A5100717395- Electric Motor Design and Analysis
- Sensorless Control of Electric Motors
- Magnetic Bearings and Levitation Dynamics
- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Iterative Learning Control Systems
- Magnetic Properties and Applications
- Tribology and Lubrication Engineering
- Microgrid Control and Optimization
- Control Systems in Engineering
- Electric and Hybrid Vehicle Technologies
- Frequency Control in Power Systems
- Adaptive Control of Nonlinear Systems
- Advanced Algorithms and Applications
- Industrial Technology and Control Systems
- Advancements in Battery Materials
- Advanced Combustion Engine Technologies
- Wireless Power Transfer Systems
- Gear and Bearing Dynamics Analysis
- Structural Analysis and Optimization
- Advanced Control Systems Design
- HVDC Systems and Fault Protection
- Mechanical Engineering and Vibrations Research
- Electric Power Systems and Control
- Advanced battery technologies research
Harbin Institute of Technology
2013-2024
Xi'an Jiaotong University
2023
Northeastern University
2021-2023
Guilin University of Electronic Technology
2022-2023
Donghua University
2022
Shenyang Jianzhu University
2020-2021
ORCID
2019
Nanjing University of Aeronautics and Astronautics
2013
This article presents a two-degree-of-freedom (2DOF) H speed control structure for permanent magnet synchronous motors (PMSMs). consists of three parts: an disturbance observer (DOB), feedback controller, and feedforward controller. First, the <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">∞</sub> problem, controller design method PMSM are presented. The stability theory, solution introduced. Second, is designed as tracking problem to estimate...
Optimized equilibrium structures of Li 2 Sn@PI/PCS900-P and (a) Sn@PR/PCS900-P (b), a schematic illustration the accelerated nucleation conversion polysulphides by nitrogen phosphorus atoms (c).
The deadbeat predictive current control (DPCC) of permanent-magnet synchronous motors (PMSMs) is well known for its simple structure and fast dynamic. However, it sensitive to parameter mismatches system delays, which becomes more serious at the low switching frequency. To handle such problems, this article proposes an accurate method based on exact model surface-mounted PMSM in a stationary two-phase frame with moving horizon estimator (MHE). motor obtained from differential equations,...
The Forward Euler method is well known for its simplicity and ease of implementation in Permanent Magnet Synchronous Motor (PMSM) controls. However, it introduces significant errors, which becomes more severe when establishing the discrete-time model a high-order system high-speed PMSM with LCL filter. Traditional discrete methods, have smaller are too complex difficult to apply systems. To address these issues, this paper proposes sensorless control surface-mounted filter based on...
This paper presents a finite element method approach for motor thermal analysis. Specifically, the 2-D temperature field model of slotless tubular permanent magnet linear is established. The heat convection coefficients mover are then calculated based on fluid focuses winding to obtain an accurate gradient distribution and highest region from high overload motor. Therefore, improved equivalent layered ring-shaped particularly applied simulation As verification, rise accordingly, results...
This paper presents a fast predictive current trajectory strategy for permanent magnet synchronous motors (PMSMs) at voltage limit. The hexagon obtained from the of inverter represents region that currents can reach in next switching periond. nearest avaliable point to reference is solved by geometrical method on plane. output proposed algorithm divided into four cases according position points. combines FCS-MPC and DPCC, has merits both also dynamic limits. In order increase robustness...
To enable the realization of weak magnetic field at level several nanotesla, a magnetically shielded room (MSR) is required to create space with residual below 1 nT. Since by inner shielding shells very low, permeability materials in this range measured. As gaps between ferromagnetic material strips wall lead considerable reduction factor, new numerical model evaluate equivalent discontinuous layers proposed and demonstrated experimentally. Based on property lower normal range, improved...
The rotor systems are the critical components of many rotational machines. dynamic stiffness supporting structure affects characteristics system significantly. effect can’t be overlooked for obtaining accurate characteristics. judgment index influence (DSI) is proposed in this paper to evaluate degree on model considering supports established, and expression DSI given. Then Campbell diagrams corresponding values different parameters under discussed analyzed. effectiveness verified by...
