年终盘点

       2006年又快要结束了，06年在中国的传统里，是一个难得的好年份：不仅有两个立春，而且是六十一甲子的第一年。今年最忙的就是婚姻登记所和婚宴公司了。见面时从“你吃了吗？”上升到“你领了吗？”，身边的不少同学、朋友也牵手婚姻，走进围城。总之，社会一片祥和与幸福！

       今年的股市也让那些“炒股炒成股东”的老股民们有了解套并翻盘的机会，上证指数从年初期望“冲千三”的心理预期到了年末已经直抵2500点，达到了历史最高水平，就算你年初清仓随便持有一只ST，放到年终，都可以有40％以上的收益率――股市的收益率已经超过房地产的收益率。福乎，祸乎？至少今年的中央经济工作充满喜庆的气氛。

       股市的火爆恰恰印证了房地产的波澜不惊。国家不断的在发号施令，严控房价，但每一招都是砍在房奴的头上，让我们好心痛！地方政府却置中央政策于不顾，极力托市和救市。但是老百姓也不是傻瓜，决不会拿了口袋里的钱往奸商嘴里送。于是乎，房价继续上涨，多数人选择继续观望，一场不对等的博弈在年初展开。“人为刀俎，我为鱼肉”，不愿为鱼肉，那就选择漠视吧。

       小时候，妈妈跟我说，要好好读书，争取以后不再做农民。现在我终于熬到博士阶段，表面虽风光，内心却彷徨；容颜虽未老，心理早沧桑。中央每年的一号文件都是针对农民，政府也在为农民减负做切实的工作－－至少他们已经免交皇粮，享受耕地补偿了。而我们，虽站在中国科技最前线，却沦为高校最为弱势的群体，享受着内心孤独的快感和精神压抑的自由，生活远没有农民的惬意和幸福。

       而于我，2006年一如既往的平淡，虽偶有波澜，但卷不起几个涟漪。。。

       参加了很多的婚礼，但没有把握自己的幸福！感情于我，它来过，象阵风，拂面时怡情，吹过后寒冷！我残忍的关上感情的大门,拒绝爱情的敲门，背负情感的枷锁，继续享受孤独，四处漂泊。。。

       预测了股市的火爆，却没有猜到自己的结果。几个朋友年初凑钱，欲入股市牛刀小试，却铩羽而归。。。颖彦后来总结说，我们不应炒股，而应该投资股市。炒股如选妻，一旦拥有，勿有他求；不求最好，但求长久！频繁买卖股票者往往都是在给别人送钱。楼市似乎于我太遥远，只是我下铺的兄弟花了近200w大洋砸出了一套130平米的房子，让我盘算着这意味着在我们县城拥有20套150平米房子，那是何等的壮观。。。人生而不平等，房子也是。。。

       年初时，毕业的压力，前途的渺茫和内心的焦躁让我把2006年定为我的学术年。我希望自己能够在这一年里，潜心研究PE，开拓技术视野，培养学术素养和满足毕业论文要求。年终的学术盘点，依然有很多困惑，至少让我欣慰。

       至于今年的阅读，很遗憾，除了技术层面的paper，人文、史哲类的书阅读无几，而且很多看过就忘，阅过无痕。

       明年，应该是我的毕业就业年吧。明年于我会如何？我期待、我努力、我争取、我也梦想着。。。

 

 

 

 

 

 

The following is the email from the editor-in-chief of IEEE Transaction on Power Electronics

*******************************************************

17-Dec-2006

Dear Mr. Li:

Manuscript ID TPEL-2006-10-0532 entitled "Design and Analysis of
Isolated ZVT Boost Converters for High-Efficiency and High-Step-Up
Applications" which you submitted to the IEEE Transactions on Power Electronics,
has been reviewed.  The comments of the reviewer(s) are included at the
bottom of this letter.

The reviewer(s) have recommended publication, but also suggest some
revisions to your manuscript.  Therefore, I invite you to respond to the
reviewer(s)' comments and revise your manuscript.

To revise your manuscript, log into
http://mc.manuscriptcentral.com/tpel-ieee  and enter your Author
Center, where you will find your manuscript title listed under "Manuscripts
with Decisions."  Under "Actions," click on "Create a Revision."  Your
manuscript number has been appended to denote a revision.

You will be unable to make your revisions on the originally submitted
version of the manuscript.  Instead, revise your manuscript using a word
processing program and save it on your computer.  Please also highlight
the changes to your manuscript within the document by using the track
changes mode in MS Word or by using bold or colored text.

