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1st International Symposium on Advances and Innovations in Mechanical engineering, ISAIME 2019

作者： Uta Nugraha, Yoga Cahyadi, Arief Nur Yuniarto, M. Sidharta, Indra Department of Electrical Engineering Center of Excellence for Automotive Control and System Institut Teknologi Sepuluh Nopember Surabaya Indonesia Department of Mechanical Engineering Center of Excellence for Automotive Control and System Institut Teknologi Sepuluh Nopember Surabaya Indonesia

The analysis model is the first stage used to determine the design parameters of the motor. It is coupled with an optimization method to find a combination of design parameters. The purpose of this paper is optimizing the torque density of the Brushless DC (BLDC) Motor with Interior Permanent Magnet (IPM) V-type. The reference design is 3-phase and 12/8 pole BLDC motor with a concentrated winding. To obtain this optimal design, this is done by eliminating the rotor area that is not covered by magnetic flux without reducing the main performance of the motor. Elimination area prediction refers to initial motor design simulation which is operated on rating condition. Mathematical modeling is based on the 2-D finite element analysis (FEA) using software Ansys Maxwell. Particle Swarm Optimization (PSO) algorithm with multi-objective function has been applied to determine the area of the rotor structure to be eliminated, resulting in an optimal torque-density design. Matlab code is also included to execute the optimization algorithm. Excitation uses the ideal sinusoidal signal by ignoring harmonic distortion. This paper features a new optimal design for IPM by considering torque density, cogging torque, harmonic distortion in back-electromagnetic force (back-EMF), and material demagnetization constraints using PSO. Quality of PSO optimization can be proven by increasing the torque density without compromising the main performance of the motor compared with FEA. With this method also provide disadvantage, such as the cost of production is more expensive because it should add a profile of the rotor mold. © Published under licence by IOP Publishing Ltd.

关键词： Brushless DC motors

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Review of the Topology and Energy Management Hybrid Energy Storage on Electric Vehicle 1

Review of the Topology and Energy Management Hybrid Energy S...

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1st International Symposium on Advances and Innovations in Mechanical engineering, ISAIME 2019

作者： Fitri Desanti, Ayuning Uta Nugraha, Yoga Nur Yuniarto, M. Wikarta, Alief Department of Electrical Engineering Center of Excellence for Automotive Control and System Institut Teknologi Sepuluh Nopember Surabaya Indonesia Department of Mechanical Engineering Center of Excellence for Automotive Control and System Institut Teknologi Sepuluh Nopember Surabaya Indonesia

There are several ways to improve the mileage of the electric vehicle (EV). High-efficiency drivetrain and high energy density are the main factors. Energy storage source for EV obtained from the battery, ultra-capacitor (UC) and fuel cells (FC). Each of that has own characteristics and capacity. The battery has a good energy density, UC and FC are superiors on power density. Combining some of the energy storage will improve performance and mileage. On this paper, the topology of combining energy storage are reviewed. In addition, also review the power management strategy of hybrid energy storage. By using a convenient strategy, hybrid energy storage becomes very worth. © Published under licence by IOP Publishing Ltd.

关键词： Fuel cells

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Shifting dynamics of self-immolation in the capital of Iran? The rising trend among young, unmarried, less-educated men

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Burns Open 2025年 11卷 100406-100406页

作者： Shokri, MohammadAli Khalili, SaeedehSadat Vahabie, Abdol-Hossein Ghanbari Jolfaei, Atefeh Keshavarz-Akhlaghi, Amir-Abbas Dehmardei, Mostafa Mirfazeli, Fatemeh Sadat National Brain Centre Iran University of Medical Sciences Tehran Iraq Department of Neuroscience Faculty of Advanced Technologies in Medicine Iran University of Medical Sciences Tehran Iraq Cognitive Systems Laboratory Control and Intelligent Processing Center of Excellence (CIPCE) School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iraq Mental Health Research Center Psychosocial Health Research Institute Department of Psychiatry School of Medicine Iran University of Medical Sciences Tehran Iraq School of Medicine Iran University of Medical Sciences Tehran Iraq Department of Cognitive Sciences Faculty of Psychology and Education University of Tehran Tehran Iraq School of Cognitive Sciences Institute for Research in Fundamental Sciences (IPM) Tehran Iraq

