-6 (2024)
In this paper, an electromagnetic analysis method is proposed to improve force characteristics by using spring permanent magnets (PMs) along the axial and circumferential directions of a linear oscillatory generator (LOG). For accurate electromagneti
Externí odkaz:
https://doaj.org/article/7bdcd68d73b4460088860685d853c760
Autor:
Kyeong-Tae Yu, Hwi-Rang Ban, Ju-Hyeong Lee, Jang-Young Choi, Soyoung Sung, Jung-Hyung Park, Kyung-Hun Shin
Publikováno v:
AIP Advances, Vol 14, Iss 3, Pp 035042-035042-6 (2024)
This study proposed an improved analytical method for electromagnetic field analysis of a wound rotor synchronous machine (WRSM) considering the permeability of soft magnetic materials. A simplified analytical model considering the magnetic permeabil
Externí odkaz:
https://doaj.org/article/86ef27e6340d4adf931551b3143c1a61
Analytical and experimental study of electromagnetic loss and temperature rise in induction machines
Autor:
Hwi-Rang Ban, Kyeong-Tae Yu, Ju-Hyeong Lee, Jang-Young Choi, Soyoung Sung, Jung-Hyung Park, Han-Wook Cho, Kyung-Hun Shin
Publikováno v:
AIP Advances, Vol 14, Iss 3, Pp 035101-035101-6 (2024)
This paper focuses on electromagnetic and loss analyses of an induction machine using the subdomain method. The proposed method derives an analytical solution for each subdomain using electromagnetic theory. On the basis of the derived analytical sol
Externí odkaz:
https://doaj.org/article/8f3288c6a88d46a883330dac9911d9a2
Autor:
Woo-sung Jung, Hoon-Ki Lee, Jun-Won Yang, Kyong-Hwan Kim, Ji-Yong Park, Kyung-Hun Shin, Jang-Young Choi
Publikováno v:
AIP Advances, Vol 14, Iss 3, Pp 035331-035331-6 (2024)
As the performance of permanent-magnet synchronous generators improves, research on device noise is also becoming important. This study analyzes the causes of electromagnetic noise, such as the back electromotive force, cogging torque, torque ripple,
Externí odkaz:
https://doaj.org/article/44520e726ec84342bfa182e370d8b952
Autor:
Hyeon-Ho Jeon, Seung-Yun Baek, Seung-Min Baek, Jang-Young Choi, Yeon-Soo Kim, Wan-Soo Kim, Yong-Joo Kim
Publikováno v:
Sensors, Vol 24, Iss 17, p 5494 (2024)
As interest in eco-friendly work vehicles grows, research on the powertrains of eco-friendly tractors has increased, including research on the development of eco-friendly vehicles (tractors) using hydrogen fuel cell power packs and batteries. However
Externí odkaz:
https://doaj.org/article/6080d97cdefc4ea0a1f6db38852fec68
Publikováno v:
AIP Advances, Vol 14, Iss 2, Pp 025117-025117-6 (2024)
This study presents an approach to optimizing the output power in a magnetically geared generator by employing subdomain modeling and particle swarm optimization. Accordingly, the subdomain analytical method is utilized to obtain the induced voltage,
Externí odkaz:
https://doaj.org/article/5728e1446c6848d0b6bef291e5c2b350
Autor:
Su-Min Kim, Tae-Seong Kim, Woo-Sung Jung, Manh-Dung Nguyen, Yong-Joo Kim, Kyung-Hun Shin, Jang-Young Choi
Publikováno v:
AIP Advances, Vol 14, Iss 2, Pp 025229-025229-6 (2024)
As rare-earth permanent magnet prices continue to fluctuate, interest in non-rare-earth permanent magnet-assisted synchronous reluctance motors (PMa-SynRMs) is increasing. However, non-rare-earth PMa-SynRMs have a multi-layer structure with interior
Externí odkaz:
https://doaj.org/article/6b1438f5c4144afb86df787e63ce7bcb