开关电源效率能弄到0.98不是问题
我干的谐震开关电源,效率可达0.95以上(3000W),不久将来将用新理论做到0.98以上.有望达到开关电源的颠峰．想当初到处找工作没人要,就因为我毕业不久或不会抄板,很快是我的抬头日了．
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I think maybe 0.98 is possible efficiency for DC to DC converter.For AC-DC converter,I think even we adopt all of the advantage technologies,such as SR,resonant,and so on,the most efficiency 0.93 is the highest value. 0.98 efficiency is impossible,because even we omit other power dissipation,only consider the AC rectifier dissipation,under AC=90V,the line voltage drop is 2V at least,so we can calculate the efficiency is (90-2)/90=88/90=0.9778.
So we can judge it is impossible that AC-DC power supply can get more than 0.98 efficiency!!!!
In my opinion 0.9 is possible.But it is so difficult to increase the efficiency.
And I think we talk about these argumentation, condition is very important,without condition,nothing is impossible.Right?
So we can judge it is impossible that AC-DC power supply can get more than 0.98 efficiency!!!!
In my opinion 0.9 is possible.But it is so difficult to increase the efficiency.
And I think we talk about these argumentation, condition is very important,without condition,nothing is impossible.Right?
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@superpowersupply
Ithinkmaybe0.98ispossibleefficiencyforDCtoDCconverter.ForAC-DCconverter,Ithinkevenweadoptalloftheadvantagetechnologies,suchasSR,resonant,andsoon,themostefficiency0.93isthehighestvalue.0.98efficiencyisimpossible,becauseevenweomitotherpowerdissipation,onlyconsidertheACrectifierdissipation,underAC=90V,thelinevoltagedropis2Vatleast,sowecancalculatetheefficiencyis(90-2)/90=88/90=0.9778.SowecanjudgeitisimpossiblethatAC-DCpowersupplycangetmorethan0.98efficiency!!!!Inmyopinion0.9ispossible.Butitissodifficulttoincreasetheefficiency.AndIthinkwetalkabouttheseargumentation,conditionisveryimportant,withoutcondition,nothingisimpossible.Right?
你是国人还是外老,我不会英文
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@czy991221
你是国人还是外老,我不会英文
我给你翻译一下:
我认为对DC-DC电源来说,98%的效率是可能的. 对于AC-DC电源,我认为即使采用所有的先进技术,例如同步整流,谐振等,最高效率能达到93%.
98%的效率是不可能的,因为即使我们省略其他的功率损失,只考虑AC整流的损耗,90V输入的时候,压降至少是2V,因此我们可以计算效率(90-2)/90=88/90=0.9778.
因此我们可以判断AC-DC电源大于0.98的效率是不可能的.
我的观点是0.9是可能的,再增加效率就非常困难了.
我认为我们讨论这些争论时,条件非常重要,没有条件,没有什么东西是不可能的,对吗?
我认为对DC-DC电源来说,98%的效率是可能的. 对于AC-DC电源,我认为即使采用所有的先进技术,例如同步整流,谐振等,最高效率能达到93%.
98%的效率是不可能的,因为即使我们省略其他的功率损失,只考虑AC整流的损耗,90V输入的时候,压降至少是2V,因此我们可以计算效率(90-2)/90=88/90=0.9778.
因此我们可以判断AC-DC电源大于0.98的效率是不可能的.
我的观点是0.9是可能的,再增加效率就非常困难了.
我认为我们讨论这些争论时,条件非常重要,没有条件,没有什么东西是不可能的,对吗?
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