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Smart Grid and Renewable Energy 2023年第5期14卷 73-84页

作者： Ibrahima Gueye Mamadou Sall Abdoulaye Kebe Laboratoire L3EPI Ecole Superieure Polytechnique Université Cheikh Anta Diop Dakar Senegal

In this study, we investigate the performance of a boost converter regulating its output voltage using two control methods: Proportional-Integral (PI) control and neural control. Both methods are implemented on a simulation platform (Matlab/Simulink) and evaluated in terms of accuracy, response speed, and robustness to disturbances. Indeed, the output voltage of converters exhibits imperfections that require a control method to optimize efficiency when applying a variable load. Results show that neural control offers superior performance in terms of accuracy and response time, with faster and more precise regulation of the output voltage. On the other hand, PI control proves to be more robust against disturbances. These findings can help guide the selection of the appropriate control method for a boost converter based on the specific requirements of each application.

关键词： chopper PI Control Neural Control

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逍遥的骑士浮夸的chopper

摩托车信息 2016年第6期 90-91页

作者： Sugar

Get your motor running让你的发动机动起来Head out onthehighway驰骋在高速公路上Lookin＇for adventure寻求冒险之旅Inwhatever comes ourway无论前方发生什么Yeah,darlin＇,gonna make it happen耶亲爱的去有所作为吧Take the world in a love embrace让世界投入爱的怀抱……周末,搭朋友的车出游。一路上,车里的音乐就这么随机播放着,大家哼哼唱唱,有说有笑。＂这是哪首歌？＂听着陌生的前奏,邻座的朋友问道。＂《Born To Be Wild》,电影《逍遥骑士》的主题曲。＂还没等我说出口,坐在副驾的朋友扭过头脱口而出。

关键词：逍遥骑士 happen chopper comes running 前叉哈雷呼啸而过乐就竞速

基于Matlab的Boost-Buck chopper的建模与仿真

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信息技术 2012年第2期36卷 97-100页

作者：孟庆波崔刚郑州铁路职业技术学院电气工程系郑州450052

对Matlab进行了简单介绍,建立了IGBT的仿真模型,运用Matlab/Simulink和PowerSystem工具对Boost-Buck chopper进行建模、参数选择和仿真分析。与常规电路分析方法相比,该方法具有很大的优越性。

关键词： Matlab Simulink Boost-Buck chopper 建模仿真

双馈风电变流器单chopper低电压穿越策略测试

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东方电气评论 2020年第3期34卷 1-4,19页

作者：边晓光王正杰舒军周宏林刘江华东方电气集团科学技术研究院有限公司成都611731 东方电气风电有限公司四川德阳618099

低电压故障下的双馈风电机组(DFIG)常利用撬棒等硬件设备来泄放瞬间过高的转子电流,以保护变流器并实现低电压穿越(LVRT)。本文探讨了一种双馈风电变流器单chopper低电压穿越策略的硬件设计和投切的控制算法,并在1.5 MW双馈风电变流器... 详细信息

低电压故障下的双馈风电机组(DFIG)常利用撬棒等硬件设备来泄放瞬间过高的转子电流,以保护变流器并实现低电压穿越(LVRT)。本文探讨了一种双馈风电变流器单chopper低电压穿越策略的硬件设计和投切的控制算法,并在1.5 MW双馈风电变流器样机中按照国标要求进行了低电压穿越测试。结果表明,合适的单chopper低穿组件设计配合合理的投切控制策略可以使双馈风电变流器具备完整的低穿能力,并且能大幅优化双馈变流器的低穿组件硬件成本。

关键词：双馈风电机组 chopper 低电压穿越投切控制算法

Study of the design of CSNS MEBT

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Chinese Physics C 2009年第7期33卷 583-589页

作者：欧阳华甫刘华昌傅世年 Institute of High Energy Physics CAS

The design of CSNS MEBT has two objectives：（1） to match the beam both in the transversal direction and the longitudinal direction from RFQ into DTL;（2） to further chop the beam into the required time structure asked by RCS. It is very diffcult and critical to control well the emittance growth and in the meantime to match and chop the beam. Firstly,the optical design is done and optimized,and the multi-particle simulations show that the maximum emittance growth is successfully controlled within 14%. Secondly,based on the different beam envelopes obtained by TRACE-3D and PARMELA,the least deflecting angle of the chopper is determined by TRACE-3D. At last,the field of steering magnet is determined through simulations.

