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Nuo Min clapped his hands and shouted: "It's very good, it's great, it's definitely okay according to Liu Chen's method." ”

The two technicians were discussing, and they all looked at her when she interrupted her, Zhang Zheng was nervous, and looked the little girl up and down, "You...... You can understand what we're saying, too?"

The young man in front of him was so unexpected, he was so wicked that he didn't look like a human, could it be that this little girl was not ordinary?

Nuo Min's face turned red, his little arm waved, and said, "What's so difficult about this, isn't that what it's like, follow what Liu Chen said, and it will be fine." ”

Liu Chen was also amused by her innocent appearance, "Haha, in fact, Nuo Min is right, sometimes it is complicated to think about simple problems." ”

Zhang Zheng sighed faintly, "Yes, listening to your words, I was stunned, why did you kid apply for Jianghai University, if you go to Nanchen University, after admission, I will specially recruit you into my laboratory, according to the standard of associate professors, your ability has surpassed many doctoral students, if you can always engage in technical research, then the future is limitless." ”

Nuo Min nodded again and again, she couldn't agree more, and said with a smile: "Mr. Professor has to ask for advice, he is more powerful than a doctoral student." ”

Liu Chen shook his head and said with a smile: "Don't talk nonsense, little girl, knowledge is unbounded, and I specialize in art, I just happen to have research in this direction, Professor Zhang's profound knowledge is not something you can imagine." ”

Zhang Zheng felt comfortable when he heard this, how many days have he heard such the most pleasant words.

This young man is really extraordinary, with a superb level of technology, and it is rare that he is not arrogant or impatient, he has seen too many young geniuses, most of them with an arrogant face, which often restricts further development in the future, and it must be known that after college, it is not IQ and talent, but mentality and patience.

"Liu Chen, I now formally invite you to join our UHVDC generator research group, where the two siblings deliver food every day. ”

"Professor Zhang, as far as I know, your research group is a well-known professor from all over the country, can you call the shots and let me join?" Liu Chen remembered that when Yinba was developed and listed, no one would believe it, Lan Jun broke down and cried, many times even if he had strength, it was not enough, and his equal status and reputation were also very important.

It's not a big deal.

Zhang Zheng's face turned red, his status in the research group was indeed not high, and said, "This ...... This really doesn't work, but I have the right to recommend, heh, now our so-called group of professors and experts are at a loss, if anyone puts forward a new idea, it will immediately become a live target, since you can solve it, naturally you can't ask for it, however, you have to be mentally prepared, people who are engaged in research are not good at stubble, and they will not care about face at all, especially if you are still so young. ”

He was deeply affected by it.

Liu Chen smiled and shook his head slightly, how could he not understand the temper of the researcher, he liked to play some tricks the most, and said: "In this way, you go back and talk to the person who can call the shots, if it works, I will go and see, if it doesn't work, then I won't wade into this troubled water, and I will be happy." ”

Nuo Min didn't seem to understand, "Since Liu Chen can solve the problem, it would be good if he didn't do what he said, why is it so troublesome." ”

Zhang Zheng and Liu Chen both laughed, how can this girl understand the little abacus in the stomach of a cultural person.

Ulanya came up with a fragrant roast leg of lamb, fresh cold dishes, all home-cooked food on the grassland, and said apologetically: "Teacher Liu Chen, Mr. Professor, it's all home-cooked food, it's not to taste, please bear with me." ”

To put it mildly.

After the meal, Zhang Zheng went back satisfied, and asked Liu Chen to wait for the news with a smile, if it went well, he would give the news when the two brothers and sisters delivered food tonight.

Liu Chen smiled and didn't answer, he always felt that Zhang Zheng was too optimistic.

After Zhang Zheng returned to the research group, before he could talk about Liu Chen, a professor from Bingcheng University of Technology jumped out and said: "Professor Zhang, the plan you proposed is not feasible at all, after my calculations, when the switching frequency is 15K, the voltage fluctuation is still 5." 21%。 ”

A stack of computational model analysis was displayed in his hand, using difficult high-order dynamic equations.

"Professor Hua, the frequency used in my scheme is from 100k, have you measured the voltage fluctuation at that time?"

Now the big guy simply treats him as a Friday, and he comes to have fun when he has time, and he just came back from asking for advice, Zhang Zhengzi is not afraid of these difficulties.

The attention of the crowd immediately turned to him, and they prepared to besiege him.

"Professor Zhang, are you mistaken, 100k?"

"With such a high frequency, IGBT can't reach it. ”

Zhang Zheng smiled: "Then you can use MOSFET tubes." ”

"The channel of the insulated gate FET is so shallow, and the capacity is a little bit. ”

"Heh, this is easy to solve, don't you just have multiple pipes together. "Zhang Zheng is very confident.

Qin Ming frowned and said, "Xiao Zhang, with such a high frequency, you can't achieve this pressure and current equalization at all, and the tube will be burned as soon as the power is on." ”

is still an academician with a vicious eye, and everyone says yes again and again.

Zhang Zheng's face is not red and his heart is not beating, it is completely different from the previous embarrassment, people now have goods in their stomachs, so they are naturally not afraid, "Ha, what Academician Qin said is indeed a problem, but my switch tube can only switch when the current is zero, and the parallel tube, current sharing is not a problem." ”

Ah, I answered again.

The professors looked at each other, Wang Ba was like a mung bean, and they were all surprised in their hearts, how could this Zhang Zheng go out, it was like opening up the second pulse of Ren Du, and he couldn't meet any masters.

Everyone was stunned for a moment, and they couldn't even ask other rebuttal questions.

After pondering, Gong Shu said: "Xiao Zhang, it seems that you have a deeper understanding of the control of this topology, which is very good, we should all have your spirit of not giving up, the current sharing problem of multi-switch parallel connection can be solved, but you have such a high frequency, the rectification of the boost side must also use a fast diode, a single diode withstand voltage is far from meeting the requirements, how should you do this equalization?"

That's right, this is also a big problem, and suddenly the professors were overjoyed, and they were bound to refute Zhang Zheng.

"Academician Gong's question is indeed a key technology. Zhang Zheng pretended to have a bitter face and walked to the whiteboard in front of him.

"Transformer Winding ......"

Before he finished speaking, someone jumped out, "The transformer is absolutely not good for dividing the windings, how many windings are there for this? How to ensure that the magnetic circuit is completely consistent? The process is too complicated." ”

"Professor Deng, don't worry, in fact, what I want to say is that the method of dividing the windings of the transformer is definitely not good, it is best to divide it into two windings, the upper and lower air slits are symmetrical, and it can also cancel electromagnetic interference. ”

"Don't talk about this, this must require multiple diode strings, how to solve the equalization voltage?"

"Professor Gu's temperament is really impatient, listen to me slowly. Zhang Zheng drew a figure on the whiteboard, which was exactly the picture that Liu Chen drew for him. (To be continued.) )