A5024606762- Electric Motor Design and Analysis
- Multilevel Inverters and Converters
- Sensorless Control of Electric Motors
- Magnetic Properties and Applications
- Fault Detection and Control Systems
- Machine Fault Diagnosis Techniques
- Magnetic Bearings and Levitation Dynamics
- Electric and Hybrid Vehicle Technologies
- Advanced Battery Technologies Research
- Microgrid Control and Optimization
- HVDC Systems and Fault Protection
- Advanced DC-DC Converters
- Control Systems and Identification
- High-Voltage Power Transmission Systems
- Non-Destructive Testing Techniques
- Silicon Carbide Semiconductor Technologies
- Advanced Control Systems Optimization
- Advanced Algorithms and Applications
- Supercapacitor Materials and Fabrication
- Stability and Control of Uncertain Systems
- Induction Heating and Inverter Technology
- Metallurgy and Material Forming
- Sensor Technology and Measurement Systems
- Advanced Sensor Technologies Research
- Railway Systems and Energy Efficiency
Anhui University
2016-2025
Southeast University
2010-2020
Yancheng Institute of Technology
2020
University of Duisburg-Essen
2007-2012
Jiangsu University
2012
Institute of Automation
2009
Shaoguan University
2009
A fault-tolerant permanent-magnet traction module is proposed for subway application, which has three different operation modes: normal, isolation, and mode. In normal mode, 2 three-phase synchronous machines (PMSMs) are controlled by three-leg voltage-source inverters (VSIs), respectively. The can output maximum torque reach the velocity. When one leg fails, corresponding PMSM isolated from fault VSI train operates in isolation effort reduced but velocity be maintained under light load....
Interturn fault (ITF) is a common for permanent magnet synchronous machine (PMSM). If the ITF not detected in time, its propagation may result secondary damage, even damage to whole electrical machine. Recently, model predictive control (MPC) has been widely studied PMSM drive system because of simple structure and excellent dynamic performance. However, previous diagnosis methods are mainly focused on vector direct toque systems, few research works specifically...
Open-phase fault (OPF) in the permanent magnet synchronous machine (PMSM) drive system is one of most prevalent failures due to resulting large electromagnetic torque ripples and serious mechanical vibration. To improve reliability PMSM system, several OPF diagnosis methods were studied mainly focused on vector control system. Recently, model predictive (MPC) has been emerging as a popular method for owing its simple structure excellent dynamic performance. However, so far, there are no...
Open-circuit fault is one of the most common faults in permanent-magnet synchronous machine (PMSM) drives. The open-circuit can cause obvious change stator currents PMSM. Hence, previous artificial-intelligence-based-fault diagnosis method mainly relies on samples extracted from currents. However, large sets are required due to variation PMSM operating point, increasing complexity diagnosis. What more, easily affected by noise, decreasing accuracy To solve issues, this article proposes a...
Partial demagnetization fault (PDF) is a common problem for permanent magnet synchronous motor (PMSM). The PMSM usually operates under complex working conditions (dynamic speed and various load), leading to the difficulty in robust PDF diagnosis. Hence, how reliably accurately diagnose has become key issue ensuring its safe operation. To address this issue, diagnosis method proposed based on radial air-gap flux density article. First, <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...
A descriptor system approach is introduced to investigate sensor fault reconstruction and compensation for a class of nonlinear state-space systems with Lipschitz constraints. Letting the term be an auxiliary state vector, augmented constructed. Using linear matrix inequality technique, estimator designed plant. Accurate asymptotic estimates original vector are thus obtained readily. By subtracting estimated from measurement output, performed, allowing existing controller plant (without...
Interturn short-circuit fault is a kind of initial failure the permanent magnet synchronous motor (PMSM) and serious consequences may be caused if it left undetected. In this letter, simple indicator defined as sum absolute values amplitude differences between stator currents, where amplitudes fundamental components currents are calculated by frequency-tracking algorithm. Then, an online interturn detection method proposed for PMSM. The experimental results validate effectiveness method.
This article proposes an integration method for interturn fault diagnosis and torque ripple minimization control of direct-torque-controlled surface-mounted permanent magnet synchronous machine (SPMSM) drive system without requiring the specific severity (short-circuited turn ratio, current). In this method, is detected located based on amplitude initial phase angle zero-sequence voltage component (ZSVC). Both injection improved flux observer are applied to reduce caused by fault....
This paper proposes a novel energy management strategy (EMS) of an onboard supercapacitor (SC) for subway applications with permanent-magnet (PM) traction system. The studied train is modeled, and its control developed, in which the flux-weakening operation taken into account to minimize copper loss. proposed EMS tries actual region. Compared conventional EMS, realized by increasing dc bus voltage demagnetizing <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...
High-resistance connection (HRC) is a common electrical fault for the electric machine drive system. This can lead to increased power loss and heat, thus possibly causing damage of system due excessive temperature. Hence, this paper first proposes vector control strategy surface-mounted permanent magnet synchronous (PMSM) with HRC minimize copper loss. The mathematical model PMSM presented in <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...
This paper proposes a dc-flux-injection method for fault diagnosis of high-resistance connection (HRC) in direct-torque-controlled permanent magnet synchronous machine (PMSM) drive system. In this method, the flux linkage bias is superimposed control loop direct torque system, and then dc current offset excited stator windings. By superimposing two different pairs biases, binary linear equation group about resistance deviations can be established based on currents zero-sequence voltage...
This article proposes an equivalent conversion-based improved loss minimization control method for interior permanent magnet synchronous motor (IPMSM). In the proposed method, both copper and iron are studied efficiency optimization problem due to unequal inductance parameters of IPMSM is considered solved, thus achieving optimal efficiency. First, according mathematical model considering resistance, conversion presented derive relationship between electromagnetic torque, d-axis q-axis...
In this paper, to solve the existing problems in general on-board integrated chargers (IC), a novel single-phase two-stage charger is proposed by taking unique advantages of five-phase hybrid-excitation flux-switching (HEFS) motors. The topologies and newly presented ICs are reviewed firstly, three main concluded. Then, IC presented, all winding selections thoroughly investigated theoretical analysis, finite-element analysis (FEA) experiments. topology, solved employing multi-phase system,...
In this paper, a finite-control-set model predictive direct torque control (FCS-MPDTC) method is proposed to reduce the ripple of segmented switched reluctance motor (SSRM) at low-speed stage. Firstly, prediction dynamic established, and phase can be predicted by detecting current rotor position signals. Then, principle power converter selection voltage vectors are introduced presented. Considering reduction, flux tracking performance copper losses cost function with torque, amplitude...
In field-oriented vector control of permanent magnet synchronous machine (PMSM) drives, the dead time will cause 5th and 7th current harmonics in stationary reference frame. They are mapped to negative positive 6th harmonic frame (SynRF), resulting torque ripple deterioration performance. To solve this problem, a new dead-time compensation method is proposed article. First, multiple complex coefficient filter modified with low-pass being paralleled extract sequence components from <italic...