28 hasil untuk "Heyun Lin"
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Artikel Jurnal Teks lengkap
Modular Permanent Magnet Synchronous Machine with Low Space Harmonic Content
Modularity technique is desirable in large permanent magnet synchronous machines (PMSMs) because it facilitates manufacture, assembly, and maintenance. Although the PMSMs with fractional-slot concentrated windings (FSCWs) allow their stators to be modularized, they usually suffer from high…
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Artikel Jurnal
A Novel 24-Slot/10-Pole Dual Three-Phase Fractional-Slot Overlapped Winding for Low Non-Working Space Harmonics and Stator Modularization
This paper proposes a novel 24-slot/10-pole dual three-phase (DTP) fractional-slot overlapped winding, which can simultaneously achieve the goals of low non-working space harmonics and stator modularization. Moreover, the proposed winding inherits the majority of the merits of conventional…
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Artikel Jurnal Teks lengkap
Comparative Study of Consequent-Pole Switched-Flux Machines with Different U-Shaped PM Structures
This paper presents a comparative study of two consequent-pole switched-flux permanent magnet (CP-SFPM) machines with different U-shaped PM arrangements. In order to address the flux barrier effect in a sandwiched SFPM machine, two different alternate U-shaped PM designs are introduced to improve…
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Artikel Jurnal
Comparative study of stator consequent‐pole permanent magnet machines
Abstract A comparative investigation is made of stator consequent‐pole (SCP) machines with different permanent magnet (PM) arrangements. Compared with conventional surface‐mounted PM (SPM) configurations, SCP configurations produce more orders of air‐gap field harmonics. Due to asymmetrical PM…
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Artikel Jurnal
Recent advances in variable flux memory machines for traction applications: A review
This paper overviews the recent advances in variable flux memory machines (VFMMs) for traction applications with particular reference to newly emerged machine topologies and related control strategies. Due to the use of flux memorable low coercive force (LCF) magnets, the air-gap flux of VFMM can…
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Artikel Jurnal
Performance improvement of a novel sandwiched permanent magnet switched flux machine with flux barriers
This paper proposes a novel sandwiched permanent magnet switched flux (SPM-SF) machine with flux barrier to improve the electromagnetic performance. The machine topologies and operating principle are given firstly. Then, the basic electromagnetic characteristics, including open-circuit performance…
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Artikel Jurnal
Estimation of DOA for Noncircular Signals via Vandermonde Constrained Parallel Factor Analysis
We provide a complete study on the direction-of-arrival (DOA) estimation of noncircular (NC) signals for uniform linear array (ULA) via Vandermonde constrained parallel factor (PARAFAC) analysis. By exploiting the noncircular property of the signals, we first construct an extended matrix which…
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Artikel Jurnal
Investigation of the over-load unintentional remagnetization effect in series hybrid magnet variable flux memory machine
Variable flux memory machines (VFMMs) have become a research hotspot due to their adjustable air-gap flux with the employment of low coercive force (LCF) permanent magnets (PMs). Series hybrid magnet VFMMs (SHM-VFMMs) utilizing series-magnetic-circuit high coercive force (HCF) and LCF PMs are…
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Artikel Jurnal
Magnetic stability of low corrective force PM in series hybrid magnet memory machine under inverter open-circuit fault
Variable flux memory machine (VFMM) can dynamically adjust its air-gap magnetic field by changing the magnetization states of the employed low corrective force (LCF) permanent magnets (PMs). Due to the demagnetization risk of LCF PMs under armature current, it is necessary to analyze their magnetic…
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Artikel Jurnal
Influence of magnet eddy current on magnetization characteristics of variable flux memory machine
In this paper, the magnet eddy current characteristics of a newly developed variable flux memory machine (VFMM) is investigated. Firstly, the machine structure, non-linear hysteresis characteristics and eddy current modeling of low coercive force magnet are described, respectively. Besides, the PM…
