power supply systems design

... 1—CLASSIFICATION OF THE POWER QUALITY PROBLEMS TO BE SOLVED BY THE UPS SYSTEMS the power supply for several seconds POWER LINE PROBLEMS WAVEFORM IEC62040-3 UPS SOLUTION These systems, due to their ... — Rotary UPS from SatCon Power utility mains and the critical Systems (Courtesy of SatCaon Technology loads When a power failure Corporation.) Types of UPS Systems UPS systems are generally classified ... N OWADAYS, UNINTERRUPTIBLE power supply (UPS) systems are in use throughout the world, helping to supply a wide variety of critical loads, such as telecommunication systems, computer sets, and...

Ngày tải lên: 26/11/2015, 09:42

... are used as design examples by various manufacturers and subsequently overused by novice power supply designers Nonisolatedtype configurations seldom are used by seasoned power supply designers ... Switching Power Supply Topologies 29 As in all power supply designs it is better to suppress any transient before it enters the supply Once again this topology is not typically used by experienced power ... MiscellaneousTopics I I5 I Power Supply and System Grounds I15 9.2 The Use and Design of Clamps and Snubbers I I9 9.3 RFI and EM1 Design Considerations 125 9.4 Power Supply and Product Safety...

Ngày tải lên: 18/04/2014, 12:25

... computer logic circuit design using transistors and switching power supply design, respectively Mr Pressman was the author of the first two editions of Switching Power Supply Design Keith Billings ... 259 xv xvi Switching Power Supply Design 6.6 Low Output Power “Housekeeping” or “Auxiliary” Topologies—Introduction 6.6.1 Housekeeping Power Supply on Output or Input ... an independent power supply engineer and consultant and previously worked in switchmode power supply development at Varian Canada in Georgetown and Hammond Manufacturing and GFC Power in Guelph,...

Ngày tải lên: 08/08/2014, 06:20

... INVESTIGATIONS INTO DESIGN AND CONTROL OF POWER ELECTRONIC SYSTEMS FOR FUTURE MICROPROCESSOR POWER SUPPLIES Ravinder Pal Singh (B.Tech(Hons), IIT Kharagpur, ... provides power to the chip These circuits are collectively referred to as Voltage Regulator Modules (VRMs) Chapter 1: Introduction Normally the VRMs supplying power to the microprocessors derive power ... regulator module (VRM) design Due to stringent regulation requirements, the design of next generation VRMs need a thorough understanding of the performance and design trade-os The supply voltage of...

Ngày tải lên: 11/09/2015, 10:06

... these requirements PEBB is a new paradigm in designing power electronic systems, it increases the power density and power power quality, user-friendly design, multifunctionality, and reliability ... of power supply and two identical UPECs under load change from 1000 watt to 1600 watt Input currents of power supply and two nonidentical UPECs Input currents of power supply ... high-reliability, easy to use and maintain power electronic systems is fueling the drive for integration and standardization of modern electronic power supply The development of power electronic block building...

Ngày tải lên: 29/09/2015, 12:52

... centralized power system with a single high power converter may not be optimal for the systems of the future New trends in the field of high and medium power systems use Distributed Power Systems ... modern power systems lack a high degree of integration and standardization [16] Power electronics products are essentially custom-designed, with a long design cycle time The equipment is designed ... electronic power supply industry the opportunity to develop a standardized modular approach to power processing One of such approach is the use of Power Electronic Building Blocks (PEBB) Power electronic...

Ngày tải lên: 29/09/2015, 12:55

... PIC16HV785 with an on-chip 5V shunt regulator for powering the microcontroller and associated circuitry So, the power conversion section of the power supply design is comprised of the two feedback loops, ... loop So, in general, the current feedback path of this design is very similar to the current feedback path of a discrete switching power supply design However, there are a few notable differences: ... MPLAB Certified logo, MPLIB, MPLINK, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total...

Ngày tải lên: 11/01/2016, 16:38

... severe in embedded systems than in desktop systems Embedded systems often have power constraints Embedded systems often must operate under extreme environmental conditions Embedded systems have far ... from host-based software design In other words, what you when there is no printf() or malloc()? Because this is a book about designing embedded systems, I will discuss design issues — but I’ll ... system resources than desktop systems Embedded systems often store all their object code in ROM Embedded systems require specialized tools and methods to be efficiently designed Embedded microprocessors...

Ngày tải lên: 16/08/2012, 09:40

... trực tuyến để tìm số cần thiết ví dụ như: - http://www.jscustompcs.com /power_ supply/ - http://www.mymp3car.com/MP3Car/PSUpower.asp Trong thực thế, Khi đem hệ thống thuộc dạng mạnh đưa thử nghiệm ... thiết bị với tổng công suất khoảng 430w vào nguồn có số Continuous Power 400w, chúng hoạt động khoảng thời gian ngắn mức Peak Power nguồn đạt 430w sau khoảng thời gian định, linh kiện nguồn bị ... ±10% -10.8V -13.2V +3.3VDC ±5% +3.14V +3.47V +5V SB ±5% +4.75V +5.25V 12 Chế độ Soft Power tín hiệu chờ 5v: Soft Power cách thức mà nguồn máy tính bật lên tắt Thay sử dụng công tắc cứng chuẩn AT...

Ngày tải lên: 01/11/2012, 16:38

... máy tính Bước Một lý cho việc PSU không hoạt động bạn chưa cắm đầu power switch Đầu power switch, thường đóng dấu PW PW_ON hay POWER SW, từ phía trước thùng máy đến mainboard Tuy nhiên, trường ... thử tắt máy khởi động lại Nếu máy khởi động lần thử thứ hai thứ ba tín hiệu Power_ OK (hoặc Power_ Good) Khi có tín hiệu Power_ OK, mainboard hiểu PSU ổn định, không mainboard không khởi động để tự ... cắm dễ bị bung ra) Vị trí cắm power switch in mainboard, bạn tham khảo tài liệu kèm với mainboard không tìm thấy chân cắm Bước Bạn khởi động cách chập hai chân nút power switch mainboard tua-vít,...

