毕业设计英文 翻译(原文).docx
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1、毕业设计英文 翻译(原文) 编号: 毕业设计(论文)外文翻译 (原文) 院(系):桂林电子科技大学 专业:电子信息工程 学生姓名: xx 学号: xxxxxxxxxxxxx 指导教师单位:桂林电子科技大学 姓名: xxxx 职称: xx 2022年x月xx日 Timing on and off power supply uses The switching power supply products are widely used in industrial automation and control, military equipment, scientific equipment, LE
2、D lighting, industrial equipment,communications equipment,electrical equipment,instrumentation, medical equipment, semiconductor cooling and heating, air purifiers, electronic refrigerator, LCD monitor, LED lighting, communications equipment, audio-visual products, security, computer chassis, digita
3、l products and equipment and other fields. Introduction With the rapid development of power electronics technology, power electronics equipment and peoples work, the relationship of life become increasingly close, and electronic equipment without reliable power, into the 1980s, computer power and th
4、e full realization of the switching power supply, the first to complete the computer Power new generation to enter the switching power supply in the 1990s have entered into a variety of electronic, electrical devices, program-controlled switchboards, communications, electronic testing equipment powe
5、r control equipment, power supply, etc. have been widely used in switching power supply, but also to promote the rapid development of the switching power supply technology . Switching power supply is the use of modern power electronics technology to control the ratio of the switching transistor to t
6、urn on and off to maintain a stable output voltage power supply, switching power supply is generally controlled by pulse width modulation (PWM) ICs and switching devices (MOSFET, BJT) composition. Switching power supply and linear power compared to both the cost and growth with the increase of outpu
7、t power, but the two different growth rates. A power point, linear power supply costs, but higher than the switching power supply. With the development of power electronics technology and innovation, making the switching power supply technology to continue to innovate, the turning points of this cos
8、t is increasingly move to the low output power side, the switching power supply provides a broad space for development. The direction of its development is the high-frequency switching power supply, high frequency switching power supply miniaturization, and switching power supply into a wider range
9、of application areas, especially in high-tech fields, and promote the miniaturization of high-tech products, light of. In addition, the development and application of the switching power supply in terms of energy conservation, resource conservation and environmental protection are of great significa
10、nce. classification Modern switching power supply, there are two: one is the DC switching power supply; the other is the AC switching power supply. Introduces only DC switching power supply and its function is poor power quality of the original eco-power (coarse) - such as mains power or battery pow
11、er, converted to meet the equipment requirements of high-quality DC voltage (Varitronix) . The core of the DC switching power supply DC / DC converter. DC switching power supply classification is dependent on the classification of DC / DC converter. In other words, the classification of the classifi
12、cation of the DC switching power supply and DC/DC converter is the classification of essentially the same, the DC / DC converter is basically a classification of the DC switching power supply. DC /DC converter between the input and output electrical isolation can be divided into two categories: one
13、is isolated called isolated DC/DC converter; the other is not isolated as non-isolated DC / DC converter. Isolated DC / DC converter can also be classified by the number of active power devices. The single tube of DC / DC converter Forward (Forward), Feedback (Feedback) two. The double-barreled doub
14、le-barreled DC/ DC converter Forward (Double Transistor Forward Converter), twin-tube feedback (Double Transistor Feedback Converter), Push-Pull (Push the Pull Converter) and half-bridge (Half-Bridge Converter) four. Four DC / DC converter is the full-bridge DC / DC converter (Full-Bridge Converter)
15、. Non-isolated DC / DC converter, according to the number of active power devices can be divided into single-tube, double pipe, and four three categories. Single tube to a total of six of the DC / DC converter, step-down (Buck) DC / DC converter, step-up (Boost) DC / DC converters, DC / DC converter
16、, boost buck (Buck Boost) device of Cuk the DC / DC converter, the Zeta DC / DC converter and SEPIC, the DC / DC converter. DC / DC converters, the Buck and Boost type DC / DC converter is the basic buck-boost of Cuk, Zeta, SEPIC, type DC / DC converter is derived from a single tube in this six. The
17、 twin-tube cascaded double-barreled boost (buck-boost) DC / DC converter DC / DC converter. Four DC / DC converter is used, the full-bridge DC / DC converter (Full-Bridge Converter). Isolated DC / DC converter input and output electrical isolation is usually transformer to achieve the function of th
18、e transformer has a transformer, so conducive to the expansion of the converter output range of applications, but also easy to achieve different voltage output , or a variety of the same voltage output. Power switch voltage and current rating, the converters output power is usually proportional to t
19、he number of switch. The more the number of switch, the greater the output power of the DC / DC converter, four type than the two output power is twice as large, single-tube output power of only four 1/4. A combination of non-isolated converters and isolated converters can be a single converter does
20、 not have their own characteristics. Energy transmission points, one-way transmission and two-way transmission of two DC / DC converter. DC / DC converter with bi-directional transmission function, either side of the transmission power from the power of lateral load power from the load-lateral side
21、of the transmission power. DC / DC converter can be divided into self-excited and separately controlled. With the positive feedback signal converter to switch to self-sustaining periodic switching converter, called self-excited converter, such as the the Luo Yeer (Royer,) converter is a typical push
22、-pull self-oscillating converter. Controlled DC / DC converter switching device control signal is generated by specialized external control circuit. the switching power supply. People in the field of switching power supply technology side of the development of power electronic devices, while the dev
23、elopment of the switching inverter technology, the two promote each other to promote the switching power supply annual growth rate of more than two digits toward the light, small, thin, low-noise, high reliability, the direction of development of anti-jamming. Switching power supply can be divided i
24、nto AC / DC and DC / DC two categories, AC / AC DC / AC, such as inverters, DC / DC converter is now modular design technology and production processes at home and abroad have already matured and standardization, and has been recognized by the user, but AC / DC modular, its own characteristics make
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