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2024 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2024

作者： Cui, Jinpeng Cai, Wei Zhang, Zeyang Xie, Ying Tang, Yue Wang, dongqi Harbin University Of Science And Technology School Of Electrical And Electronic Engineering Harbin China Dongfeng Motor Group Co. Ltd. R&d Institute Wuhan China

ISBN: (纸本)9798331529277

Automotive in-wheel motors are characterised by high torque density, high electrical load and compact installation space, which leads to high loss and heat dissipation difficulties, so efficient cooling and heat dissipation is an important guarantee for realising the design and safety of automotive in-wheel motors with high torque density. This paper takes the in-wheel motor as the research object and uses the finite element method to analyse the components of the in-wheel motor loss. The influence of coolant inlet flow rate on cooling effect was studied through simulation. The thermal field model of the in-wheel motor is established, and the temperature distribution characteristics of the in-slot oil cooling in-wheel motor under different working conditions are studied. And the temperature rise performance is compared with that of a typical housing water jacket. The results show that the maximum temperature of the motor under continuous operating condition is reduced from 138°C to 123°C, which has a positive effect on the design of the cooling structure of the in-wheel motor. © 2024 IEEE.

关键词： Permanent magnets

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research on Composite Cooling and Heat dissipation for Automotive drive Motor

Research on Composite Cooling and Heat Dissipation for Autom...

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2024 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2024

作者： Wang, dongqi Cai, Wei Zhang, Zeyang Xie, Ying Tang, Yue Cui, JinPeng Harbin University Of Science And Technology College Of Electrical And Electronic Engineering Harbin China Dongfeng Motor Group Co. Ltd. R&d Institute Wuhan China

ISBN: (纸本)9798331529277

In this paper, for the cooling problem of high-power density automotive permanent magnet synchronous motors, the heat dissipation performance of the three structures of water-cooled, oil-cooled and oil-water composite cooling, and their effects on the performance of the motor are studied. By analyzing the loss distribution of the motor, the heat dissipation performance of different cooling structures under each working condition is calculated, and the maximum output capacity of the motor under the optimal cooling method is explored. The results show that the oil-water composite cooling structure can significantly reduce the motor temperature and improve the heat dissipation ability of the motor, thus increasing the peak power and peak torque of the motor. Under the oil-water composite cooling method, the peak power of the motor can be increased to 427.7kW and the peak torque can be increased to 384.8Nm, which are increased by 13.8% and 9.8% respectively. This shows that the oil-water composite cooling structure not only improves motor performance, but also has the potential to further miniaturize the motor. This study provides an important reference for the design of cooling systems for high-power density permanent magnet motors. © 2024 IEEE.

关键词： Permanent magnets

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design and Simulation of Hinge-type ro-ro (roll-on/roll-off) Ship Car deck Structure 33rd

Design and Simulation of Hinge-type Ro-Ro (Roll-on/Roll-off)...

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33rd International Ocean and Polar engineering Conference, ISOPE 2023

作者： Kim, Hyun Soo Cho, Min Goo Kang, Sung Wook Kim, Jae Woong Pyo, Chang Min Ji, Chang Wook Park, Jang Ik Precision Mechanical Process and Control R&D Group Korea Institute of Industrial Technology Gyeongsangnam-do Jinju Korea Republic of Automotive Materials & Components R&D Group Korea Institute of Industrial Technology Gwangju Korea Republic of Advanced Forming Process R&D Group Korea Institute of Industrial Technology Ulsan Korea Republic of Research center Dae Lyun Engineering Co. Ltd. Busan Korea Republic of

ISBN: (纸本)9781880653807

ro-ro ships can roll-on or roll-off cargo with self-driving power such as passenger cars and trucks, and container cargo on transport devices such as trucks or trailers on a ramp. The representative types of ro-ro ships are PCC (Pure Car Carrier) and PTCT (Pure Car & Truck Carrier). ro-ro ship is configured to load as many cargoes as possible by dividing the cargo hold into multiple card decks up and down. It is necessary to adjust the height of the car deck according to the type of vehicle being loaded. For this purpose, a number of fillers are installed on the inner deck of the ro-ro ship. In other words, to load high cargo such as heavy equipment on the car deck, the height between the decks must be high. At this time, the liftable car deck is adjusted using the deck lifter installed on the pillar. Existing liftable car deck structures are made of a single large plate, so it takes a lot of time and money to install and dismantle them. In this study, a hinge-type liftable car deck was designed. In addition, the overall structural integrity including the hinge was evaluated through structural analysis in accordance with the classification regulations. © 2023 by the International Society of Offshore and Polar Engineers (ISOPE).

关键词： Arctic engineering

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Induction Machine V/f Control with Stator Flux and Slip Frequency Compensation for Maximum Power Factor, with Experiments

Induction Machine V/f Control with Stator Flux and Slip Freq...