In our study, we aimed to explore the psychiatric disorders, risk factors, and predictors of self-immolation among individuals admitted to Shahid Motahari Hospital in Tehran from 2019 to 2020. This cross-sectional study examines 64 hospitalized patients who received psychiatric counseling following self-immolation incidents. The rate of self-immolation varies significantly based on specific demographics. It is observed that in our population men had a higher rate of being unmarried (70.96 % vs 15.15 %), lower levels of education (70.96 % vs 63.63 % did not have a university degree), higher level of unemployment (54.83 % vs 30.30 %), younger age average with most men aging 15–24 (29.06 (SD = 9.33)) vs women 35–44 (35.27(SD = 10.27)) and higher prevalence of addiction (67.74 % vs 36.36 %) compared to women. On the other hand, women who attempted self-immolation mainly were married, involved in housekeeping, and tended to exhibit higher rates of depression (63.63 % vs 32.25 %) than men. Furthermore, these self-immolation incidents are often impulsive (64.1 %) and occur shortly (under an hour) after experiencing a stressor (39.1 %). Self-immolation accidents are frequently carried out using gasoline (50 %). Geographically, the majority of self-immolation cases of our study are concentrated in the central region of Iran (76.6 %), followed by the western region (15.6 %) this may be due to the proximity of these regions to our center while patients of other regions were hospitalized in their referral hospitals and were rarely transferred to the capital. To effectively address the issue of self-immolation and reduce its prevalence, it is essential to identify vulnerable populations and explore targeted preventive measures. Based on our findings, future pilot studies could investigate the feasibility of specific interventions, such as crisis hotlines to reduce impulsivity-related acts of self-immolation. Additionally, small-scale feasibility projects could explore the effect

关键词： Contributing factors Psychiatric disorders Self-immolation

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Flow analysis of the vertical axis Savonius current turbine (VASCT) performance for Myring blade n = 1 using CFD aproach 2

Flow analysis of the vertical axis Savonius current turbine ...

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2nd International Conference on Computer, Science, engineering, and Technology, ICComSET 2019

作者： Setiawan, P.A. Ariwiyono, N. Indarti, R. Santoso, M. Antoko, B. Yuwono, T. Widodo, W.A. Department of Marine Engineering Politeknik Perkapalan Negeri Surabaya Surabaya60111 Indonesia Department of Marine Electrical Engineering Politeknik Perkapalan Negeri Surabaya Surabaya60111 Indonesia Dapartemen of Mechanical Engineering Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia Center of Excellence in Automotive Control and System Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia

The flow visualization of vertical axis Savonius current turbine has been investigated numerically by using Myring formula n of 1. Computational Fluid Dynamics or CFD approach has been carried out by using Gambit for geometry and ANSYS 17.0 running to solve the incompressible U-RANS. This work has been done by comparing the performance between Myring and conventional Savonius. The y+ in the first layer of blade surface has been made between 30 and 100 with y+ in about 52. The turbulence model will be chosen the Realizable k-epsilon (RKE) for this turbine case. The numerical obtain the torque and power coefficient and the power coefficient called the turbine performance. The numerical simulation has been validated by experimental results towards torque coefficient. The results have indicated that the Myring formula n = 1 have the best performance compared this one by decreasing the pressure in attached flow area. © 2020 Published under licence by IOP Publishing Ltd.

关键词： Computational fluid dynamics

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Performance Improvement of Axial Switched Reluctance Motor using Low-Cost Magnet 6

Performance Improvement of Axial Switched Reluctance Motor u...

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6th International Conference on Electric Vehicular Technology, ICEVT 2019

作者： Nugraha, Yoga Uta Anton Asfani, Dimas Riawan, Dedet Candra Nur Yuniarto, Muhammad Center of Excellence for Automotive Control and System Institut Teknologi Sepuluh Nopember Department of Electrical Engineering Surabaya Indonesia Institut Teknologi Sepuluh Nopember Department of Electrical Engineering Surabaya Indonesia Center of Excellence for Automotive Control and System Institut Teknologi Sepuluh Nopember Surabaya Indonesia

ISBN: (纸本)9781728129174

A Switched reluctance motor (SRM) is known characterized by a robust, simple structure, and low cost. However, its torque density is generally lower than the induction motor (IM) and brushless DC motor (BLDC). In addition, axial SRM produces more torque than radial SRM by the same dimension. In this paper, performance improvement of axial SRM by adding a low-cost magnet in the stator yoke is investigated. A nonrare earth type magnet, Alnico, has been used for this research. Placement and dimensions of low-cost magnet affect performance improvement. Simulation and analysis using Finite Element Magnetic Method (FEMM) and Ansys Maxwell. A comparison between existing axial SRM and axial SRM with low-cost magnet is reported. © 2019 IEEE.

