Mechanical Design and Simulation for Axial-field Permanent-magnet Direct Current Generator

随着社会经济的发展，能源越来越紧张。同时，使用传统能源导致的环境污染也日益严重，这些使得人们不得不寻找可再生能源以解决这些问题。在众多可再生能源中，风能由于其突出的优点而成为世界各国普遍重视的能源，风力发电技术也成为各国学者竞相研究的热点。相对于传统风力发电技术而言，直驱式变速恒频风力发电技术因其高效性正越来越受到重视。 盘式永磁直流发电机是一种结构简单、高效坚固的低速发电机，它可以由风力机直接驱动，具有结构紧凑、通风效果好等优点，比较适合于直驱式变速恒频风力发电系统。 本文在传统发电技术的基础上，以盘式永磁直流发电机为主要研究对象，进行了一定探讨，主要包括以下几个方面： （1）较为全面...Since the global warming effect and the energy crisis, renewable energy such as tide energy, wind energy, and solar energy has become more and more important. Thus, wind power generation with outstanding performance in energy generation, has become research emphasis in many countries. Specially, the direct-drive, variable-speed, constant-frequency generation technology is paid great attention for ...学位：理学硕士院系专业：物理与机电工程学院物理学系_无线电物理学号：2005130167

An innovative Design of Vertical-axis Wind Turbines for Home Use

本文介绍了一种小型家用垂直轴风力发电系统的设计方案。该系统针对传统萨窝纽斯形(Savonius)风机叶片的形状进行优化——扭曲叶片,对各项动力学参数进行模拟实验及计算。结果表明,这种扭曲叶片型的Savonius风力机与汽车发动机相结合可以使风能利用效率得到更好的开发。An innovative vertical-axis wind power generating system for home use has been proposed and tested.The emphasis is placed on optimizing the configuration of a traditional Savonius rotor(twisting the blades),simulating and experimenting.The computing results show that a Savonius rotor with twisted blades combined with a car-alternator can reach a better coefficient of performance

Design and Simulation of a New Axial-field Permanent-magnet DC Generator

对一种新型小功率盘式永磁直流风力发电机的原理和电磁设计进行了分析和推导,利用Ansoft Maxwell 3D软件对电机的磁场分布和运动情况进行了仿真,其结果可为进一步研究提供参考。In this paper,an innovative model of vertical-axis permanent-magnet direct-current wind-energy generator has been presented.Its working principle and electromagnetic circuit design have been analyzed and optimized.Ansoft Maxwell 3D software was used to simulate the electromagnetic field and investigate the generator′s dynamic behavior.All the simulation methodology and achievements facilitate the design optimization for wind-energy generator and in-depth research

人乳头瘤病毒16型病毒样颗粒的制备及其免疫原性研究

利用PCR技术从HPV16阳性阴道分泌物标本中获得HPV16 L1基因片段,并将其插入表达载体pTO-T7中,构建重组表达质粒pTO-T7-HPV16-L1;以该重组质粒转化大肠杆菌ER2566并表达HPV16 L1蛋白;所表达的HPV16 L1蛋白经过硫酸铵沉淀、离子交换层析和疏水相互作用层析等纯化步骤后,HPV16 L1纯度达到98%以上,并可在体外装配为直径50nm的病毒样颗粒;动物免疫原性研究结果显示,该病毒样颗粒可诱导高滴度的针对HPV16的中和抗体。上述研究结果表明通过大肠杆菌表达系统制备的HPV16病毒样颗粒具有纯度高,与天然病毒颗粒形态高度相似的特点,并具有高度免疫原性,可以应用于HPV16病毒样颗粒的结构功能研究及HPV16疫苗研发等领域

The Social Status of the Female in China and Its Influence Factors

女性对自身社会地位的主观评估主要取决于对自我能力的认可程度、母亲和自己的受教育水平、以及所居住区域的性别文化性质。对自己的能力树立信心是女性社会地位提高的一个与心理或性格相关联的先决条件,而教育投入则是提升女性社会地位一块不可或缺的重要基石。大男子区域文化不仅不合理地降低女性的社会地位,而且还让处于不平等社会地位中的女性感到自我满足。要进一步改善我国妇女的社会地位,就必须在注意提高妇女自信的心理素质和自强的教育素质的同时,从社区和社会层面消除以男权为核心的传统性别文化。The subjective self-assessment of the Women mainly depends on self- approval degree of ability, the educational level of themselves and their mothers and the sexual cultural nature of the inhabitant areas It is a precondition related to the psychology and the personality for women to establish their own confidence on their ability in order to raise their social status, while the educational input is the important and indispensable basis in promoting the social status of women The big man regional culture will not merely reduce the social status of women unreasonably, but also make the women who are in the unfair status feel satisfied In order to improve the social status of women in our country, we should dispel the traditional sexual culture with the male power as th core from the aspects community and society while raising the psychological quality and educational qualit

The Design of Energy Storage Module Based on Super Capacitor of Replacement Batteries

本文介绍了一种替代12V蓄电池的超级电容储能模块,并设计了相应的充电和稳压输出电路。通过Matlab软件对充电电流进行计算并采用L4970A和MAX668芯片进行电路设计,保证电路的效率和输出的稳定可靠。随着超级电容性能的提升,这种模块有望在部分电路代替蓄电池。A super-capacitor based module that would be capable of replacing the 12V battery is designed.In control part of the circuit, integrated circuit is employed to make the whole circuit simple,reliable and efficient.As the super capacitor's capability develops,the module may replace traditional battery in some area practically

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies