A5086773853- Electric Motor Design and Analysis
- Magnetic Properties and Applications
- Magnetic Bearings and Levitation Dynamics
- Sensorless Control of Electric Motors
- Wireless Power Transfer Systems
- HVDC Systems and Fault Protection
- Energy Harvesting in Wireless Networks
- High-Voltage Power Transmission Systems
- Power Systems and Renewable Energy
- Non-Destructive Testing Techniques
- Machine Fault Diagnosis Techniques
- Multilevel Inverters and Converters
- Microgrid Control and Optimization
- Power System Optimization and Stability
- Thermal Analysis in Power Transmission
- Vibration and Dynamic Analysis
- Advanced Battery Technologies Research
- Induction Heating and Inverter Technology
- Oil and Gas Production Techniques
- Frequency Control in Power Systems
- Wind Turbine Control Systems
- Innovative Energy Harvesting Technologies
- Hydraulic and Pneumatic Systems
- Electric Power Systems and Control
- Power System Reliability and Maintenance
North China Electric Power University
2016-2025
South China University of Technology
2023
Guangzhou Medical University
2023
Guangzhou First People's Hospital
2023
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources
2013-2022
Florida International University
2019-2021
People's Hospital of Yangzhong
2020
Chongqing University
2013
Electric Power University
2012
Jinzhong University
2008
As one of the key components smart grid, advanced metering infrastructure (AMI) provides an immense number data, making technologies such as data mining more suitable for electricity theft detection. However, due to unbalanced dataset in field theft, many AI-based methods deep learning are prone under-fitting. To evade this problem and detect types attacks possible, outlier detection method based on clustering local factor (LOF) is proposed study. We firstly analyze load profiles with...
Permanent magnet synchronous motor (PMSM) provides a very competitive technology for electric vehicle (EV) traction drive with its higher power density and efficiency. When the control system of PMSM EV is affected by change parameters interference from external environment, cannot provide high-quality dynamic performance in time. In paper, an strategy based on improved sliding mode proportional resonance theory proposed, which speed controller designed exponential reaching law. The...
A fast and accurate analytical inverter-fed induction machine iron loss calculation model is proposed in this paper. The takes account of the influence output voltage harmonics from inverter on motor based piecewise variable coefficients method. Additionally, method incorporates slot harmonic component's loss. validity verified by comparing its calculated core values with measured ones a 5.5- 55-kW motors under different speeds load conditions. Compared classical coefficient finite-element...
Due to the coaction of supply harmonics and resulting from motor structures, mechanism distribution characteristics iron losses become more complicated in inverter-fed induction motors. Therefore, accurate prediction fine analysis loss are very important at design stage high-efficiency In order predict accurately, this paper proposes a piecewise model whose parameters vary with magnitude frequency flux density, two additional density terms introduced classical considering nonlinearity...
This article proposes a rotor temperature estimation method for in-service induction machine (IM) based on parameter identification, which combines the advantage of recursive least squares (RLS) and model reference adaptive system (MRAS). The RLS with forgetting factor is firstly adopted to identify parameters motor inductances. Then, online identification resistance can be realized via MRAS instantaneous reactive power (IRP) proportional integral (PI) regulation law designed by Popov...
Renewable energy units are required to have reliable fault ride-through capability prevent large-scale disconnection of renewable plants due grid faults. Since synchronous generators better voltage and current resistance capabilities, one the advantages connected through motor-generator Pair (MGP) system is isolation faults, which totally different from existing methods. First, structure mathematical model MGP introduced in this paper. Then, a novel control method for based on DC link...
A synchronous condenser (SC) can provide the reactive power for Ultra High Voltage Direct Current (UHVDC) converter station to keep voltage stability and prevent commutation failure. The single-phase short circuit at a transmission line is prevalent it result in not only drop but also increase of rotor loss temperature SC. In order study ability SC withstand short-circuit fault, field 300-MVar are studied by coupling electromagnetic models with electric grid. distributions core slot wedges...
With the emerging power electronic technologies, numerous electrical devices use high-frequency and nonsinusoidal supplies. Such sources generate complex harmonic fields that overburden accurate prediction of core losses using conventional finite element method (FEM). Thereby, to predict under those supplies accurately, this study first built a test system for measurement ferromagnetic materials (e.g., soft ferrite, laminated steels, nanocrystalline alloy) fed by square pulsewidth modulated...
For an inductive power transfer (IPT) system used in electric vehicle (EV) charging, the receiving coil is usually equipped with a shielding structure to reduce iron loss and electromagnetic interference chassis. However, addition of may significantly self-inductance mutual inductance, eddy current on pad can also produce loss. To maximize efficiency IPT for EV charging sufficient shielding, this study first analyzed equivalent circuit model system. A 3-D system, steel plate aluminum...
Due to the dynamic load and complex mechanical link, it is difficult precisely analyze characteristics of energy consumption beam pumping motor systems (BPMSs) in development energy-saving approaches oil production systems. To solve this problem, paper establishes a practical model that combines standard differential equation an induction motor, crank movement wave sucker rod, loss equations low- high-voltage supply lines, distribution transformers for analysis BPMSs. With model, influence...
Inverter-fed induction machines' iron loss characteristics become more complicated because of the harmonics brought by pulse width modulated (PWM) voltage-source power supplies. There are two main difficulties associated with analyzing motors, i.e., identification rotor flux density and accurate prediction loss. In order to reveal inverter-fed especially on side, a computationally efficient method using data from single supply fundamental frequency cycle (supply cycle) is proposed. With...
To overcome the influence of skewed rotor bars on operating performance cage induction motors, this paper presents a design method for non-skewed small and medium motor based time-stepping finite element method, in which approaches asymmetrical slots, closed reasonable slot combination, air-gap length are adopted studied systematically. With motors with can be realized. Simultaneously, harmonic, is caused by opening, eliminated effectively starting also improved. The example 5.5 kW presented...
In an inductive power transfer (IPT) system, the magnetic core is usually used to improve coefficient between primary and secondary coils. However, considering iron losses on materials, addition of may affect system efficiency and, at same time, increase weight IPT significantly. Therefore, in this study, aggregate influence thickness, permeability, performance comprehensively investigated. First, equivalent circuit model established, formulas for different types are analyzed. Then,...
Thoracic aortic dissection (TAD) is a life-threatening disease caused by an intimal tear in the aorta. The histological characteristics differ significantly between area (TA) and distant area. Previous studies have emphasized that certain specific genes tend to cluster at TA. Obtaining thorough understanding of precise molecular signatures near TA will assist discovering therapeutic strategies for TAD.We performed paired comparison pathological patterns with remote (RA). We used Tomo-seq,...
This study proposes a two‐term piecewise variable parameter model for precise prediction of iron losses in induction motors. In this model, two additional flux density terms reflect the non‐linear magnetisation and harmonic fields motors, main loss parameters are piecewisely with magnitude frequency density, so that higher accuracy can be achieved large range frequencies magnitudes. Meanwhile, fine analysis fundamental also carried out proposed influence on hysteresis eddy current revealed....