Browsing 09 Engineering by Author "Qiu Jie"

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Browsing 09 Engineering by Author "Qiu Jie"

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  • Analysis of Transient Overvoltage in 220 kV Saturated Core HTS FCL 
    Xiao Hongli; Qiu Jie; Wang Shuhong; Zhang Qiuhui; Gong Weizhi; Xin Ying; Zhu Jianguo; Guo Youguang (IEEE, 2011)
    Saturated Core High Temperature Superconducting (HTS) Fault Current Limiter (FCL) is one kind of limiters that can work effectively on short-circuit current limitation. In this paper, an equivalent circuit model depending ...
  • Cogging Torque Reduction Of Bldc Motor Using Level Set Based Topology Optimization Incorporating With Triangular Finite Element 
    Meng Xiangjun; Wang Songnian; Qiu Jie; Zhu Jianguo; Guo Youguang (IOS Press, 2010)
    Cogging torque in permanentmagnet brushless DC (BLDC) motor causes torque and speed ripples, as well as acoustic noise and vibration, especially in low speed and direct drive applications. In this paper, the stator core ...
  • Current Distribution Analysis for High Temperature Superconducting Cable Considering Hysteresis Characteristics 
    Wang Shuhong; Qiu Jie; Liu Xinying; Wang Zhixuan; Zhu Jianguo; Guo Youguang; Lin Zhi Wei (Jack); Wang Yi; Xu Wei (IOS Press, 2010)
    This paper presents a hysteresis model for TypeII high temperature superconductor (HTS) by using simplified Preisach Model, in which the Preisach distribution function μk (alpha, beta) is determined only based on the B ...
  • Design Optimization of an Interior-type Permanent Magnet BLDC Motor using PSO and Improved MEC 
    Fang Xu; Wang Shuhong; Qiu Jie; Zhu Jianguo; Guo Youguang; Yang Xiaofeng; Wang Zhenyu; Sun Yingke; Ren Zhe; Zhang Jiunan (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2007)
    In this paper, an improved magnetic equivalent circuit (MEC) is applied to calculate the nonlinear magnetic field in an interior-type permanent-magnet (IPM) brushless DC (BLDC) motor. Compared with the finite element ...
  • Development of Finite Element Analysis Package for Induction Machines 
    Wang Shuhong; Guo Ningning; Ren Zhe; Qiu Jie; Zhu Jianguo; Guo Youguang; Wang Yi (University of New South Wales, 2008)
    In this paper, a software package of finite element (FE) analysis for induction machines is presented. The back-EMF in windings is expressed by magnetic vector potential, which is used to couple with transient finite clement ...
  • Optimization for capacitor-driven coilgun based on equivalent circuit model and genetic algorithm 
    Guo Liuming; Guo Ningning; Wang Shuhong; Qiu Jie; Zhu Jianguo; Guo Youguang; Wang Yi (IEEE, 2009)
    This paper presents an analysis and optimal design of a capacitor-driven inductive coilgun. The electromagnetic FEA model of the capacitor-driven inductance coilgun is established and simulated by using Ansoft. In order ...
  • Robust Multilevel Optimization of PMSM Using Design for Six Sigma 
    Meng Xiangjun; Wang Do Not Use Shuhong; Qiu Jie; Zhang Qiuhui; Zhu Jianguo; Guo Youguang; Liu Dikai (IEEE, 2011)
    In this paper, a robust optimization method based on design for six sigma (DFSS) is combined to the optimization of a surface mounted permanent synchronous machine (PMSM) by using multilevel genetic algorithm (MLGA). First, ...
  • Robust Optimization in HTS Cable Based on DEPSO and Design for Six Sigma 
    Wang Shuhong; Liu Xinying; Qiu Jie; Zhu Jianguo; Guo Youguang; Lin Zhi Wei (Jack) (IEEE, 2008)
    The non-uniform AC current distribution among the multi-layer conductors in a high-temperature superconducting (HTS) cable reduces the current capacity and increases the AC loss. In this paper, Particle swarm optimization ...
  • Robust Optimization in HTS Cable Based on Design for Six Sigma 
    Liu Xinying; Wang Shuhong; Qiu Jie; Zhu Jianguo; Guo Youguang; Lin Zhi Wei (Jack) (IEEE, 2008)
    The nonuniform ac current distribution among the multilayer conductors in a high-temperature superconducting (HTS) cable reduces the current capacity and increases the ac loss. Various numerical simulation techniques and ...
  • Simulation and Optimization of Six-stage Electromagnetic Coilgun 
    Guo Liuming; Wang Shuhong; Guo Ningning; Qiu Jie; Zhu Jianguo; Guo Youguang; Wang Yi; Xu Wei (IOS Press, 2010)
    This paper presents a method based on Current Hoop Model for the analysis and design of induction coilgun. The cylindrically symmetric armature is subdivided into concentric hoops with diverse rectangular crosssections, ...
  • Transient Simulation And Analysis For Saturated Core High Temperature Superconducting Fault Current Limiter 
    Zhao C; Wang Songnian; Qiu Jie; Zhu Jianguo; Guo Youguang; Gong Wz; Cao Zj (IEEE-inst Electrical Electronics Engineers Inc, 2007)
    In this paper, the transient performance of a magnetic core fault current limiter (FCL) saturated by high temperature superconducting (HTS) dc bias winding is investigated by using both 3-D field-circuit coupled simulation ...
  • Transient Simulation of Electrical Machines Using Field-Circuit Coupled Method 
    Ren Zhe; Wang Shuhong; Qiu Jie; Xu Fang; Zhu Jianguo; Guo Youguang; Chen Yan (Japanese Society of Applied Electromagnetics and Mechanics, 2009)
    In this paper, the transient simulations of electrical machines using a magnetic field-circuit coupled approach with diverse drive circuit topologies and two-dimensional finite-clement analysis arc described. t\ convenient ...