C153 Improve the Stability of the Transformer

Su Jianguo and Jianjun Cheng came to Zhao Cheng and Zhang Hong's room, Su Jianguo looked at Jianjun Cheng and gestured him to open the door. Jianjun Cheng waved his hand and made a gesture of invitation.

Su Jianguo made a pleading gesture and pulled Jianjun Cheng a few steps forward, hinting him to knock on the door.

Cheng Jianjun pointed at Su Jianguo and weighed his hand for a while. He knocked on the door and said, "Teacher, I am Jianjun. "

Zhao Cheng and Zhang Hong look at each other. Zhao Cheng smiles as he stands up, "Wait a moment. "

When Zhao Cheng came to the door of the room, the door opened, "Jianjun, Jianguo, come in. "

"Teacher, this place is very lively. " Su Jianguo smiled as he looked at Zhao Cheng. "So many fruits?"

"There will be a lot of things to discuss tonight, so I prepared some fruits. " Zhao Cheng looked at Su Jianguo and smiled. "Eat some fruits first?"

"Thank you, teacher. " Su Jianguo took the fruits and walked toward Cheng Jianjun. "Here, I'll give you an orange. "

"Thank you. " Cheng Jianjun smiled and narrowed his eyes. The two of them looked at each other and smiled. Then, they picked two seats and sat down.

"You came just in time. Regarding today's meeting, how do you think we should improve the technology for this transformer?" As Zhao Cheng peeled the orange, he asked Cheng Jianjun and Su Jianguo.

"This transformer. . . Teacher, what do you think?" Su Jianguo did not want to say anything. Instead, he wanted Zhao Cheng to give him a shadow. After all, his performance in front of his teacher was too outstanding and not too good.

"Teacher Zhao. Do you have any other good ideas?" Cheng Jianjun was also curious. He actually had his own plans. After all, when he was in Beijing, he had seen his teacher do research in this area.

"Chief Zhang, can you tell me?" Zhao Cheng smiled.

"Okay. " Zhang Hong nodded his head, opened his notebook and said, "Combined with the specific reason why the CRHLA Motor Team's current flow is unstable during the actual operation of Hangzhou, I believe that the main reason why the current segment exceeds voltage and defies voltage is because there is a measurement value for voltage in the middle of the current segment. Zhao Cheng and I have adjusted all the data under Shanghai's railway bureau. "

Zhang Hong pointed at the data on the computer and said," These questions, we explain and analyze them one by one. First, check if the connection between the sensors and the DCU is loose. "

[Part of the data is based on the CRH1A Type Motor Team Transformer's voltage instability in the middle segment analysis and processing measures. ]

"Personally, I think there is a problem with this wiring. Is there a problem with a lot of wires and a lack of recognition? Then can I choose a better wiring method? " Zhang Hong looks at Su Jianguo, "Jianguo, what do you think?"

After all, this is not a problem of designers, it is a problem of engineers operating it.

"I think it is doable, but how to make the wiring box inside the power box more effective, Su Jianguo says. It also needs a special design, which I need to test with my colleagues to find out. However, according to the current wiring method, We might be able to take a seat according to the logo on the wire box. But if there are too many wiring heads, it is true that this mark needs to be prepared in another way. After all, there is still the problem of positive and negative. " Su Jianguo said.

"Then, what if we choose positive and negative electrodes in different lines? I saw that the box of the shield builder chose this mode. There are enough wires for the shield construct, but it is done in an orderly and precise manner. Maybe we can use it as a reference. " Zhao Cheng thought of one thing, and that was when he went to his old classmate to look at the shield builder from Xing Zi. . . The shield configuration machine gave him inspiration.

"This is a good method. I need to go to the shield construct factory and learn from it" Su Jianguo pointed it out. "As long as we grasp the essence, we can open the model and make new boxes. The problem will be solved. " Su Jianguo gave an even better plan.

"Very good. I agree with this method of improvement. Next, activate the train and check whether the voltage measurement in the middle of all the transformer modules is correct. This. . . Jianjun, what do you think our improvement method is? " Zhang Hong feels that this is something that the designer needs to consider.

"The precision of voltage measurement needs to be done by improving the performance of the computer. Perhaps we will choose to use microcomputer control to increase the accuracy. However. . . This better method, perhaps in terms of the method of calculation, I need to return to Beijing and check the method of the data measurement with my mentor. " Cheng Jianjun said.

"Huang is indeed an expert in this area. I will give you three years. Is there any way to break through?" Zhang Hong asked.

"Zhang Ke, do you want to catch up with the 2014 IGBT technology?" Cheng Jianjun asked. Su Jianguo's words started to resurface in his mind.

"Yes, do you think it's possible?" Zhang Hong smiles.

"It is possible, it is possible. . . . This. . . " Cheng Jianjun said with some difficulty, "Yuan Yuan is breastfeeding. . . This. . . "

"Don't worry, I'll talk to Yuan Yuan. " Zhang Hong smiled, "You just need to make a breakthrough in technology. "

"Okay, Zhang Ke. " When Cheng Jianjun hears that there are no worries, he nods his head in agreement.

