簡單介紹了三相SPWM逆變器的組成和工作原理，通過計(jì)算機(jī)對三相SPWM逆變器進(jìn)行Matlab/Simulink建模和仿真，研究逆變電路的輸入輸出及其特性。仿真分析經(jīng)逆變后得到的電壓電流的特性。通過運(yùn)用Matlab/Simulink和Power System Block（PSB）電力系統(tǒng)模塊集工具箱仿真環(huán)境，對電路進(jìn)行建模、計(jì)算和仿真分析。MATLAB軟件中的Simulink，是為數(shù)不多的完全滿足這些條件和要求的軟件。并且憑借他在科學(xué)計(jì)算方面的天然優(yōu)勢建立了從設(shè)計(jì)構(gòu)思到最終實(shí)現(xiàn)設(shè)計(jì)要求的可視化橋梁。被廣泛應(yīng)用于線性系統(tǒng)、非線性系統(tǒng)及數(shù)字信號(hào)處理的建模和仿真中。
標(biāo)簽： SPWM 三相 逆變器 調(diào)制
上傳時(shí)間： 2013-11-12
上傳用戶：yulg
We provide complete power solutions with a full lineup of power managementproducts. This brochure provides an overview of our high performance DC/DC switching regulatorcontrollers for applications including datacom, telecom, industrial, automotive, medical, avionicsand control systems. We make power design easier with our industry-leading field applicationengineering support; a broad selection of demonstration boards with schematics, layout filesand parts lists; SwitcherCAD® software for simulation, application notes and comprehensivetechnical documentation.
上傳時(shí)間： 2013-10-15
上傳用戶：lz4v4
In industrial applications, high voltage power supply spikes with durations ranging from a few microseconds to hundreds of millisecondsare commonly encountered. The electronics in these systems must not only survive transient voltage spikes, but in many cases alsooperate reliably throughout the event.
標(biāo)簽： 電信 數(shù)據(jù)通信 工業(yè) 電源產(chǎn)品
上傳時(shí)間： 2013-11-07
上傳用戶：redmoons
返馳式(Flyback) 電源供應(yīng)器是交換式電源設(shè)計(jì)供應(yīng)器(Switch Power Supply，SPS)的一種，為工業(yè)界常用之電路架構(gòu)，其特點(diǎn)如下表所示，圖一所示為返馳式轉(zhuǎn)換器(Flyback Converter)電路。 一般設(shè)計(jì)SPS需要一些保護(hù)來提高系統(tǒng)設(shè)備之穩(wěn)定安全，尤其是輸出過電壓保護(hù)極為重要，這個(gè)輸出過電壓保護(hù)目的是防止電氣設(shè)備上的元件之絕緣遭受過電壓的破壞。一般過電壓的測試方法是將回授Open讓系統(tǒng)呈現(xiàn)段回路狀況，導(dǎo)致一次側(cè)能量無限制提供給二次測來達(dá)到輸出過電壓現(xiàn)象。
標(biāo)簽： 可調(diào)式 保護(hù)IC 輸出 方案
上傳時(shí)間： 2013-11-06
上傳用戶：haoxiyizhong
計(jì)算機(jī)的ATX電源脫離主板是需要短接一下20芯接頭上的綠色（power on）和黑色（地）才能啟動(dòng)的。啟動(dòng)后把萬用表撥到主流電壓20V檔位，把黑表筆插入4芯D型插頭的黑色接線孔中，用紅表筆分別測量各個(gè)端子的電壓。樓上列的是20芯接頭的端子電壓，4芯D型插頭的電壓是黃色＋12V，黑色地，紅色＋5V。 主板電源接口 圖解 20-PIN ATX主板電源接口
上傳時(shí)間： 2013-10-28
上傳用戶：蔣清華嗯
Abstract: This application note illustrates an intermediate 8V switching power supply for an automotive radio and infotainment system.The design withstands the complete automotive input voltage range (including cold crank and load dump conditions), assuring a stable8V supply for common subsystems such as a CD driver, LCDs, and a radio module in modern infotainment systems. To avoiddisturbance in the AM and FM bands, the switching power supply runs at a fixed frequency of 2MHz, enabling an ideal solution forradio systems.
標(biāo)簽： 汽車無線電 信息娛樂系統(tǒng) 開關(guān)電源
上傳時(shí)間： 2013-11-20
上傳用戶：feitian920
Abstract: We don't expect manufacturers to produce clothes that in one size that fits everyone. In thesame way, one ESD component can't solve all issues—each application has different ESD requirements.Knowing that "one size fits all" cannot apply to power design, the power designer, or the engineering"super hero," must consider all the potential disruptions to a steady flow of power and thenvarious waysto mitigate them. This tutorial describes voltage- and current-limiting devices and risetime reducers tomanage the power. It also points to free and low-cost software tools to help design lowpass filters, checkcapacitor self-resonance, and simulate circuits.
標(biāo)簽： 電源工程師 電路設(shè)計(jì)
上傳時(shí)間： 2013-11-18
上傳用戶：zhouxuepeng1
Abstract: Impedance mismatches in a radio-frequency (RF) electrical transmission line cause power loss andreflected energy. Voltage standing wave ratio (VSWR) is a way to measure transmission line imperfections. Thistutorial defines VSWR and explains how it is calculated. Finally, an antenna VSWR monitoring system is shown.
標(biāo)簽： VSWR 輸電線路 精確測量 電壓駐波比
上傳時(shí)間： 2013-10-19
上傳用戶：yuanwenjiao
Abstract: This document details the Oceanside (MAXREFDES9#) subsystem reference design, a 3.3V to 15V input,±15V (±12V) output, isolated power supply. The Oceanside design includes a high-efficiency step-up controller, a36V H-bridge transformer driver for isolated supplies, a wide input range, and adjustable output low-dropout linearregulator (LDO). Test results and hardware files are included.
標(biāo)簽： 隔離電源 設(shè)計(jì)手冊
上傳時(shí)間： 2013-10-12
上傳用戶：jinyao
Abstract: Some power architectures require the power supply sequencer (or system manager) to controldownstream power MOSFETs to allow power to flow into branch circuits. This application note explains howsystem power sequencing and level shifting can be accomplished using a low-voltage system manager
標(biāo)簽： MOSFET 電平轉(zhuǎn)換 控制 功率
上傳時(shí)間： 2013-11-02
上傳用戶：wys0120
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