Once the revised manuscript is prepared, you can upload it and submit
it through your Author Center.

When submitting your revised manuscript, you will be able to respond to
the comments made by the reviewer(s) in the space provided.  You can
use this space to document any changes you make to the original
manuscript.  In order to expedite the processing of the revised manuscript,
please be as specific as possible in your response to the reviewer(s).

IMPORTANT:  Your original files are available to you when you upload
your revised manuscript.  Please delete any redundant files before
completing the submission.

Because we are trying to facilitate timely publication of manuscripts
submitted to the IEEE Transactions on Power Electronics, your revised
manuscript should be uploaded as soon as possible.  If it is not possible
for you to submit your revision in a reasonable amount of time, we may
have to consider your paper as a new submission.

Once again, thank you for submitting your manuscript to the IEEE
Transactions on Power Electronics and I look forward to receiving your
revision.

Sincerely,
Prof. Frede Blaabjerg
Editor in Chief, IEEE Transactions on Power Electronics
fbl@iet.aau.dk


Reviewer(s)' Comments to Author:


Reviewer: 1
Comments to Author
The following changes are mandatory:
1. How to derive this topology should be shown and the past work using
coupled inductors for interleaved topologies should be referred. This
will offer readers easy understanding of this topology. One possible way
is starting from one (or two) active-clamp Flyback converter. To change
the converter to a boost type performance, the discharge voltage needs
to be Vo-Vin instead of Vo. That is the reason to add the third coupled
winding from another phase. It is then easy to understand why the
converter must be operated with D>0.5. The readers will appreciate the
thinking process and the presentation.

2. Fig. 3(a) clearly shows hard switching of the main switch for both
turn on and turn off. The claimed ZVT turn off for the Sc is also
questionable in Fig. 3(b). The authors should address this question
seriously.

3. Do1 should be D1 in Fig. 12. The waveform of the output rectifier
should be shown instead of the Vds1 waveform since the reduced voltage
stress of the output rectifier is claimed as one of the major benefits.

4. The equations (8) and (10) can not be intuitively understood by the
readers. The equations should be derived step by step in the paper or
in an appendix. Meanwhile, the equations (1) to (5) are not important.
It might be better by just focusing on the key equations.

5. Fig. (3) should be redrawn. The big connection dots are very
distracting. Some ground symbols are corrupted. The connection point at the
drain of the main switch is far from a professional looking. Fig. (4)
shows the key operation waveforms, so the authors should pay special
attention to every detail. Reducing the weight of the vertical
dashed time lines helps uncover the details. For an example, the slope
of Ilk1 is reduced between [t2, t3] than that between [to, t2]. A
transaction paper should be as rigorous as possible.

6. The quality of experimental waveforms (Fig. 10 to Fig. 12) needs to
be improved.

7. The guideline for the figures for IEEE publications should be
followed. The labels of vertical and horizontal axes should be marked with
proper fonts outside the pictures. The authors' names in the references
should be in a consistent format (initial of the first name. last name). 


The following changes are suggested to the authors.
1. The authors should check the paper carefully to use English
correctly. Some suggested changes are:
The location || The original wording   || Suggested changes
P2 line 20    || energy transmission || energy transfer
P3 line 49    || However, it is          || It is not clear what "it"
refers to.
P7 line 31   ||  The primary side is parallel  || The two primary sides
are parallel
P7 line 33   ||  The secondary side is series || The two secondary
sides are in series
P20 line 44 || So the switching...      || Delete "So"
P20 line 49 || So the low voltage...    || Low voltage, low RDS-on
devices..
P20 line 49 || So the low voltage...    || Delete "So"

2. The presentation and low-quality pictures of this paper dramatically
degrade the value of the work. The authors should pay much more
attentions to improve the quality of writing and figures in the future. The
guideline for the IEEE publications should be followed.


Reviewer: 2
Comments to Author
As I have mentioned in the first section of this Score Sheet, the
authors should clarify whether the converter shown in Fig. 3a is a new
converter. This is an important issue because the converter presented in
this paper is a topological modification of the above mentioned converter
and, therefore, the originality of this paper depends on the
originality of that converter. This clarification is mandatory.