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Artikel Jurnal
A variable-mode stator consequent pole memory machine
In this paper, a variable-mode concept is proposed for the speed range extension of a stator-consequent-pole memory machine (SCPMM). An integrated permanent magnet (PM) and electrically excited control scheme is utilized to simplify the flux-weakening control instead of relatively complicated…
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Artikel Jurnal
Edge-efficient AI for acoustic channel estimation in resource-constrained subsurface IoT systems
Abstract Resource-constrained subsurface Internet of Things (IoT) systems require artificial intelligence (AI) solutions that are not only accurate, but also efficient and robust under limited sensing, computation, and communication capabilities. In underground and other opaque heterogeneous…
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Artikel Jurnal
Second-Order Sliding Mode-Based Direct Torque Control of Variable-Flux Memory Machine
The variable-flux memory machine (VFMM) exhibits high efficiency over a wide speed range because its airgap magnetic flux can easily be regulated by varying the magnetization state (MS) of the employed low coercivity force permanent magnets. This paper proposes a second-order sliding mode…
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Artikel Jurnal Teks lengkap
Comparative Analysis of Parallel Hybrid Magnet Memory Machines with Different PM Arrangements
This paper presents a comparative analysis of two parallel hybrid magnet memory machines (PHMMMs) with different permanent magnet (PM) arrangements. The proposed machines are both geometrically characterized by a parallel U-shaped hybrid PM configuration and several q-axis magnetic barriers. The…
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Artikel Jurnal Teks lengkap
Torque Ripple Optimization of a Novel Cylindrical Arc Permanent Magnet Synchronous Motor Used in a Large Telescope
This paper proposes the use of a novel cylindrical arc permanent magnet synchronous motor (CAPMSM) in a large telescope, which requires high positioning accuracy and low torque ripple. A 2D finite element method was used to analyze the cogging torque of the CAPMSM. The CAPMSM can be an alternative…
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Artikel Jurnal Teks lengkap
Speed Range Extension of Dual-Stator PM Machine Using Multi-Mode Winding Switching Strategy
In this paper, a novel winding switching (WS) strategy is proposed for the speed range extension of a dual-stator permanent magnet machine (DS-PMM), which can achieve simple and effective dynamic mode conversion over an entire operating region. Two types of WS circuits with an inverter and two…
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Artikel Jurnal
Design and analysis of a flux intensifying permanent magnet embedded salient pole wind generator
This paper presents an improved flux intensifying permanent magnet embedded salient pole wind generator (FI-PMESPWG) with mirror symmetrical magnetizing directions permanent magnet (PM) for improving generator’s performances. The air-gap flux densities, the output voltage, the cogging torque and…
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Artikel Jurnal Teks lengkap
A Novel Magnet-Axis-Shifted Hybrid Permanent Magnet Machine for Electric Vehicle Applications
This paper proposes a novel magnet-axis-shifted hybrid permanent magnet (MAS-HPM) machine, which features an asymmetrical magnet arrangement, i.e., low-cost ferrite and high-performance NdFeB magnets, are placed in the two sides of a “▽„-shaped rotor pole. The proposed magnet-axis-shift (MAS)…
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Artikel Jurnal
A Parallel Consequent Pole Reluctance Machine With Bipolar Coil Flux-Linkage
This paper proposes a novel parallel consequent pole reluctance machine (CPRM) by introduc- ing dual heteropolar stators and shifted rotors in the axial direction. The proposed machine is geometrically similar to traditional switched reluctance machine (SRM), but with biased permanent magnets (PMs)…
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Artikel Jurnal Teks lengkap
Analysis and Optimization Design of a Brushless Power Feedback PM Adjustable Speed Drive with Bilayer Wound Rotor
A novel brushless power feedback permanent magnet adjustable speed drive (BLPF-PMASD) is developed for the energy-saving of a large power electrical machine drive system in this paper. It can transfer the slip power between the input and output shafts to a stator and then transmit it back to the…