A5114752551- Electric Motor Design and Analysis
- Magnetic Bearings and Levitation Dynamics
- Magnetic Properties and Applications
- Sensorless Control of Electric Motors
- Induction Heating and Inverter Technology
- Power Systems and Renewable Energy
- Multilevel Inverters and Converters
- Superconducting Materials and Applications
- Electric and Hybrid Vehicle Technologies
- Ionosphere and magnetosphere dynamics
- Environmental Sustainability in Business
- Magnetic confinement fusion research
- Recycled Aggregate Concrete Performance
- Service and Product Innovation
- Smart Grid and Power Systems
- Innovation and Socioeconomic Development
- Organizational and Employee Performance
- Solar and Space Plasma Dynamics
- Advanced Computational Techniques and Applications
- Meteorological Phenomena and Simulations
- Corporate Social Responsibility Reporting
- Machine Fault Diagnosis Techniques
Jiangsu University
2019-2025
Shanghai Ocean University
2025
Dongguan University of Technology
2021
Shanghai University of Finance and Economics
2021
State Grid Corporation of China (China)
2019
Hunan City University
2012
PLA Army Service Academy
2005
In this article, an airgap-harmonic-orientated design method is proposed, where the airgap harmonics are newly acted as effective bridge between three key elements of permanent magnet sources, modulators, or armature windings and motor performances. proposed method, play couple roles objectives variables, which not only served variables for performances, but also considered parameters. For extensive investigation, a V-shape flux-modulated permanent-magnet (V-FMPM) selected example, has...
The magnetic coupling phenomenon widely exists in the type of double rotor motor, which is difficult to be eliminated completely due interactions between two layers air-gap fields a compact geometry structure. This article studies perspective harmonic groups, where novelty propose concept positive harmonics and negative one. And, flux-switching PM machine chosen as research subject. Then, begins with analytical investigation modulation principle considering coupling, group factor defined....
In this article, an optimization design method of power factor is proposed for vernier permanent magnet (VPM) machine, in which the key to analyze and investigate from perspective air-gap flux harmonic modulation. To improve efficiency, harmonics are analyzed serve as crucial bridge between machine geometry. It noted that, during operation VPM more attention required low-speed area. Based on popular new European driving cycle electric vehicles, three conditions chosen design. For systematic...
This study investigates the relationship between supervisory behavior, conflict management strategies, and sustainable employee performance inquires mediating effect of strategies. Data were collected from SMEs manufacturing industry Pakistan. The significance model was assessed using PLS-SEM (structural equation modeling). findings revealed a positive significant behavior behavior. Similarly, strategies had on adds in current literature as critical predictor two ways. Firstly, this...
In this article, the suppression mechanism of torque ripple for flux-switching permanent magnet (FSPM) motor is investigated. According to flux modulation principle, generation principle harmonics analyzed, which generated by interaction between radial and tangential airgap harmonics. Based on analysis, a method suppress FSPM proposed, where are newly applied be bridge establish relationship among ripple, harmonic components, key design parameters. To confirm effectiveness proposed method,...
To broaden the speed regulation range and enhance capability of output torque, a dual-subregion rotor design permanent magnet hub motor is newly proposed. By employing design, tactfully designed into two regions, named near-permanent-magnet (near-PM) region near-airgap (near-AG) region, respectively. In near-PM method magnetic flux applied to weaken excitation field range. While, in near-AG low-speed high-torque capability, concept editing-airgap introduced improve distribution airgap...
In this article, a robust-oriented optimization design method is proposed for the permanent magnet (PM) motors. The key of to introduce concept parameter fluctuation into motor process, which aims at solving uncertainties during manufacturing process. process purposely divided two layers. Layer I, except performance objectives, influence parameters on performances also served as objectives obtain deterministic structure. II, allowable manufacture errors caused by and qualification rate with...
In this article, a new method of enhancing the anti-demagnetization capability based on modulation principle is proposed for less-rare-earth permanent-magnet synchronous motor (PMSM). By means analytical method, relationship between demagnetization effect and air gap flux density, calculated by magnetic motive force (MMF) permeance, established. implementing design fundamental harmonic modulation, PMSM can be improved. Using finite-element electromagnetic performances initial optimal are...
Based on multiple micro databases involving Chinese manufacturing enterprises and World Input-Output Database, this article investigates the impact of China’s servitization export technological sophistication from 2000 to 2010. The results show that has an inverted U-shaped sophistication. From perspective heterogeneity at enterprise level industry level, for mixed trade enterprises, central western located domestic foreign knowledge-intensive industries, nonlinear is in promotion range....
