Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Zhongkun Ji"'
Publikováno v:
Journal of Current Ophthalmology, Vol 35, Iss 4, Pp 401-404 (2024)
Purpose: To investigate the clinical features, radiographic features, treatment strategies, pathological features, and prognosis of orbital cholesterol granuloma (CG). Methods: Twelve patients with orbital CG who were referred to Tianjin Eye Hospital
Externí odkaz:
https://doaj.org/article/db0de1db020a4b5b8cac0ed58bd6248c
Publikováno v:
IEEE Transactions on Power Electronics. 38:8696-8706
Autor:
Yajun Lv, Siwei Cheng, Zhongkun Ji, Xinghong Li, Dong Wang, Yingsan Wei, Xing Wang, Wuqiang Liu
Publikováno v:
IEEE Transactions on Industrial Electronics. :1-10
Publikováno v:
IEEE Transactions on Power Electronics. :1-11
Publikováno v:
IEEE Transactions on Transportation Electrification. 8:1278-1288
This paper presents a simple and nonintrusive method to identify and compensate for current measurement errors in interior permanent magnet synchronous motor (IPMSM) drives. Each IPMSM has a distinct steady-state short-circuit current characteristic.
Publikováno v:
IEEE Transactions on Power Electronics. 36:10504-10513
Switching-frequency vibration caused by pulsewidth modulation (PWM) is a critical shortcoming of permanent magnet synchronous motor (PMSM) drives in certain applications. This article reveals the mechanism for suppressing high-frequency vibration of
Publikováno v:
IEEE Transactions on Power Electronics. 35:7379-7391
This article introduces a new method to analyze electromagnetic forces induced by pulsewidth modulation current harmonics in inverter-fed surface permanent-magnet motors. The concept of the permeance distribution function (PDF) is first introduced wi
Publikováno v:
2019 22nd International Conference on Electrical Machines and Systems (ICEMS).
This paper presents an analytical method for calculating current harmonics of PMSMs fed by three-level NPC H-bridge inverters by combining the 3-D model of the PWM pulses with PMSM state equations. The accuracy of the proposed analytical model is val
Publikováno v:
AIP Advances, Vol 13, Iss 3, Pp 035305-035305-11 (2023)
An innovative numerical prediction method of flow-induced noise is implemented to overcome the defect that the traditional acoustic analogy method cannot reflect the interaction between turbulence vortex and sound. The classical cylindrical–airfoil
Externí odkaz:
https://doaj.org/article/e2822c8da3f3420dbcbf9ed6d3443712
Publikováno v:
Journal of Marine Science and Engineering, Vol 10, Iss 3, p 378 (2022)
Ducted propeller is a kind of special propeller widely used in unmanned underwater vehicles, its flow characteristics and hydrodynamic noise are very important for marine environmental protection and equipment concealment. The hybrid techniques based
Externí odkaz:
https://doaj.org/article/383e73fd859c4f86af2020771715fc14