毕设论文--24V交流单相在线式不间断电源硬件设计(汤炜).doc
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1、In order to ensure normal teaching order, protecting students healthy growth, ensuring that national (property) is not lost, to prevent or minimize the occurrence of safety accidents, follow the prevent, rescue each other, ensure safety and reduce losses principle, according to the local conditions,
2、 make the management system. 1, the principal is the responsibility of school safety, school security under the leadership of President security work leading group. The head teacher to the leadership team is responsible for, implementation of the accountability system. 2, school monthly student know
3、ledge about safety education, education should be diversified in the form every safety education for students of classes per week should be targeted. To carry on emergency issues dealing with education in General, self-help and mutual rescue knowledge. Emergency calls (such as 110, 119, 122, 120, an
4、d so on) use common sense in education. 3, the establishment of major accident reporting system. School students report major accident within an hour of education; student run and disappearances to report; report of the accident to a written report in triplicate, a correctional centre, a police stat
5、ion, a township peoples Government shall not conceal the accident. 4 week, teachers are on duty system, establish and improve the leadership values; strengthen the education, management of teaching activities in schools to ensure normal teaching order; responsible for school safety leadership always
6、 maintained close contact and district police stations, canvassing support from the police station on school safety and help. 5, strengthening teachers moral education, establish a dedicated love, improving education quality, observe the students psychological changes at any time and take preventive
7、 measures, no corporal punishment and covert corporal punishment on students, student out of the classroom, schools may not be. 6, units or departments use student Street propaganda or participate in the celebrations, as well as participating in other social work, without approval of the Correctiona
8、l Centre, school principals consent, without organization. Without the approval of relevant departments, may organize students to participate in fire fighting, disaster relief and so on. 7, schools should educate students to obey the school rules and regulations, on time, on time home to prevent acc
9、idents. 8, school to school inspections on a regular basis, found hidden in time, and in severe cases, it is hard to eliminate immediately closed, and reported to the local peoples Government, education, and rule of law section. 9, the school should always check the internal walls, retaining walls,
10、ponds, railings, handrails, doors, Windows, staircases and a variety of sports, extracurricular activities, facilities such as fire safety, infrastructure security, unsafe facility to immediately repair and demolition to ensure that teachers and students work, learn, live venues and facilities are s
11、afe and reliable. Song Lin Xiang Liu Jia ping elementary school March 2016 song Lin Xiang Liu Jia ping primary school fire safety systems to enhance fire safety, protection of public property and the life and property safety of teachers and students, school fire safety into day-to-day management, is
12、 developing the following fire safety system. 1, strengthen fire safety education of the whole school. According to the requirements of the Fire Services Act, so that everyone has of keeping fire control safety, protecting fire control facilities, fire prevention, reports of fire浙 江 理 工 大 学毕业论文(设计)诚
13、信声明我谨在此保证:本人所写的毕业论文(设计),凡引用他人的研究成果均已在参考文献或注释中列出。论文(设计)主体均由本人独立完成,没有抄袭、剽窃他人已经发表或未发表的研究成果行为。如出现以上违反知识产权的情况,本人愿意承担相应的责任。声明人(签名):年 月 日摘 要UPS(Uninterruptible Power Supply)是一种储能装备,可以连续不断地向一些用户的关键设备(铁路和民航的售票系统、互联网数据中心、医院的生命维护设备、银行的清算中心等)提供频率稳定、精度高、失真度小的高质量正弦波电源。传统的逆变电源多为模拟控制,虽然模拟控制技术已经非常成熟,但模拟电路存在电路复杂,体积庞大
14、,不够灵活,一致性差,不便于调试,产品升级困难等缺点。伴随着DSP、高速MCU的出现,使逆变电源的数字化控制成为现实,数字化控制也成为了UPS未来发展的一大趋势。本文对50Hz逆变电源数字化控制的实现做出了详细的介绍。论文通过建立逆变器的模型,对SPWM的数学模型进行了理论分析。提出了基于dsPIC30F2010芯片的单相SPWM逆变电源的数字控制技术的硬件设计。本文还对该系统的硬件设计部分做出了详细地介绍分析,并对硬件系统进行了调试,对调试结果进行了数据分析,同时对于调试过程中出现的问题进行了进一步工作的展望。系统采用单相全桥逆变电路,输出电压24V,额定电流1A,开关频率为20kHz。利用
15、采样输出电压闭环实现了系统的数字化控制,输出特性基本满足要求。关键词:逆变器;不规则采样法;数字控制;DSC;滤波ABSTRACTUPS(Uninterruptible Power Supply) is a kind of energy storage equipment, can continuously provide sine wave power of frequency stability, high precision, small distortion degree of for users key equipment, such as railway and civil avi
16、ations ticketing system, internet data center, the hospitals life of maintenance equipment, bank settlement center, and so on. Most of traditional inverter power supplies are analog-control. Although analog-control technology has already been very ripening, but the analog circuit existsmany shortcom
17、ings, as circuits over complexity, large volume,unflexible, poor-consistency, unconvenient for debug, difficulty in product upgrades. With the emergence of DSP, high-speed MCU,the digital control of inverter power supply has become a reality, digital control has also become a trend in the future dev
18、elopment of the UPS.This paper carries out a detailed introduction on the digital control of 50Hz inverter power supply.By establishing the inverter power supply model,the paper make a analyzed theoretically in the mathematical model of SPWM. This paper puts forward a kind of hardware design for the
19、 single-phase SPWM inverter digital control technology which is based on the dsPIC30F2010. The paper also makes a detail analysis of the systems hardware designing part, and the debugging of hardware, the data analyses for the debugging results.Meanwhile,this paper conducts a prospect of the further
20、 work based on the problems during the debugging process. The hardware system uses the SPWM-FBI, output voltage 24V, rated current 1A, and switch frequency by 20kHz.The system carry out the digital control by sampling output voltage closed-loop. The output characteristic basicly achieve requirements
21、.Keywords: inverter; irregular sampling method; digital control; DSC; filteringElectricity lines, equipment inspections, found hidden in time for rectification, maintenance, and security. 9, do not use an open flame in the classroom, prohibit burning stove, lit candles, mosquito repellent, no smokin
22、g, and banning messy wiring. Without using any household appliances is not allowed. 10, live on campus faculty members, must lead by example, and educate families and children ready to fire. 11, household use of gas in schools, to master proper usage, pay attention to the leak-proof, explosion-proof
23、, fireproof, closing valve after use to ensure security. 12, dining room must be qualified, and annual testing of pressure vessels, to regularly check, the canteen workers must be certified, strictly by operation operation, gas tank and stove safety distance of 1.5 meters, to prevent accidents. 13,
24、the adverse consequences caused by ignoring fire safety regulations, will be punished, until investigated for legal responsibility. Song Lin Xiang Liu Jia ping elementary school March 2016 Xiang Liu Jia ping elementary school, pine slopes surrounding safety management system 1 teachers and students,
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- 论文 24 交流 单相 在线 不间断电源 硬件 设计 汤炜
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