关键词： MEBT chopper match beam envelope emittance growh central orbit

Micro-arc Oxidation Inverter Power Supply Based on the Limited Bipolar Soft-switch Control Method

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Chinese Journal of Mechanical Engineering 2009年第3期22卷 390-394页

作者： ZENG Min CHEN Xiaohong CAO Biao School of Mechanical and Automotive Engineering South China University of Technology Guangzhou 510640 China

In order to overcome many limitations of the conventional power supplies, such as ponderosity, big wastage, and simplex output characteristic, a dual-inverter power supply is designed to meet the different requirements of micro-arc oxidation. The main circuit structure and principle of the dual-inverter power supply for micro-arc oxidation is described, the control system and the control adjustment method are also introduced. The dual-inverter technology is adopted in micro-arc oxidation power supply. The limited bipolar control mode is applied in the power inverter circuit for adjusting the voltage, and various voltage waveform can be obtained by controlling the chopper circuit. Meanwhile, the control accuracy and response speed are improved greatly because of the higher inverter frequency. The power supply can output direct current（DC） waveform, DC pulse waveform, symmetry alternating current（AC） waveform, asymmetry AC waveform, and so on. Besides, the parameters such as pulse width, range, frequency, duty cycle can be adjusted. The experimental result shows that the power supply has many advantages, such as stable output, wonderful waveform consistency and obvious advantage in technique, and it can meet the requirements of micro-arc oxidation process fully.

关键词： micro-arc oxidation power supply inverter chopper limited bipolar

Design of the low energy beam transport line for the China spallation neutron source

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Chinese Physics C 2008年第3期32卷 227-231页

作者：李金海欧阳华甫傅世年张华顺何伟 Institute of High Energy Physics CASBeijing 100049China

The design of the China Spallation Neutron Source （CSNS） low-energy beam transport （LEBT） line, which locates between the ion source and the radio-frequency quadrupole （RFQ）, has been completed with the TRACE3D code. The design aims at perfect matching, primary chopping, a small emittance growth and sufficient space for beam diagnostics. The line consists of three solenoids, three vacuum chambers, two steering magnets and a pre-chopper. The total length of LEBT is about 1.74 m. This LEBT is designed to transfer 20 mA of H-pulsed beam from the ion source to the RFQ. An induction cavity is adopted as the pre-chopper. The electrostatic octupole steerer is discussed as a candidate. A four-quadrant aperture for beam scraping and beam position monitoring is designed.

关键词： CSNS LEBT chopper steerer space charge

Influence of the photon beam position on incident SR intensity at the SXMCD endstation

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Chinese Physics C 2013年第12期37卷 114-118页

作者：郭玉献徐彭寿 Department of Mathematics & Physics Anhui University of Architecture National Synchrotron Radiation Laboratory University of Science & Technology of China

A small fluctuation of the photon beam position will affect the intensity and polarization characteristics of synchrotron radiation （SR） when it enters an endstation through the related beamline. In this paper, by changing the electron orbit equilibrium position in the vertical direction, we have measured the corresponding changes in the absorption strength of the SR with a gold mesh in different chopper aperture positions. It is found that for three aperture positions, the absorption intensity of the gold mesh shows a good Gaussian distribution as the photon beam position moves, while the ratio of the SR intensity passing through the upper and lower apertures shows a monotonous variation. This suggests a new method for estimating the circular polarization degree of SR originating from the bending magnet based on our current measurement.

关键词： polarization degree measurement chopper synchronous radiation (SR) X-ray magnetic circular dichro-ism (XMCD) X-ray absorption

The design and construction of a pulsed beam generation system based on high intensity cyclotron

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Science China(Physics,Mechanics & Astronomy) 2011年第S2期54卷 210-213页

作者： AN ShiZhong YIN ZhiGuo LI PengZhan SONG GuoFang WU LongCheng GUAN FengPing XIE HuaiDong JIA XianLu LU YinLong ZHANG TianJue China Institute of Atomic Energy Beijing 102413China

In order to perform the studies on a pulsed beam generation system based on a high intensity cyclotron, a test beam line with a pulsed beam generation for a 10 MeV compact cyclotron (CYCIAE-10) has been designed and constructed at China Institute of Atomic Energy (CIAE). A 70 MHz continuous H- beam can be pulsed to the pulse length of less than 10 ns with a repetition rate of 4.4 MHz. The sine waveform with a frequency of 2.2 MHz is adopted for the chopper and a mesh structure with single drift and dual gaps is used for the 70 MHz buncher. A helical resonator is designed and constructed based on simulations and experiments on the RF matching for the chopper. A helical inductance loop that is exceptionally large of its kind and equipped with water cooling for the resonator has been successfully wound and a 500 W solid RF amplifier has been manufactured. A special measuring device has been designed, which can be used to measure both the DC beam and the pulsed beam. The required pulsed beam was obtained after pulsed beam tuning.

关键词： beam pulsing chopper buncher RF matching

The design and construction of a pulsed beam generation system based on high intensity cyclotron

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The design and construction of a pulsed beam generation syst...