電力電子課程設(shè)計(jì)，請(qǐng)教做什么方面的相對(duì)比較有價(jià)值。

設(shè)計(jì)要求如下：

1.design a practical power converter越實(shí)際越好

The converter should be stable under feedback control, have appropriate input and output filters, and with components having adequate ratings.

2. Output power 大于12 W.

3. If you design a non-isolated converter, you have two options:

{ Use peak current control.

{ Use voltage mode control but the converter has to operate in discontinuous conduction mode.

4.If you design an isolated converter, you can use voltage control, but your feedback signals shouldn break the electrical isolation barrier.

5. All the components in your design must be commercially available.

6.畫出電路圖而且要layout 通過an automatic DFM (Design For Manufacturability) check.

我現(xiàn)在只是學(xué)了書本知識(shí)，沒有實(shí)際動(dòng)手經(jīng)驗(yàn)，這次的project也是個(gè)很好的鍛煉，我就是想請(qǐng)教大家我這個(gè)project取材方面的問題，做什么方面的power converter會(huì)比較好一點(diǎn)。project的時(shí)間是4月中旬結(jié)束。所以時(shí)間的把握也是一個(gè)問題。求助各位電源大蝦了！！

全部回復(fù)(7)

只看樓主

正序查看

倒序查看

zq2007

LV.11

2012-02-14 08:43

先來個(gè)Flyback。

回復(fù)

captainmao

LV.2

2012-02-14 11:45

@zq2007

先來個(gè)Flyback。

額，就flyback嗎。就是書上學(xué)的flyback還是需要其他什么。關(guān)于這個(gè)flyback老師在要求中關(guān)于元器件的選擇的時(shí)候有提到。

When possible , the component values should be entered as a range, a minimum,or maximum value to meet your design goal. Describe how the values of the components were selected. For example:

For the fly-back converter to remain in discontinuous conduction mode over the entire load range I need an transformer with a magnetizing inductance

LM 350 H. The magnetizing inductance used is of

L = 312H. This is the inductance of fly-back transformer wound on an RM-12 3F3 core with 12 turns of AWG14 wire in the primary as described below.

The inductor has a series resistance of RL = 115m. A plot of the V-I curve of the PDS760 schottky diode shows that over the operating range the diode has a constant forward drop of 0.6 V. At full load, these two components will have a total loss of 12 W. Hence, the eciency target of 90% at full load can be met by selecting a Mosfet that will lead to less than 5 W of losses. The IRF6674TRPbF

Mosfet will experience a total of 3 W of loss (1 W conduction loss) and meets the voltage requirements for this design.

回復(fù)

captainmao

LV.2

2012-02-15 01:21

額。有哪位大俠有好的想法嗎

回復(fù)

captainmao

LV.2

2012-02-16 02:02

額，可能因?yàn)槭怯⑽牡拇蠹覜]興趣看，那我把它翻譯一下。

本人研一，上電力電子設(shè)計(jì)課程最近需要做課程設(shè)計(jì)。本人背景：沒什么項(xiàng)目經(jīng)驗(yàn)，這是上的第二門電力電子課，只是學(xué)完了mohan的power electronics書和erickson 的fundamentals of power electronics。設(shè)計(jì)要求如下： 1，設(shè)計(jì)一個(gè)power converter,越實(shí)際越好 converter在反饋下要穩(wěn)定，要有合適的input and output filter, 選用元件要有合適的值

2. 輸出功率大于12 W.

3. 如果你設(shè)計(jì)non-isolated converter,你有兩個(gè)選擇: 1，用peak current control. 2，用電壓控制但是converter要工作在discontinuous conduction mode

4如果設(shè)計(jì)的是isolated converter, 你可以用電壓控制, 但是反饋信號(hào)不能破壞絕緣.

5. 所有元器件要能在網(wǎng)上買到.

6.畫出電路圖而且要layout 通過an automatic DFM (Design For Manufacturability) check.

回復(fù)

rainever

LV.8

2012-02-16 09:21

@captainmao

額，就flyback嗎。就是書上學(xué)的flyback還是需要其他什么。關(guān)于這個(gè)flyback老師在要求中關(guān)于元器件的選擇的時(shí)候有提到。Whenpossible,thecomponentvaluesshouldbeenteredasarange,aminimum,ormaximumvaluetomeetyourdesigngoal.Describehowthevaluesofthecomponentswereselected.Forexample:Forthe fly-backconvertertoremainindiscontinuousconductionmodeovertheentireloadrangeIneedantransformerwithamagnetizinginductanceLM350H.Themagnetizinginductanceusedisof L=312H.Thisistheinductanceoffly-backtransformerwoundonanRM-123F3corewith12turnsofAWG14wireintheprimaryasdescribedbelow.TheinductorhasaseriesresistanceofRL=115m.AplotoftheV-IcurveofthePDS760schottkydiodeshowsthatovertheoperatingrangethediodehasaconstantforwarddropof0.6V.Atfullload,thesetwocomponentswillhaveatotallossof12W.Hence,theeciencytargetof90%atfullloadcanbemetbyselectingaMosfetthatwillleadtolessthan5Woflosses.TheIRF6674TRPbFMosfetwillexperienceatotalof3Wofloss(1Wconductionloss)andmeetsthevoltagerequirementsforthisdesign.

這個(gè)連變壓器都算好了啊,flyback就是要整好變壓器

回復(fù)

bpyanyu

LV.8

2012-02-16 13:46

@captainmao

額，可能因?yàn)槭怯⑽牡拇蠹覜]興趣看，那我把它翻譯一下。本人研一，上電力電子設(shè)計(jì)課程最近需要做課程設(shè)計(jì)。本人背景：沒什么項(xiàng)目經(jīng)驗(yàn)，這是上的第二門電力電子課，只是學(xué)完了mohan的powerelectronics書和erickson的fundamentalsofpowerelectronics。設(shè)計(jì)要求如下：1，設(shè)計(jì)一個(gè)powerconverter,越實(shí)際越好converter在反饋下要穩(wěn)定，要有合適的inputandoutputfilter,選用元件要有合適的值2.輸出功率大于12W.3.如果你設(shè)計(jì)non-isolatedconverter,你有兩個(gè)選擇:1，用peakcurrentcontrol.2，用電壓控制但是converter要工作在discontinuousconductionmode4如果設(shè)計(jì)的是isolatedconverter,你可以用電壓控制,但是反饋信號(hào)不能破壞絕緣.5.所有元器件要能在網(wǎng)上買到.6.畫出電路圖而且要layout通過anautomaticDFM(DesignForManufacturability)check.我現(xiàn)在只是學(xué)了書本知識(shí)，沒有實(shí)際動(dòng)手經(jīng)驗(yàn)，這次的project也是個(gè)很好的鍛煉，我就是想請(qǐng)教大家我這個(gè)project取材方面的問題，做什么方面的powerconverter會(huì)比較好一點(diǎn)。project的時(shí)間是4月中旬結(jié)束。所以時(shí)間的把握也是一個(gè)問題。求助各位電源大蝦了！！

英文不太好，沒大看懂，建議你去國外論壇上問一下吧。

回復(fù)