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2023 International Aegean Conference on Electrical Machines and Power Electronics and 2023 International Conference on Optimization of Electrical and Electronic Equipment, ACEMP-OPTIM 2023

作者： Popa, Ana-Adela Isfanuti, Andy-Sorin Tutelea, Lucian-Nicolae Boldea, Ion Politehnica University Timisoara Romanian Academy Electrical Engineering Department Timisoara Romania Corporate R&D DIWRW ZF Group Timisoara Romania

ISBN: (纸本)9798350311495

Taking into account their affordability, reliability, mechanical robustness, especially in hostile environments, but also their low cost, induction machines continue to be preferred in many industry applications. Usually, the implementation of vector control necessitates the use of current or position sensors, which increases the cost of the drive system. On the other hand, the traditional V/f scalar control does not need a sophisticated control strategy to identify the rotor position, though it is mainly characterized by slow speed response, especially when load torque is applied. Therefore, this paper proposes a comparison between both simulations and experimental results for two different V/f scalar control methods, with voltage amplitude correction loop and slip frequency compensation considering the maximum power factor condition, for a 300 W induction machine (IM). © 2023 IEEE.

关键词： Induction machine

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Optimization of High Voltage and Large Capacity Circuit Breakers Based on Parallel Flow Field Calculation 13

Optimization of High Voltage and Large Capacity Circuit Brea...

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13th International Conference on Power and Energy Systems, ICPES 2023

作者： Zhang, Hao Wang, Zhijun Song, Yunlei Li, Miaoxin Liu, Yapei Yao, Yongqi Pinggao Group Co. Ltd R&d Centre Pingdingshan China Shenyang University of Technology School of Electric Engineering Shenyang China

ISBN: (纸本)9798350345063

In the process of high-voltage circuit breaker breaking, the arc extinguishing chamber is a complex multi-field coupling physical process, and the simulation technology of the flow field in the arc extinguishing chamber is the core technology of circuit breaker design. The early simulation technology of airflow field in arc extinguishing chamber uses single core calculation, which takes a long time and cannot meet the requirements of product development cycle. Based on the arc mathematical model, this paper developed the parallel simulation technology of the gas field in the arc extinguishing chamber, analyzed the calculation results of the pressure and temperature of the arc extinguishing chamber under the typical short-circuit breaking condition. The influence of different nozzle throat diameters on the airflow field of high-voltage and large-capacity interrupter was studied, and the optimization direction of the interrupter structure was determined to complete the product optimization design. © 2023 IEEE.

关键词： Flow fields

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A Limited Angle Torque Motor Hybrid Structure to Improve Torque density

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Transactions of the Korean Institute of Electrical Engineers 2022年第2期71卷 359-365页

作者： Shin, Jin-Yeong Kwon, Soon-O Lee, Ho-Young Lee, Gi-Ju Yoon, Seung-Young Choi, Hong-Soon School of Electronic and Electrical Engineering Kyungpook National University Korea Republic of Advanced Mechatronics R&D Group Korea Institute of Industrial Technology Korea Republic of

The limited angle torque motor (LATM) is an electromagnetic actuator that rotates within a limited angle of less than ±90°. In this study, the advantages of permanent magnet (PM) type and reluctance type LATM are combined to create a hybrid LATM with high torque density for the same volume. The proposed hybrid LATM structure combines structural advantages using a PM with a high magnetic flux density of a PM type LATM and voice coil winding with a high fill factor of reluctance type, as well as making a prototype and conducting a torque test. © The Korean Institute of Electrical Engineers.

关键词： Torque

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Carrier-Based discontinuous PWM Strategy by Switching Clamp Modes for Vienna rectifier With Unbalanced dC-Links 27

Carrier-Based Discontinuous PWM Strategy by Switching Clamp ...

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27th International Conference on Electrical Machines and Systems, ICEMS 2024

作者： Zhang, Zhijian Li, Bingxing ding, Li Zhao, Nannan Hu, Ziming Li, Chengrui Wang, Gaolin Xu, dianguo School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China Midea Group. R&d Center of Residential Air Conditioner Division Foshan China Shenzhen China

ISBN: (纸本)9784886864406

When the dC-links of Vienna rectifier are unbalanced, there are issues of the distortion in input current and the fluctuation in neutral point (NP) voltage. To solve the above problems, a carried-based discontinuous pulse-width modulation strategy by switching clamp modes is proposed. According to the NP current, the influences of different clamping modes on the NP voltage are analyzed in the presence of unbalanced dC-links. Under the unbalanced degree, the clamping modes are switched to reduce the NP voltage fluctuation. At the same time, the additional switching actions introduced by the clamp modes are reduced by optimizing the switching sequence and carrier. Finally, the effective of the proposed strategy is verified on a Vienna rectifier experimental platform. © 2024 The Institute of Electrical Engineers of Japan.

关键词： Pulse width modulation

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Predicted Cu Plating Thickness distribution in Fan-Out Panel Level Package with Global/Local Model

Predicted Cu Plating Thickness Distribution in Fan-Out Panel...