In this article, an objective-layered optimization strategy is proposed and investigated for the magnetic planetary gear (MPG). The key novelty are to comprehensively consider sensitive relationships between objective objective, as well parameter. From this, sensitivity analysis method utilized purposely. According result of analysis, objectives classified into two groups, thus process divided layers. And, it noted that multi-objective genetic algorithm (MOGA) double-side PM shaping...
In this paper, a new low-loss-design method based on MMF harmonics is proposed for flux-switching permanent magnet (FSPM) motor. By analytical method, the relationship between loss and air-gap caused by magneticmotive force (MMF) deduced theoretically. introducing impact factor, correlation designs among PM loss, torque cogging are carried out to realize reduction with comprehensively optimal motor performances. utilizing finite-element electromagnetic performances of initial analyzed...
In this paper, a new multiple flux-modulated permanent magnet (M-FMPM) motor is proposed, where three flux modulations and two modulation forms are implemented to enhance the torque density. Firstly, topology of corresponding multi-flux-modulation theory presented. And thus can be enriched performance also further effectively improved. Then, according proposed geometric model, shape PM artfully designed obtain desirable performance. Based on finite element method (FEM), magnetic...
Permanent magnet synchronous motor (PMSM) is widely used in the field of electric vehicles. The equivalent air gap traditional permanent induction larger, amount excitation potential and extension range speed smaller. hybrid small, ratio short circuit current to rated small. Therefore, weak magnetic performance structure better than that motor. experiment flux-weakening control using additional voltage feedback method shows multiple can reach 4 times. Both theoretical analysis experimental...
Abstract Effect of impurity on edge turbulence was investigated the HL-2A tokamak by using Neon supersonic molecular beam injection (SMBI). For first time, a stationary radiative layer accompanied localized lasting more than 100ms is observed at region ρ=0.7-0.9. This duration much longer SMBI pulse length (1.2ms), indicating that diffusion whole cancelled out convection without spreading during this period. implies reversed from positive to negative density gradient region. reversal could...
Abstract We report the first observation of microtearing mode (MTM) and its interaction with energetic-particle-induced geodesic acoustic (EGAM) in reduction ambient turbulence, leading to improvements energy particle confinements electron cyclotron resonance heating (ECRH) plasma on HL-3 tokamak. MTM, observed magnetic fluctuation spectrum a frequency range 80-120 kHz, is found be driven by temperature gradient. It has been shown that MTM propagates diamagnetic drift direction poloidal...
In this article, a multi-permanent magnet (multi-PM) motor with distributed placement of PMs is proposed, considering different role-plays PMs. The key to propose new concept PM role-play, which can enable perform their specific role for torque quality enhancement, i.e., output effective improvement and ripple suppression. topology the multi-PM derived, roles multiple in air-gap flux density are deduced investigated detail. Then, electromagnetic performance generated by each optimized...
In this paper, an asymmetrical multi-layer flux barriers permanent magnet (AMFB-PM) motor is proposed. The key of study to design the d-q-axis magnetic field reasonably. Firstly, influence d-axis inductance on constant power speed range analyzed. To optimize regulation performance, asymmetric barrier employed adjust saturation degree circuit under flux-weakening state. Additionally, introduction enables directional deflection reluctance torque, thereby enhancing output torque. analysis...
In this paper, the variable leakage flux (VLF) PM motors with three different distributions of barriers are designed, analyzed, and compared. First, a feasible approach realizing variation is discussed to emphasize rotor design barriers, where magnetic resistance purposely introduced. Then, VLF saliency ratio characteristics investigated compared comprehensively, including no-load back-EMF, density distributions, inductances characteristics, torque production ability. By comparison,...
In this paper, the power factor (PF) characteristic for a flux-modulated permanent magnet (FMPM) motor has been analyzed and investigated. To obtain high PF FMPM motor, magnetic source topologies effect is based on principle. Firstly, calculation method of derived, some key parameters affecting are theoretically. Secondly, compared from perspective (MSTs) effect, initial model determined. And designed performances evaluated. Finally, research results show that with surface-embedded PM...
The field-oriented-control algorithm in 60° coordinate system for permanent magnet synchronous motor is described this paper. Field-oriented-control consists of several parts and the expression form reference currents feedback different from traditional methods. value voltage vector directly obtained after current proportional-integral controller. Then speed control realized by controller combined with SVPWM system. Simulation results confirm feasibility FOC
In this paper, a dynamic nonlinear magnetic network model is proposed to predict the electromagnetic performance of double-rotor flux-switching motor (DRFSM) in which general air-gap equivalent considering irregular field distribution double air gaps and variation composition involved. The inner-outer machine back-EMF DRFSM are efficiently predicted by computation model. results validated finite element analysis (FEA) experiments, where good agreements prove accuracy effectiveness