At the beginning of the paper, authors give information about several
converters suitable to obtain high output voltage, some of them derived
from the basic boost converter (with galvanic isolation) and others
derived from resonant converters. However, a voltage conversion from 40V
to 760V (not so high) can be achieved by using other standard
converters, such as phase-shifted full bridge converters. In this case, standard
IC controllers can be used, instead of one specific one as it should be
used in the case of the proposed converter. However, the proposed
converter seems to be interesting and, from my personal point of view, the
paper should be published with some changes:

1- Some details about the generation of the control signal should be
provided.

2- The switching frequency used in the converter (50 kHz) is quite low
for an 1 kW prototype. Some experimental results about the efficiency
at higher frequencies (such as 100 kHz and 200 kHz, which are usual
switching frequencies for other topologies) could give us more information
about the real advantages of the proposed converter.

3- The advantages of the proposed converter should be compared with
other converter different to the one shown in Fig. 3.a, which is very
similar to the proposed one (for example, a phase-shifted full bridge
converter). However, the reviewer understands that to build another 1kW
converter to establish this comparison is very hard task. Therefore, this
comment is not a mandatory one.

4- (See Page 21) The proposed converter has a disadvantage in
comparison with the one shown in Fig. 3a: It has only one main switch with its
source terminal connected to ground and, however, the converter shown in
Fig. 3a has its two main switches with their source terminals connected
to ground, which simplifies the driving system of these switches.
Authors should comment something about this.

5-Some detailed mistakes are listed below:
  5.1 Page 16: ... 揳rt-of-the-state攨 should be 厯state-of-the- art攨
  5.2 Page 18: ... 搃nductors Pindct, The conduction losses??should
be ?搃nductors  Pindct, the conduction losses攨
  5.3 Page 19: you should clarify the meaning of the power losses that
appears in Fig. 9 and have not been mentioned in Page 18.
  5.4 Page 20: ... 揵ellows攨 ?should be ?揵elow?

EIC : More journal paper references should be added

就这么活着

周六毅行，我们实验室的“乌龟慢慢爬队”居然组不成有效队伍：队长姚刚要参加5年一度的本科同学聚会；女队员陈娜身体不适退出毅行；女队员陈燕脚伤不宜活动。按照毅行要求，必须有女队员参加才能算有效队伍，我们的两个女生都退出了毅行，剩下邓老师，刘军和我三个当游击队。我对毅行有着莫名的好感，把她当作难得的亲近自然和体能测试的机会。经过邓老师拍板，我们打算组成游击队，不注册、不检录、不算成绩。为了避开5000多人在山上摆蛇形的壮观场面，我们决定从植物园上山，走在大多数队伍的前面。

       由于长期的缺乏锻炼，况且听说这次毅行的的水平距离是25km，是历次难度之最，加上这段时间没有训练拷机，我对自己能否走完全程没有信心。于是我们打算按照我们的体能，能走到哪就走到哪，不强求结果，只在乎参与。

       没想到，我们一路上很顺利，2：30就到了终点站――之江校区，在我们之前只有十几支有效队伍到达，这让邓老师狠狠的得意了一把，到处发短消息炫耀自己的体能。。。而最让我们兴奋的是，毅行的宣传画上有我们一张3.30毅行的集体照，当时我们实验室的邓老师、现在韩国三星总部上班的胡磊师兄、马上要毕业去GE上班的姚刚师兄、目前在英国读博的柳莺师姐、跟我一届，现在上海上班的陈立锋和我组队参加毅行，当时我们在终点站拍了一张合影，没有想到成为了毅行活动的宣传画，想着自己在浙大毅行史上能够留下一张照片，兴奋的很。。。

       这个周末的另外一个任务就是安排与我是高中校友的大二小学妹的自习房间。小学妹不仅长的漂亮，而且还很有思想，因为要参加新东方的英语朗诵比赛，需要找一个既不会影响别人，也不会影响到她的房间来放声的读英语。这可给我出了一个难题，而且是她爸爸亲自打电话让我协助解决这个问题。想着我这次回郴州参加同学婚礼，她爸爸给了我很多的便利和帮助，难以辞却。在经过一系列电话求助后，总算得到了重点实验室阮老师的首肯，允许她周末在408学习。

       小学妹对读书充满着乐趣，总就得时间不够用，而且能够从广泛得阅读中获得幸福的感觉，这种感觉我在本科的时候也曾经有过，可惜现在堕落到只关心能够让我毕业、便于我找工作的东西了。

       跟小学妹的交流，发现自己真的老了，青春不再，冲劲难现；岁月磨平了我的性格，也磨去了我的锐气；慢慢的堕落在世俗的社会中。。。

       就这么活着。。。