A5079615796- Electric Motor Design and Analysis
- Magnetic Bearings and Levitation Dynamics
- Induction Heating and Inverter Technology
- Integrated Energy Systems Optimization
- Magnetic Properties and Applications
- Sensorless Control of Electric Motors
- Multilevel Inverters and Converters
- Power System Reliability and Maintenance
- Microstructure and mechanical properties
- Microgrid Control and Optimization
- Energy Load and Power Forecasting
- Advanced DC-DC Converters
- Aluminum Alloys Composites Properties
- Optimal Power Flow Distribution
- Superconducting Materials and Applications
- Electrical Contact Performance and Analysis
- Enhanced Oil Recovery Techniques
- Nuclear reactor physics and engineering
- Advanced Thermodynamic Systems and Engines
- HVDC Systems and Fault Protection
- Reservoir Engineering and Simulation Methods
- Electric Power System Optimization
- Optical Systems and Laser Technology
- Climate Change Policy and Economics
- Engineering and Technology Innovations
Zhejiang University
2013-2024
Waseda University
2024
Small industrial three-phase induction motors (IMs) normally suffer from poor operational efficiency and power factor. This paper presents a high-performance line-start permanent magnet synchronous motor (LSPMSM) which is developed by simple modifications of an off-the-shelf small IM with minimized additional costs. Two-dimensional (2-D) dynamic finite element analysis (FEA) models are employed to assess the machine performances, validated comprehensive experimental results. The comparisons...
The carbon emission right is considered as an effective way to reduce emissions in the power industry, especially under global goal of neutral. Considering that cost will affect long-term profits, bidding strategies generation companies electricity market and need be coordinated. Given this background, a bi-level optimization model proposed for companies, which considers aims maximize their annual benefits. purchase at beginning year optimized upper-level with maximizing expected income...
Abstract This article proposes a novel asymmetric chamfering consequent-pole Vernier permanent magnet (CPVPM) rotor topology of torque enhancement and ripple reduction for electric propulsion vessels. The structure is featured by the chamfered applied on CP adjacent to PMs. It demonstrated that without any modification high price limited storage rare-earth PM materials employed rotor, density machine with an can be effectively increased. influence key parameters CPVPM characteristics are...
Nowadays, the valid development and full utilization of renewable energy sources such as wind power solar are considered to be one most significant approaches get rid dilemma realize environmental governance. However, although there more connected systems, has not been fully used yet. In this context, an optimization model for regional system with pump storage power, wind, hydro, thermal is proposed enhance economy, protection, energy-saving stability system. Besides, fuzzy chance constraint...
Abstract Under the background of carbon neutrality and large‐scale penetration renewable energy, integrated local energy system (ILES) has been extensively recognized as an effective way to reduce emissions improve consumption level due its high utilization multiple complementarity. Hence, optimal low‐carbon scheduling model ILES considering oxygen‐enriched combustion plant (OECP) generalized storages (GESs) is proposed in this paper emissions, operating costs ILES. More specifically,...
An efficient early-warning method for power supply service quality(PSSQ) is of great significance to optimize the customer experience and ensure security systems. Based on data from side, this paper proposes a PSSQ, which based three-way decision theory long–short term memory (LSTM) network. First all, four indicators (i.e., proportion complaints work orders indicator, responsible duplicate indicator average processing time indicator) PSSQ are proposed according requirements side. Secondly,...
The connected and autonomous vehicle (CAV) is promised to ease congestion in the future with rapid development of related technologies recent years. To explore characteristics mixed-traffic flow dynamic transmission mechanism, this paper firstly detailed car-following model different types, establishing fundamental diagram through considering penetration rates fleet size CAV. Secondly, constructed lane-changing judgment mechanism based on random utility theory. Finally, proposed a lane-level...
Current-controlled variable inductors adjust the inductance of an alternating current (ac) coil by applying a controlled dc to saturate iron cores ac coil. The has be maintained during operation, which results in increased power losses. This paper presents new stress-based inductor control using inverse magnetostrictive effect material. stress can applied piezoelectrical material, and thus voltage-controlled realized with zero-power consumption. concept is validated 3-D finite-element...
The performance influence on the dual fuel engine by intake/exhaust port flow coefficient and swirl are major factors to engine. Therefor optimization of intake exhaust ports was carried out ensure adaptability airway structure ACD320 in this paper. According limitation conditions structural parameters, multiple airways crossing diameter were designed. research variation rules characteristics different circulation cross-sectional area aerodynamics modeling simulating approach optimizing...
The connection relationship of distribution network topology is great significance for the maintenance and fault diagnosis network, scheduled power outage optimization. At present, verification topological documents mainly relies on on-site inspection, which consumes a lot manpower material resources inefficient. Therefore, an efficient method low-voltage substation areas required. Given this background, model error correction user access phase identification stations based multi-dimensional...
As an important equipment for high-speed railway (HSR) to obtain electric power from outside, the state of pantograph will directly affect operation safety HSR. In order solve problems that current detection method is easily affected by environment, cannot effectively deal with interference external scenes, has a low accuracy rate and can hardly meet actual requirements HSR, this study proposes algorithm. The algorithm mainly includes three parts: first use you only look once (YOLO) V4...
With the increasing seriousness of environmental and energy shortage problems, new technologies such as photovoltaic distributed generations storage devices will be development trend future rural distribution network. In this paper, a bi-layer optimal planning model network is established, where problem on long time scale solved in upper-layer model, operation short lower-layer model. Then, operating converted added into constraints according to Karush–Kuhn–Tucker (KKT) conditions, Big-M...
Abstract With the adoption of gas‐fired units (GFU), interaction between electricity and gas systems has been intensified. The failure sources may lead to insufficiency supply GFUs, further result in shortage, threatening reliabilities systems. However, compared with electric power flow, dynamics flow are much slower. Most existing studies evaluated integrated (IEGS) without considering slower which not fully accurate short‐term. This paper proposes a short‐term reliability evaluation...
Permanent magnet synchronous motors (PMSM) are widely used in servo systems, and many methods have been proposed to solve the critical problem of detecting rotor position real time. However, existing not suitable for detection initial surface-mounted permanent (SPMSM). A simple highly accurate method utilizing an incremental encoder is presented. By applying certain current vectors, monitoring direction motor's rotation, changing next applied can be obtained.
A new type of multi-DOF(degrees freedom) spherical induction motor with no output shaft was designed aiming at shortages current multi-DOF motion systems. This uses a 2-layer shell-like metal rotor coated on the outermost layer and four independent curved motors based linear which are mutually orthogonal. The can generate torque in any direction directly outer surface to realize rotary around axis. paper firstly introduces structure this kind motor, distribution each stator when moving....