关键词： Costs

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Design and Performance Analysis of Brushless DC Motor Cooling System for Low-Cost Manufacturing Process 1

Design and Performance Analysis of Brushless DC Motor Coolin...

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1st International Symposium on Advances and Innovations in Mechanical engineering, ISAIME 2019

作者： Uta Nugraha, Yoga Cahyadi, Arief Raharjo, Juniono Nur Yuniarto, M. Wikarta, Alief Department of Electrical Engineering Center of Excellence for Automotive Control and System Institut Teknologi Sepuluh Nopember Surabaya Indonesia Department of Naval Architechture Center of Excellence for Automotive Control and System Institut Teknologi Sepuluh Nopember Surabaya Indonesia Department of Mechanical Engineering Center of Excellence for Automotive Control and System Institut Teknologi Sepuluh Nopember Surabaya Indonesia

Thermal analysis on BLDC Motors is very important to be learned in order to obtain a low-cost motor design and have a high level of efficiency. The design of the existing motor cooling system uses a complex design that must use sophisticated machining tools and spend a lot of money in the manufacturing process. The purpose of this paper is to get the geometry of the cooling system on BLDC motor with simple manufacturing process thus saving the cost of production. The expected cooling system design is a simple geometry so that manufacturing can be done using 3-axis CNC machining. Design of cooling system using water-jacket with an additional cover. On this study, Author modeled the motor with Ansys Maxwell to obtain the heat source parameters of the motor geometry. Software Fluent is involved to perform the temperature simulation on the motor using the designed cooling system then validated with an experiment. Thermal analysis of this study compares motor performance with the use of water and oil. The flow rate compared to the radiator power efficiency. © Published under licence by IOP Publishing Ltd.

关键词： Cooling systems

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A Fault Tolerant control Scheme Using the Feasible Constrained control Allocation Strategy

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International Journal of Automation and computing 2019年第5期16卷 628-643页

作者： Mehdi Naderi Tor Arne Johansen Ali Khaki Sedigh Center of Excellence in Industrial Control Faculty of Electrical EngineeringK.N.Toosi University of TechnologySeyyed Khandan BridgeShariati AvenueTehran ***Iran Center for Autonomous Marine Operation and Systems Department of Engineering CyberneticsNorwegian University of Science and TechnologyTrondheim 7491Norway

This paper investigates the necessity of feasibility considerations in a fault tolerant control system using the constrained control allocation methodology where both static and dynamic actuator constraints are considered. In the proposed feasible control allocation scheme, the constrained model predictive control(MPC) is employed as the main controller. This considers the admissible region of the control allocation problem as its constraints. Using the feasibility notion in the control allocation problem provides the main controller with information regarding the actuator′s status, which leads to closed loop system performance improvement. Several simulation examples under normal and faulty conditions are employed to illustrate the effectiveness of the proposed methodology. The main results clearly indicate that closed loop performance and stability characteristics can be significantly degraded by neglecting the actuator constraints in the main controller. Also, it is shown that the proposed strategy substantially enlarges the domain of attraction of the MPC combined with the control allocation as compared to the conventional MPC.

关键词： control allocation feasibility fault tolerant control model predictive control domain of attraction

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Multi-objective IGDT-based scheduling of low-carbon multi-energy microgrids integrated with hydrogen refueling stations and electric vehicle parking lots

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Sustainable Cities and Society 2021年 74卷 103197-103197页

作者： Mansour-Saatloo, Amin Ebadi, Ramin Mirzaei, Mohammad Amin Zare, Kazem Mohammadi-Ivatloo, Behnam Marzband, Mousa Anvari-Moghaddam, Amjad Faculty of Electrical and Computer Engineering University of Tabriz Tabriz Iran Department of Electrical Engineering Sahand University of Technology Tabriz Iran Northumbria University Electrical Power and Control Systems Research Group Ellison PlaceNewcastle upon TyneNE1 8ST United Kingdom Aalborg University Aalborg9220 Denmark Center of Research Excellence in Renewable Energy and Power Systems King Abdulaziz University Jeddah Saudi Arabia

