Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Junghwan Chang"'
Publikováno v:
Case Studies in Thermal Engineering, Vol 49, Iss , Pp 103248- (2023)
This research proposes a bi-directional electromagnetic-thermal coupled analysis model based on node-to-node data transfer for a totally enclosed air over (TEAO) permanent magnet synchronous motor (PMSM) for a high-speed train (HST) distributed tract
Externí odkaz:
https://doaj.org/article/ea198bff6e1b4f7ea3296d01f0b69964
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 14623-14642 (2022)
This paper presents a critical review of traction motors used for distributed traction (DT) applications in high-speed railways (HSR). The motor topologies that can be used for DT-HSR are presented. The advantages and disadvantages of each motor in t
Externí odkaz:
https://doaj.org/article/9dfa26d85b6a4c9e8936f36c00ea1bdc
Publikováno v:
IEEE Access, Vol 10, Pp 28725-28738 (2022)
The aim of this proposed work is to develop a computationally efficient and accurate AC winding loss analysis model for the traction motors for use in high-speed railways (HSRs). The goal of the model is to be able to study AC winding loss under both
Externí odkaz:
https://doaj.org/article/f951856b54a840589275fc1657f05c5b
Publikováno v:
IEEE Access, Vol 10, Pp 33616-33627 (2022)
Coaxial Magnetic Gear (CMG) has unstable dynamic characteristics by hunting or pull-out action of the output rotor when the load or speed are changed, unlike traditional mechanical gears. These dynamic characteristics need to be improved in order to
Externí odkaz:
https://doaj.org/article/5bf0224b6b1144518137a517e2023e43
Autor:
Sarbajit Paul, Junghwan Chang
Publikováno v:
CES Transactions on Electrical Machines and Systems, Vol 5, Iss 2, Pp 143-151 (2021)
Model order reduction (MOR) is considered as a good alternative to reduce the computational scale for electro-magnetic problems. The aim of this work is to introduce the use of dynamic mode decomposition (DMD) as a promising tool for MOR to analyze i
Externí odkaz:
https://doaj.org/article/a3817e77e1e7488b95af372c86b56e96
Autor:
Homin Shin, Junghwan Chang
Publikováno v:
Applied Sciences, Vol 10, Iss 7, p 2456 (2020)
The doubly fed magnetic geared motor, which has dual AC windings, can be operated with different frequencies in the inner and outer windings. However, the inner and outer windings have different numbers of pole pairs to meet the pole combination deri
Externí odkaz:
https://doaj.org/article/cb1848ea6b664465ba45d6df61ba9a1f
Autor:
Sarbajit Paul, Junghwan Chang
Publikováno v:
Sensors, Vol 15, Iss 10, Pp 26694-26708 (2015)
A new method to detect the mover position of a linear motor is proposed in this paper. This method employs a simple cheap Hall Effect sensor-based magnetic sensor unit to detect the mover position of the linear motor. With the movement of the linear
Externí odkaz:
https://doaj.org/article/da4930521f014c5891363d0fc896d6c9
Autor:
Daekyu Jang, Junghwan Chang
Publikováno v:
Energies, Vol 12, Iss 5, p 897 (2019)
This paper proposes a design method for the flux modulation poles (FMPs) formed on the stator of surface-mounted permanent magnet vernier machines (SPMVM) considering the winding configurations. In three types of the SPMVM with the different winding
Externí odkaz:
https://doaj.org/article/bfba43b8eb7d4fe2a9ee6cdd7e6be980
Autor:
Homin Shin, Junghwan Chang
Publikováno v:
Energies, Vol 11, Iss 10, p 2564 (2018)
The magnetic geared motor, which has improved torque density because of the magnetic gearing effect, has been researched. However, its narrow operating region due to the operating mechanism by the magnetic gearing effect and field flux by the PM is a
Externí odkaz:
https://doaj.org/article/18d82b159c9740c18e06d9124520b8aa
Autor:
Daekyu Jang, Junghwan Chang
Publikováno v:
Energies, Vol 10, Iss 10, p 1551 (2017)
This paper presents a novel approach to determine geometric shapes of flux modulation poles (FMPs) by using the analytical equations for flux density distribution due to armature windings. The magnetic field by the windings is modulated by the FMPs.
Externí odkaz:
https://doaj.org/article/d302687f17ee4d62bec0f22499d87b04