Oxygen saturation is a crucial indicator in the management of various diseases and preoperative diagnosis, detection oxygen content valuable guiding clinical treatment. However, as classical dominant strategies, current photoelectric oximeters electrochemical-based blood gas analyzers often suffer from significant interindividual variation poor compliance, respectively. In recent years, wearable microneedles (MNs) for analyzing biomarkers interstitial fluid (ISF) have received great...
In order to improve the identification accuracy and tracking performance of parameter estimation, two improvements on model reference adaptive system (MRAS) based on-line estimation method with VSI nonlinearity compensation are proposed for permanent magnet synchronous machines (PMSMs) in this paper. Firstly, stator resistance inductance equations derived separately under stationary phase frame (αβ-axis). The stability is analyzed Lyapunov theorem. Secondly, exponent form saturation...
Most methods to estimate the rotor position of permanent magnetic synchronous motor (PMSM) suffer from parameter, which are difficult be applied due complicated algorithm. This paper presents a new approach PMSM based on sliding mode observer (SMO). The SMO makes use error between estimated current and measurement current. Back-EMF is obtained by low pass filter(LPF) . angle can close-loop system in order improve accuracy reduce noise. direct integration speed. pure eliminated novel way....
The elastic ring is widely used in support structures of aero-engine because its simple structure and convenient manufacturing. In this paper, two models, 3D 2D are proposed, where the fillets between bulges considered. model more efficient for calculation stiffness characteristics. can be to obtain maximum stress position axial direction. Then experimental testing carried out verify accuracy effectiveness proposed models. Based on nonlinearity critical load found first time, which determine...
As state observer has the advantages of simple structure and low noise, this paper proposes a sensorless control method based on for permanent magnet synchronous motor (PMSM) analyzes impact parameter errors. The is firstly designed PMSM, frequency pre-warping bilinear transform adopted simultaneously in discretization observer. Then, observation errors are analyzed when stator resistance error or inductance exists. Finally, Simulation results presented, verify effectiveness paper's design analysis.
Most methods to estimate the rotor position of permanent magnetic synchronous motor (PMSM) suffer from parameters, which are difficult be applied due complicated algorithm. This paper presents a sliding mode observer (SMO) PMSM. The SMO makes use error between estimated current and measured current. And phase lag, is caused by low pass filter, compensated in proper way. convergence guaranteed. A novel speed used improve systematic stability. High performance sensorless drive PMSM based on...
This paper investigates a method to increase the energy economy of motors for an electric vehicle (EV) traction system. The low torque region EV motor is frequently used in everyday urban driving. Pulse-width modulation (PWM) carrier harmonic loss accounts high percentage total this region. reveals relationship between fundamental and iron current permanent magnet synchronous (PMSM) by double Fourier integral analysis builds global model PMSM which considers about both loss. Based on model,...
Accurate motor parameters are the basic requirements for realizing high-performance control technology of permanent magnet synchronous motors (PMSM). To maintain high performance in different operation mode, it is necessary to adjust with conditions. However, on-line parameter identification hardly have better precision. A method surface-mounted (SPMSM) based on extended Kalman filter proposed solve this problem. By using scheme, accuracy and speed can be effectively improved. In paper,...
Aiming at drive system with high performance and reliability for electric vehicle application, a novel 12-phase permanent magnetism synchronous motor (PMSM) four independent 3-phase star-connected windings is designed. By analyzing the mathematical model, units parallel operation proposed. In single Field Programmable Gates Array (FPGA) chip, all control algorithms including Space Vector PWM (SVPWM), PID, coordinate transform, current loop, speed loop so on are implemented, an digital unit...
This paper presents a novel means of sensorless drive the winding segmented permanent magnet linear motor (WS-PMLM). In order to solve problem deviation position and speed estimation mover caused by sharp changes inductance, flux linkage, back electromotive force (EMF) between segments WS-PMLM, method for compound back-EMF is proposed eliminate blind spot intersegment estimation. terms estimation, full-order observer based on dynamics equation proposed, configuration feedback gain analyzed,...
The 3-Level Modulation Method has been widely studied since the topology is mature and easy to apply industrial field. three-phase half-bridge inverter used in high-voltage middle-voltage level reduce device stress, which also suit for application of high-speed motor driver system due small electric parameter critical stress. space vector pulse width modulation (SVPWM) both 2-L 3-L topology. However, implementation procedures differ significantly number vary considerably. In this paper, a...