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A021 电力 电子 实验 仿真 设计 开发

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浙江工业大学浙西分校信息与电子工程系毕业设计（论文）Development of modern electric electron and power technologyModern power technology to use electric and electronic semiconductor device, utomatically control synthetically , computer (microprocessor ) technology and electromagnetic multi-disciplinary edge of technology pay and technology. Play a key role in the power of various kinds of high quality , high-efficient , high dependability , it is the concrete application of the modern electric and electronic technology. At present, the electric electron is regarded as energy-conservation , festival just, automation , intelligent, foundation that the electromechanics is integrated, develop in high frequency of application technology , hardware structure module , green direction of properties of product. In the near future, , economy , practical that electric and electronic technology will make the technology of the power riper, realize that with high efficiency and combining together high-qualitily with the electricity.Development trend of the high-frequency switch powerIn the application in electric and electronic technology and various kinds of power systems, the power technology of the switch is in the key position . As to electroplating the power large-scaly and electrolytically, the traditional circuit is very huge and cumbersome, if it is high to adopt switch power technology once, its volume and weight will all drop by a large margin , and can improve the utilization efficiency of the power , save materials , lowering costs greatly . In the electric automobile and frequency conversion are transmitted, it is due to the power technology of the switch even more, change power consuming frequency through the switch power , thus reach almost ideal load and match and drive controlling. Power technology of the high-frequency switch, it is the key technology of various kinds of high-power switch power (go against and turn into welder , communication power , high frequency and heat the power , laser instrument power , electric operating power etc. ) even more.Communication uses the high-frequency switch power. The rapid development of communication industry has promoted the development of communication power greatly. The switch power and technology of high-frequency miniaturization have already become the mainstream of the electric power system of modern communication. Among communication field, call rectifier one power usually, and direct current- direct current (DC/DC) changer call the power 2 times. One function of power single-phase or three phases exchange electric wire netting is it mark person who claim for direct current source of 48V to vary. In once power that the program-control exchanger uses at present,Traditional own to replace high-frequency switch power steady voltage plug of accusing of etc., high-frequency switch power (call switch rectifier SMR too ) work through MOSFET or high frequency of IGBT, the frequency of the switch is generally controlled within the range of 50-100kHz, realize the high efficiency and miniaturization. In recent years, the capacity of power of the switch rectifier is expanding constantly, the unit is own from 48V/12 in capacity. 5A , 48V/20A are expanded to 48V/200A , 48V/400A.Because integrated circuits used are various in style in the communication equipment, its voltage of power has nothing in common with each other, adopt high-frequency DC-DC of the density of high power to isolate the power module in the communication electric power system , various kinds of direct currents needed are pressed to vary from voltage of middle bus bar (generally for 48V direct current ), in this way , can reduce and loss , convenient safeguarding greatly , and it is very convenient to install , increase. Generally mounted on control panel of the standard directly , the requisition for power two times is the density of high power. Because the constant increase of the capacity of communication, the capacity of the communication power will increase constantly.1High frequencyTheory between analysis and practical experience indicate electric voltage transformer, inductance, volume of electric capacity of product weight in inverse proportion to square root of power supply frequency. So 50Hz bring 20kHz up to frequently from worker frequency as us, raise time of, volume weight , power consuming of equipment drop to 5 that the worker designed so l0% frequently. No matter go against the becoming type rectification welder , or the switch type rectifier that the communication power used, all on the basis of this principle. Same, tradition rectification trade electroplate , electrolytic , electric machining , charge , is it charge to float, electricity shut floodgate can go on the transformation with ,etc. various kinds of direct current power according to this principle too, becoming the switch varying type power , its main material can economize 90% or higher , can also economize on electricity by 30% or more . Because the gradual improvement of the electronic device operating frequency upper limit of the power, impel a lot of traditional high-frequency equipment solid state that adopted the electron tube originally, bring remarkable energy-conservation, economize on water, economizing the economic benefits of the material, can reflect the value of the technological content even more.2ModuleThe module has meaning of two respects, first refer to the module of the power device, second refer to the module of the unit of the power . Our common device module , contain between Entrance one , Entrance two , Entrance six and Entrance seven, including the device of the switch and the diode has flowed with its parallel instead one continuouslying is all the