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International Conference on Electronics Packaging (ICEP)

作者： Yi-Lun Hung Yung-Sheng Lin Min-Yan Tsai Mingtzung Kuo Ling-Yuan Chang Chen-Chao Wang Ping-Feng Yang Chin-Pin Hung Corporate R&D Advanced Semiconductor Engineering (ASE) Group Kaohsiung Taiwan

ISBN: (数字)9784991191190

ISBN: (纸本)9798331514747

This study proposed the application of the finite element method (FEM) to predict the distribution of copper (Cu) electroplating thickness at the panel level. Initially, the electrochemical parameters of the electroplating solution were measured using a potentiostat and subsequently integrated into the simulation. A global/local modeling approach was employed to analyze the distribution of electroplating thickness in specific regions of interest. Furthermore, a three-step methodology was introduced to develop an optimized model, facilitating an effective transition from the global model to the local model. The results demonstrated a strong correlation between the model predictions and experimental measurements regarding the distribution of electroplating thickness.

关键词： Electrochemical deposition Analytical models Correlation Simulation Predictive models Plating Market research Production facilities Finite element analysis Thickness measurement

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Integrated Perturb and Observe Algorithm to Extract Maximum Power in Hybrid renewable Energy System 1

Integrated Perturb and Observe Algorithm to Extract Maximum ...

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1st International Conference on Advances in Electrical, Electronics and Computational Intelligence, ICAEECI 2023

作者： Singh, r. Lal raja Agathiyan, S. Ganesan Subramanian, G. Pradheep, K. Kalaignar Karunanidhi Institute of Technology Department of Electrical and Electronics Engineering India Nethaji Subash Chandra Bose Group of Institutions R&D Cell India

ISBN: (纸本)9798350342796

Nowadays, the development of solar photovoltaic (SPV) technologies is shifting from prototype models and pilot demonstrations to comprehensive marketable products. However, poor power conversion efficiency of the solar panel is the key challenge in the solar industry since the panels only convert a small proportion of the accessible solar energy into electrical power. Hence, an effective maximum power point tracking (MPPT) system is inevitable to increase the power conversion performance of SPV cells. recently, researchers have developed several MPPT approaches to overcome the key challenges in SPV-based renewable energy generation. The traditional power point tracking approaches such as incremental conductance and perturb & observe (P&O) methods easily trap into the local maximum power point. Also, these approaches fail to analyze the dynamic variations in radiance conditions and fetch large oscillation amplitude and poor convergence speed. In this context, this study proposes a Tuna Swarm Optimizer-based P&O approach (TSOPO) to decrease the oscillation amplitude, enhance the convergence rate, and increase the performance of the P&O technique over diverse partial shading (PS) patterns. This method can achieve the global maximum power point for various PS patterns. The performance of the TSOPO approach is evaluated by relating its maximum power, efficiency, and tracking speed with other advanced P&O variants using metaheuristic algorithms under four different PS patterns. The results prove that the TSOPO approach provides a better convergence rate, higher tracking efficiency, and extracts maximum power from SPV panels. © 2023 IEEE.

关键词： Fuel cell Maximum Power Point Tracking (MPPT) Perturb and Observe Solar PV array Wind turbine

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Post-Buckling Analysis for Addressing Asymmetric Warping of Fan-Out reconstitution Process 22

Post-Buckling Analysis for Addressing Asymmetric Warping of ...

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22nd International Conference on Electronics Packaging, ICEP 2023

作者： Chen, Chia-Yu Lee, Yu-Ching Chen, Kuo-Shen Chen, dao-Long Lin, Yu-Xuan Lai, Wei-Hong Yang, Hung-Chun Chen, Tang-Yuan Ho, Ching-Jenq Kao, Chin-Li National Cheng-Kung University Mechanical Engineering Department Tainan70101 Taiwan Advanced Semiconductor Engineering Inc. Group Corporate R&D Kaohsiung81174 Taiwan

ISBN: (纸本)9784991191152

Fan-out reconstitution process involves numerous thermal cycling and significant wafer warping would inevitable occur and full scale simulations are thus usually required for properly optimizing design and process parameters. However, the present nonlinear finite element approach of predicting wafer asymmetric warpage could result in extra computational cost and alternative approach might be worth to explore for performing efficient simulations. Thus, this work proposes a buckling/post-buckling scheme as a potential alternative for studying wafer warping problem and applies the schemes in real packaging process for demonstrating the feasibility and potentials of the approach. The simulation shows that the errors of bifurcation temperature and warpage of the two analyses are 14% and 6%, respectively w.r.t. nonlinear simulation thus the deviations are within acceptable range. Subsequently, process emulator with buckling/post-buckling analysis is established to predict warpage in the large deformation region. And compare with the nonlinear analysis, the error of warpage is within 3%. In the future, more numerical models are discussed to analyze the sensitivity of parameters thus the deformation behavior of actual process can be described more realistically. © 2023 Japan Institute of Electronics Packaging.

关键词： Buckling

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