Search Results - "Chu, W. Q."

Average Torque Separation in Permanent Magnet Synchronous Machines Using Frozen Permeability by Chu, W. Q., Zhu, Z. Q.

“…This paper investigates the average torque separation in permanent magnet (PM) synchronous machines. In order to accurately separate the PM and armature…”
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Simplified Analytical Optimization and Comparison of Torque Densities Between Electrically Excited and Permanent-Magnet Machines by Chu, W. Q., Zhu, Z. Q., Chen, J. T.

“…This paper presents the simplified analytical optimization and comparison between electrically excited (EE) and permanent-magnet (PM) machines in terms of…”
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Influence of Flux Gaps on Electromagnetic Performance of Novel Modular PM Machines by Li, G. J., Zhu, Z. Q., Chu, W. Q., Foster, M. P., Stone, D. A.

“…In order to simplify manufacture processes and improve fault-tolerant capabilities, modular electrical machines, especially the ones with segmented stators,…”
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Investigation of Torque Ripples in Permanent Magnet Synchronous Machines With Skewing by Chu, W. Q., Zhu, Z. Q.

“…This paper investigates the influence of skewing on torque ripples, including the electromagnetic (EM) torque ripple, and the cogging torque, in permanent…”
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Novel Dual-Phase-Shift Control With Bidirectional Inner Phase Shifts for a Dual-Active-Bridge Converter Having Low Surge Current and Stable Power Control by Liu, X., Zhu, Z. Q., Stone, David A., Foster, Martin P., Chu, W. Q., Urquhart, Iain, Greenough, James

“…To transmit constant powers particularly at light load, the isolated dual active bridge (DAB) with conventional dual-phase-shift (DPS) control exhibits large…”
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A New Iron Loss Model for Temperature Dependencies of Hysteresis and Eddy Current Losses in Electrical Machines by Shaoshen Xue, Jianghua Feng, Shuying Guo, Jun Peng, Chu, W. Q., Zhu, Z. Q.

“…In this paper, the different temperature dependencies of hysteresis and eddy current losses of non-oriented Si-steel laminations are investigated. The measured…”
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On-Load Cogging Torque Calculation in Permanent Magnet Machines by Chu, W. Q., Zhu, Z. Q.

“…This paper investigates the on-load cogging torque calculation in permanent magnet (PM) machines. The vast majority of existing methods for calculating the…”
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Reduction of On-Load Torque Ripples in Permanent Magnet Synchronous Machines by Improved Skewing by Chu, W. Q., Zhu, Z. Q.

“…Skewing is one of the most widely used methods to reduce the torque ripples. However, it was reported that the on-load torque ripple was not always reduced by…”
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Iron Loss Model Under DC Bias Flux Density Considering Temperature Influence by Shaoshen Xue, Jianghua Feng, Shuying Guo, Zhichu Chen, Jun Peng, Chu, W. Q., Huang, L. R., Zhu, Z. Q.

“…In this paper, the temperature dependencies of iron loss under different flux densities, frequencies, and dc bias flux densities are systematically…”
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Iron Loss Model for Electrical Machine Fed by Low Switching Frequency Inverter by Shaoshen Xue, Jianghua Feng, Shuying Guo, Zhichu Chen, Jun Peng, Chu, W. Q., Xu, P. L., Zhu, Z. Q.

“…In this paper, the investigation is focused on the iron loss prediction for electrical machines fed by low switching frequency inverter. An improved iron loss…”
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Investigation on Operational Envelops and Efficiency Maps of Electrically Excited Machines for Electrical Vehicle Applications by Chu, W. Q., Zhu, Z. Q., Jian Zhang, Xu Liu, Stone, D. A., Foster, M. P.

“…In this paper, the operational envelops and efficiency maps of an electrically excited (EE) machine with/without employing flux weakening control via armature…”
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Iron Loss Calculation in Permanent Magnet Machines Under Unconventional Operations by Chu, W. Q., Ziqiang Zhu, Xu Liu, Stone, David A., Foster, Martin P.

“…This paper investigates the iron loss calculation of permanent magnet (PM) machines undertaking unconventional operations, where the high-frequency alternating…”
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Quantitative comparison of electromagnetic performance of electrical machines for HEVs/EVs by Z. Q. Zhu, W. Q. Chu, Y. Guan

“…In this paper, various types of sinusoidal-fed electrical machines, i.e. induction machines (IMs), permanent magnet (PM) machines, synchronous reluctance…”
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Power Electronic Transformer-Based Railway Traction Systems: Challenges and Opportunities by Jianghua Feng, Chu, W. Q., Zhixue Zhang, Zhu, Z. Q.

“…In this paper, power electronic transformer (PET)-based railway traction systems are comprehensively reviewed according to the unique application features and…”
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Analysis of Torque Production in Variable Flux Reluctance Machines by Huang, L. R., Feng, J. H., Guo, S. Y., Shi, J. X., Chu, W. Q., Zhu, Z. Q.

“…In this paper, the torque production mechanism of variable flux reluctance machines (VFRMs) is investigated. Initially, based on an analytical instantaneous…”
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A Wound Field Switched Flux Machine With Field and Armature Windings Separately Wound in Double Stators by Zhu, Z. Q., Wu, Z. Z., Evans, D. J., Chu, W. Q.

“…In this paper, a double stator (DS) wound field (WF) switched flux (SF) (DS-WFSF) machine is proposed. In the DS-WFSF machine, field and armature windings are…”
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Optimal split ratio and torque comparison of surface-mounted permanent magnet machines having inner or outer rotor by Chu, W.Q, Zhu, Z.Q

“…Permanent magnet (PM) machines are widely used in many applications. They can have inner (IR) or outer rotor (OR). These two configurations are optimized…”
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Akt1/PKBα Is Required for Normal Growth but Dispensable for Maintenance of Glucose Homeostasis in Mice by Cho, Han, Thorvaldsen, Joanne L., Chu, Qingwei, Feng, Fei, Birnbaum, Morris J.

“…The serine-threonine kinase Akt, also known as protein kinase B (PKB), is an important effector for phosphatidylinositol 3-kinase signaling initiated by…”
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Insulin Resistance and a Diabetes Mellitus-Like Syndrome in Mice Lacking the Protein Kinase Akt2 (PKBβ) by Cho, Han, Mu, James, Kim, Jason K., Thorvaldsen, Joanne L., Chu, Qingwei, Crenshaw, E. Bryan, Kaestner, Klaus H., Bartolomei, Marisa S., Shulman, Gerald I., Birnbaum, Morris J.

“…Glucose homeostasis depends on insulin responsiveness in target tissues, most importantly, muscle and liver. The critical initial steps in insulin action…”
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Influence of local magnetic saturation on iron losses in interior permanent magnet machines by Zhu, Z. Q., Wu, D., Chu, W. Q.

“…Interior PM (IPM) machines can have severe local magnetic saturation especially in the rotor iron region above the PMs and the stator tooth-tips. In this…”
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