power module (SPM ) of standard in fact. In recent years, some companies protect the drive of the device of the switch the circuit is put into the power module too, having formed intelligent power module (IPM ) , not only has narrowed the volume of the complete machine, furthermore has helped the design of the complete machine make. In fact, because frequency constant to raise, cause lead wire parasitic inductance , depend on to have more serious influences electric capacity for a living, lead to the fact heavy electric stress to device (show as the overvoltage , the electric current burr passes). For improve systematic dependability, some manufacturer develop special-purpose user have power module(ASPM), it all hardwares install reach a piece of module in the form of chip nearly one complete machine, make the components and parts no longer have traditional lead wire that is joined , such module , through the design of strict , rational hot , electricity , machinery, reach and optimize the perfect condition. Special-purpose integrated circuit of user that it is similar to in microelectronicses (ASIC ). So long as write controlling the software into the microprocessor chip in this module , and then fix the whole module on corresponding radiator, form a new-type switch power device . Therefore, the module purpose not merely lies in being easy to use, narrow the whole organism to accumulate, the more important thing is that cancels the traditional line , it is minimum to bring the parasitic parameter down to, thus it is lowest to drop the electric stress that the device bears to, improve systematic dependability . In addition, the switch power of high-power, because of the limitations of capacity of the device with increasing the redundant consideration which improves dependability, generally adopt a lot of independent module units to connect in parallel and work , adopt and flow technologically, all module share the load current together, once a certain module loses efficiency among them, other module shares the load current equally. In this way , not only has improved the capacity of power , has responded to the request that the large electric current is exported in case of limited capacity of device, and pass and increase the redundant power module very small in power as to whole system, the great systematic dependability of improvement, even in case the trouble of the single module appears, will not influence the normal work of the system either , and offer abundant time for repairing.1.3DigitizationIn the electronic technology of the traditional power, control and is designed and worked according to the analog signal partly. In six , the seventies, electric and electronic technology is totally set up on the basis of imitating the circuit. However, the digital signal, digital circuit seem more and more important now, the treatment technology of the digital signal is perfected day by day riply, demonstrate more and more advantages : The convenient computer deals with and controls, prevent from distortion of analog signal distorted reducing stray interference (improve anti-interference ability ) , convenient software package debugging and telemetering measurement distant to adjust remote sensing of signal, benefit technology of diagnose , fault-tolerant by oneselfing etc. to plant into too. So, in eight , the 1990s, to the designs of all kinds of circuit and system, simulation technology is still useful, especially: Print Butut , electromagnetic getting compatible problem and power factor person who revise settlement of problem that make a plate, it is due to the knowledge of the simulation technology, but to the intelligent switch power, need leaving in digitized technology when the computer control.1.4GreenThe green of the power system has meaning of two layers: Economize on electricity notably at first, this is it generate electricity thrift of capacity to mean , is it cause important reason of environmental pollution to generate electricity, so economizing on electricity can reduce the pollution of the environment ; It is secondly the power can (or not the little) to lasting pollution electric wire netting,make International Electrotechnical Commission (IEC ) to this by a series of standard, for instance IEC555 , IEC917 , IECl000 ,etc. Whether in fact, a lot of power electron economize on electricity equipment, can turn pollution sources in electric wire netting into often. Inject serious high times of in harmony wave electric current into to electric wire netting , make total power factor drop, make electric wire netting voltage coupling a lot of burr spike , even lack the horn and distortion. At the end of the 20th century, various kinds of schemes of active wave filter and active compensator were born, there is factor method of the power of many kinds of revision. These establish the foundation that 2l century produces various kinds of green switch power products in batches.Modern electric and electronic technology is a foundation of the power technical development of the switch. Suitable for with new-type electric electronic device high switch circuit of frequency a topological one constant to appear, fast development under a push of an actual need that the technology of the modern power will be here . Under traditional application technology, enabling turning on or off the performance of the power because of restriction of the device performance of the power influences. In order to give play to the characteristics of different power devices greatly , make the impact on power performance of the switch of the performance of the device reduce to minimumly , new-type power circuit topological and new-type control technology, can make power is it work in zero voltage or zero electric current state to turn on or off, thus very big improvement operating frequency, i