Zhao Cheng and Su Jianguo looked at each other. This son-in-law was still using official titles to address each other at this time. . .

"If the train is unable to be activated, then check the output voltage of the sensors under the discharge state. The voltage should be 15-20V. " Zhang Hong frowned and looked at Zhao Cheng, "Elder Zhao, is this because the voltage of the sensors is not high enough?"

"This problem is indeed. . . " Zhao Cheng thought for a while and said, "The discharge failure in the middle of the current segment is also one of the reasons why the voltage overpasses in the middle segment. The charging failure in the middle section is also one of the reasons for the voltage deficiency in the middle section. It's hard to say which one it is, so we still need to improve the discharge and charging ability of the overvoltage and the charging ability. "

" Teacher, I am currently researching this, and I have reached the breakthrough stage " Cheng Jianjun said.

"You should tell Huang about this trip to Beijing and see if there are any solutions. " Zhang Hong nodded his head in satisfaction.

"Okay, Zhang Ke. " Cheng Jianjun smiled and nodded.

"Then the next problem, if there are no faults but repeated failures, the voltage sensor will be replaced. Jianguo, is the failure rate of the voltage sensor very high? " Zhang Hong looked at Su Jianguo.

"Yes, this failure rate is not small in recent years. " Cheng Jianjun nodded.

"Is it a matter of quality?" Zhang Hong becomes curious, after all this involves the problem of repetitive usage and waste of resources.

"Strictly speaking, the current quality is still acceptable. But. . . If the voltage is too high, it will always cause the voltage sensor to malfunction. It's a problem of too high voltage, but it can also be said that part of the sensor material is not ideal " Su Jianguo also understood that it was not the best method to change the voltage sensors frequently.

However, there was no other way. The existing materials had yet to be replaced by better materials. Who could withstand the high voltage?

"Too high voltage. . . Jianjun, you still need to make precise voltage control. " Zhang Hong also understands the problem.

"I understand. " Cheng Jianjun understood the seriousness of this matter. After all, changing the voltage sensors frequently was not the most reasonable method.

"Then, for the next problem, if the faults continue to repeat, the DCU control panel will be replaced" Zhang Hong sees this and looks at Cheng Jianjun once more, "Jianjun, looks like you must make a trip to your alma mater"

"Yes, Zhang Ke, these matters need to be discussed with the teachers from Beijing Traffic University and Xian Traffic University" Cheng Jianjun also sensed the seriousness of the technological improvement.

Many problems were related to the design of the DCU control panel and the IGBT, as well as some of the sensors' materials.

"Our research on new materials must also be accelerated, increasing the performance of high-pressure resistant materials. " Zhao Cheng said.

"Teacher, we are trying to find a way to increase some technical measures to reduce the frequency of replacement" It was true that there were frequent replacements. Their team was also distressed by the cost of these replacements. As such, they tried to reduce the consumption and replacement of materials as much as possible.

"Mhm, but curing the symptoms does not solve the root of the problem. I still hope that the team from the Jianjun Corps will be able to find a way to solve the problem once and for all. " Zhao Cheng looked at Cheng Jianjun and had high hopes for him.

"Okay, after I go to my alma mater, I will try to solve these problems as the core technology. " Cheng Jianjun nodded.

"Wait a minute. I will call Huang and ask him if he is free recently. No, ask Jianguo to listen too. " Zhang Hong said.

Cheng Jianjun and Su Jianguo looked at each other. Su Jianguo was very puzzled as to why he wanted to go.

Could it be that I have to train him now?

"Hey. . . Old Huang, I am Zhang Hong. " Zhang Hong smiles, "It is like this, we are having a meeting in Beijing. Yes, we are preparing to let Jianjun go to your place. En, let's talk about the problem of the DCU control panel and the discharge failure during the current segment. Ah, you know?"

Professor Huang laughed over the phone, "Old Zhang, ah. I know about this. Last week, Cheng Jianjun sent me an email asking about it. Last month, our colleagues in Beijing also held a small meeting with us. They said that when IGBT is going to be nationalized, we should also improve our hardware. We are researching all of this. What, you intend to return my disciple to me for three years?"

" Huang, if the Jianjun Corps can help you solve the technical problem of the stability of the transformer in 2014, not to mention three years, it will take ten years. I can bear to do that too. But. . . When do you think we should let the Jianjun Corps apply to your side? " Zhang Hong said happily.

Cheng Jianjun's eyes lit up and Su Jianguo gave him a thumbs up.

Zhao Cheng looked at Zhang Hong with a smile. He also looked forward to the stable performance of the transformer to get a higher increase. This way, the HS2 project would have a chance to compete.

"If it is possible, let's do it as soon as possible. " Professor Huang said.

"By the way, can I send our engineer Xiao Su to your place to study? He is an engineer. I want him to study at your place for a month and return to our engineer team. It is also good to give the engineers training in advance. After all, some of the research and development technologies needed time to be converted into production, and this time was just the right time to train the engineers to adapt to the latest research and development technologies. Isn't that so?" Zhang Hong asked.

"It should be that engineer, Su Jianguo, who was researching brake with Jianjun Corps, right?" Professor Huang asked.