Ngày tải lên: 27/04/2013, 11:36

... scientific domains: Hydraulics, Hydrotransients, Hydropower, Pumping Systems, Leakage Control, Energy Efficiency and Renewable Energy Sources, Water Supply, Vulnerability More than 305 publications ... México, 154p 1994 [7] Almeida A B., Ramos H M., Water supply operation: diagnosis and reliability analysis in a Lisbon pumping system Jornal of Water Supply: Research and Technology – AQUA 59.1, 2010 ... E B and Streeter, V L Fluid Transients in Systems, Prentice Hall 1993 [12] Ramos, H Simulation and Control of Hydrotransients at Small Hydroelectric Power Plants PhD thesis, Technical University...

Ngày tải lên: 05/09/2013, 14:58

... help you to get a grasp of the issues that embedded system designers must deal with on a daily basis Knowing something about embedded systems will be a big help when you become a member of the ... a recent graduate Even if you aren’t studying embedded systems at UWB, reading this book can be important to your future career Embedded systems is one of the largest and fastest growing specialties ... reality Perry Keller first turned me on to the fun and power of the in-circuit emulator I’m forever in his debt Stan Bowlin was the best emulator designer that I ever had the privilege to manage I...

Ngày tải lên: 30/09/2013, 01:20

... severe in embedded systems than in desktop systems Embedded systems often have power constraints Embedded systems often must operate under extreme environmental conditions Embedded systems have far ... system resources than desktop systems Embedded systems often store all their object code in ROM Embedded systems require specialized tools and methods to be efficiently designed Embedded microprocessors ... range of hearing of the software designers If the overall system design is on a tight power budget, it is likely that the software design must be built around a system in which the processor is...

Ngày tải lên: 30/09/2013, 01:20

... TURN-OFF SWITCHING LOSSES III HIGH REPETITION PULSED POWER SUPPLY A Pulsed Current in High Repetition This switch can be applied to a power supply which supplies high-speed and high-repetition ... TAKAKU et al.: POWER SUPPLY FOR PULSED MAGNETS WITH MAGNETIC ENERGY RECOVERY CURRENT SWITCH Fig Turn-on waveforms ... Downloaded on November 26, 2008 at 00:02 from IEEE Xplore Restrictions apply TAKAKU et al.: POWER SUPPLY FOR PULSED MAGNETS WITH MAGNETIC ENERGY RECOVERY CURRENT SWITCH 1797 TABLE II PARAMETERS...

Ngày tải lên: 15/10/2013, 16:11

... of Use as given at the website Design Procedures: Part Design Procedures: Part 189 ASME, Power Piping Code, ANSI / ASME B31.1-1995 ASHRAE Handbook, 2000 HVAC Systems and Applications, Chap 11, ... Terms of Use as given at the website Design Procedures: Part 152 Chapter Six Figure 6.3 HTW end use, with cascading heat reclaim systems (see Chap 7) Heating systems exposed to subfreezing air ... first takeoff from the supply and continuing the return main parallel to the supply main with flow in both pipes in the same direction The return main increases in size as the supply main decreases...

Ngày tải lên: 17/10/2013, 22:15

... For a much more complete discussion of systems and subsystems, see Refs and at the end of this chapter Most packaged equipment includes control systems designed and installed by the manufacturer ... Several types of energy are used in control systems Most older HVAC systems use pneumatic devices, with low-pressure compressed air at to 20 lb/in2 gauge Many systems are electric, using 24 to 120 ... as given at the website Design Procedures: Part Design Procedures: Part 241 Figure 8.22 Spiral bimetal mercury switch controller against the sensor action until the air supply valve closes at...

Ngày tải lên: 20/10/2013, 16:15

... at the website Design Procedures: Part Design Procedures: Part 221 ‘‘Steam Systems ’; Chap 11, ‘‘District Heating and Cooling’’; Chap 12, ‘‘Hydronic Heating and Cooling System Design ’; and Chap ... usually have supply water temperatures between 350 and 450ЊF This discussion also includes plants with a supply temperature between 250 and 350ЊF because the principles are similar These systems became ... and only a few design offices across the country, with personnel having HTW experience Chapter 14 of the 2000 ASHRAE Handbook, HVAC Systems and Equipment, discusses the topic A designer working...

Ngày tải lên: 20/10/2013, 16:15

... detailed and helpful information to assist designers However, designers must take care to ensure that they, and not the manufacturer, control the final system design References F Beseler, ‘‘Scroll ... The heat sink is air, water, or a process liquid Typically, small package systems use air-cooled condensers Large built-up systems use water-cooled or evaporative condensers, although large air-cooled ... is usually 10 to 20ЊF, although to 10ЊF is common for vapor compression systems and 15 to 20ЊF is common for absorption systems The approach is the Downloaded from Digital Engineering Library...

Ngày tải lên: 24/10/2013, 15:15

... elaborate makeup and feedwater systems Condensate, steam trap, fitting, and blowdown losses may be as much as 15 to 20 percent of steam capacity Some industrial plant systems are designed for 100 percent ... several hundred tons These systems typically use well water Two wells are used, one for supply and one for disposal One possible arrangement is shown in Fig 10.26 The supply and disposal wells ... there is a cost penalty for the power used In large boilers, the combustion improvement and control of the flame pattern are more important than the additional power cost About 30 years ago a...

Ngày tải lên: 24/10/2013, 15:15