There is little room for doubt that distributed generation systems including renewable energy, microgrids (MGs), combined heat and power (CHP) units and storage systems have been of particular importance in sustaining low-carbon and cost-effective operations due to the tremendous increase in greenhouse gas emissions in recent years. Additionally, hydrogen-based power technologies have earned a great deal of publicity that hydrogen can serve as a zero-emission fuel for electrical power and thermal energy production. In this regard, the current paper proposes an optimal energy management strategy for a combined hydrogen, heat, and power MG (CHHP-MG) with hydrogen fueling stations (HFSs) for hydrogen vehicles (HVs), electric vehicle parking lots (EVPLs) and fuel cell micro-CHP (FC-MCHP) units to meet power and heat requirements. In order to reduce the regular operating expense, the presented CHHP-MG could also communicate with both electricity and hydrogen markets. In addition, to compensate for the associated heat and hydrogen requirements, power-to-X technologies such as the power to heat (P2HT) and power to hydrogen (P2H) are integrated. In order to improve flexibility and build a low carbon MG, multi-energy storage (MES) system along with heat and power demand response (HPDR) programs will be taken into consideration. As the uncertainties associated with the predicted wind and photovoltaic power have a major impact on the energy management of the CHHP-MG, a multi-objective information gap decision theory (IGDT)-based robust approach is applied as an effective non-probabilistic modeling technique for handling such uncertainties. The empirical results show that the proposed model can efficiently handle the uncertainties and reduce the overall operation cost by 76.35%. © 2021 Elsevier Ltd

关键词： Energy management

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Active Disturbance Rejection control of High-Order Flat Underactuated Systems: Mass-Spring Benchmark Problem 20th

Active Disturbance Rejection Control of High-Order Flat Unde...

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20th Polish control Conference, PCC 2020

作者： Madonski, Rafal Ramirez-Neria, Mario Giernacki, Wojciech Energy Electricity Research Center International Energy College Jinan University ZhuhaiGuangdong Province519070 China Mechatronics Department Universidad Politecnica del Valle de Mexico UPVM Tultitlan de Mariano Escobedo Fuentes del Valle54910 Mexico Institute of Robotics and Machine Intelligence Faculty of Control Robotics and Electrical Engineering Poznan University of Technology Poznan60-965 Poland

ISBN: (纸本)9783030509354

A custom active disturbance rejection control (ADRC) is proposed for trajectory tracking in uncertain underactuated systems. By utilizing a particular property of the differentially flat plant model, a robust output-feedback controller with a novel cascade of extended state observers (ESO) is introduced. It effectively deals with the problem of governing high-order plants without over-amplification of the measurement noise, typically seen in conventional single high-gain observer-centered control approaches. The proposed solution is based on full utilization of the information already available about the governed system, without necessity for additional measurement devices. In order to be easily implementable, it assumes only limited knowledge of the system model and is expressed in an industry familiar error-based form with a straightforward tuning method. A representable two-mass three-spring benchmark problem is used throughout the paper to convey the proposed idea and evaluate it experimentally on a laboratory testbed. © 2020, Springer Nature Switzerland AG.

关键词： Disturbance rejection

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The Use of Various Neurostimulators in Therapy of Neurodegenerative Disorders – A Survey

The Use of Various Neurostimulators in Therapy of Neurodegen...

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Progress in Applied electrical engineering (PAEE)

作者： Aleksandra Kawala-Sterniuk Agata Gajos Mateusz Pawłowski Witold Libionka Władysław Piotr Duch Bartosz Pańczyszak Monika Stomal-Słowińska Michał Podpora Waldemar Bauer Adam Sudoł Mariusz Pelc Jarosław Zygarlicki Piotr Sterniuk Faculty of Electrical Engineering Automatic Control and Informatics Opole University of Technology Opole Poland Department of Neurosurgery "Vital Medic" Hospital Kluczbork Poland Department of Extrapyramidal Diseases Medical University of Łódź Łódź Poland Faculty of Health Sciences Wroclaw Medical University Wrocław Poland Department of Automatic Control and Robotics AGH University of Science and Technology Kraków Poland Faculty of Natural Sciences and Technology University of Opole Opole Poland School Of Computing and Mathematical Sciences University of Greenwich London United Kindgom Center for Technology Transfer Opole University of Technology Opole Poland

ISBN: (数字)9781665455152

ISBN: (纸本)9781665455169

The use of neurostimulators in the treatment and therapy of neurodegenerative diseases is an alternative to pharmacological treatment. Unfortunately, most of these disorders are incurable, however, the use of neurostimulators can delay the onset of symptoms, the course of the disease and significantly improve the quality of life. Treatment with the use of neurostimulators also allows you to avoid side effects which usually accompany pharmacotherapy, or in order to replace it when prescribed medication is not working properly or not working at all. This paper focuses mainly on vagus nerve and deep brain stimulation.

关键词： electrical engineering Deep brain stimulation Medical treatment Delays Diseases

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