Chapter 1009: True Sea and Air Linkage

Chapter 1009: True sea and air linkage

Faced with Chang Haonan's shock, Chang Shan's reaction was...

Even more shocked——

The former was shocked that someone was preparing to launch an all-electric verification ship so early.

The latter was shocked at how Chang Haonan seemed to know this stuff very well...

After the two stared at each other for a few seconds, Chang Shan said while thinking:

"Integrated power system... is a good name, very general."

Only then did Chang Haonan realize that at this moment, domestic research on integrated power systems should still be in a relatively early stage.

So much so that there is a high probability that there is no definite noun to define it.

His unintentional remark may have brought about the birth of this concept in advance.

Of course, in the end, it's just a name, so it's not that important.

What Chang Haonan is really concerned about is what he or his research team can do——

It has only been three years since the establishment of Torch Laboratory, and the first batch of students have not graduated yet. Therefore, there is only revenue but no revenue, and the overall scale is also growing year by year.

The LNG ship at the Hudong plant has now passed the initial problem-prone period and entered a relatively stable stage. In most cases, it is enough for several graduate students to take turns keeping an eye on the situation and reporting it in time.

It is equivalent to liberating Liu Fangping and Lei Zhixing.

Originally, Chang Haonan's next arrangement was for the two of them to gradually transition to non-contact magnetic bearings and research on permanent magnet fault-tolerant power generation systems——

Both of these people are from the mechanical industry, so it is fitting that they are responsible for sending traditional rotor bearings (and their fellow students in the same major) to their graves.

The only problem is that Torch Laboratory's technical accumulation in this area is... relatively limited.

Chang Haonan has indeed tried to apply a permanent magnet fault-tolerant power generation system on the SeA650 engine, but on the one hand he only verified its feasibility, and actually retained a complete set of mechanical rotor bearings. On the other hand, in addition to the design itself, he and Except for the 606 Institute, most of the core components have been selected from foreign suppliers.

Even so, as its core power generation equipment, the relatively simple, mature and reliable switched reluctance motor was still chosen.

The realization of high power density performance in a wide speed range of this kind of motor requires the establishment of a large gap to adapt to material thermal expansion and mechanical spacing specification requirements. Therefore, the output performance is poor and the volume is difficult to further compress.

A more ideal choice is a permanent magnet motor.

However, let alone Torch Laboratory, even if you look around the world, there are no particularly mature technologies and products.

Germany, the United States, Britain, Russia and Sweden each have related models, but they are all experimental equipment, and their reliability and volumetric power density are generally not ideal.

In addition, as SeA650 is a civil aviation engine developed for international cooperation, the scope of supplier selection can naturally be broadened.

However, most of the projects of the Aerospace Power Group still involve, even specifically for military use. The large amount of bearing support parts requires a stable supply, and it is impossible to rely on imports for everything.

Therefore, no matter from which perspective, you have to find a way to get the permanent magnet motor yourself.

And this opportunity to participate in the research and development of integrated power systems is just like giving away a pillow when you are drowsy——

Although there are still hundreds of millions of differences between warship power and aircraft power, when it comes to integrated power systems, one of the key technologies is the permanent magnet propulsion motor.

Of course, it is impossible to move products directly to Hangfa, but the technologies are always the same.

Therefore, Chang Haonan simply asked directly:

“I don’t know if it’s convenient for General Changshan to reveal, but what specific step have you taken so far?”

"If you are in a hurry...our laboratory can first send a technician with relevant engineering experience to assist..."

Chang Shan looked at Chang Haonan, who was suddenly more proactive than himself, and felt a little uneasy:

"It's not enough to keep up with the progress..."

He waved his hand:

"Currently, this project is mainly led by Academician Ma. It is the first project he led after being elected as an academician, so it is very stable."

Hearing this name, Chang Haonan secretly thought to himself.

Academician Ma Weiming's name is definitely well-known even though he had little interaction with the Navy in his previous life.

At the beginning of this century, Academician Ma's name had not yet become a household name, but he was actually a leading figure in the field of ship power supply systems.

He was elected as an academician of the Academy of Engineering in 2001, largely because the ship power supply system he presided over and developed won the first prize of the National Science and Technology Progress Award the previous year.

Of course, in the current timeline, Chang Haonan and Ma Weiming have not had direct interactions, and they must not show too much understanding of each other.

Therefore, Chang Shan on the opposite side did not notice any clues and just continued calmly:

"We just completed the feasibility study at the beginning of this year and are still discussing whether to choose a medium-voltage AC solution or a medium-voltage DC solution, so the next step is to conduct a round of ground experiments in Jiangcheng."

"After the technical route is determined, you can just send people over... Anyway, these early work has little to do with the specific technology research and development, or... Instead, we need to eliminate external influences and see which solution has more advantages. big……"

Regarding the choice between DC and AC, Chang Haonan knew from the perspective of hindsight that the correct answer should be the former.

Moreover, even based on his own needs, he would definitely choose the former——

AC technology can continue to use land-based power system equipment. Engineering development only needs to solve problems such as improving equipment shipping adaptability and full system integration. The engineering implementation is easy, but it requires high speed regulation performance of the prime mover and an increase in system power density and power supply frequency. Limitations make it difficult to compress the volume and weight, and the parallel connection conditions of alternating current generator sets are harsh. It is only suitable for objects that do not have high power density requirements and are powered by the same type of power supply.

If the shipbuilding industry says your thing is too big, it must be really big.

Americans chose communication technology that seemed to be a shortcut out of their confidence in their own technological research and development capabilities.

Then a bunch of problems arise.

Of course, DC systems also have technical difficulties such as high system integration, strong nonlinearity, and tightly coupled electromagnetic characteristics.

But these parts are concentrated at the power control system level, which happens to be the part that China is good at. The solution is at least not as difficult as the AC system.

For a moment, Chang Haonan had the urge to tell this set of analysis conclusions directly.

Fortunately, I finally got it under control.

No need.

On the one hand, even if Chang Haonan is now well-known, it is impossible for other naval engineering systems to directly change the project plan just because of his words as an outsider.

On the other hand, China's technology research and development in the field of integrated power systems has basically never encountered particularly catastrophic setbacks, and there is a giant like Ma Weiming at the helm.

In this case, allowing them to go through the entire R&D process normally is a necessary condition for accumulation.

So when the words came to his lips, he changed it to a question:

"So what Changshan means is that we need our Torch Group to complete the fault fusion diagnosis system and install it on the verification ship?"

"That's right."

Chang Shan nodded:

"Although integrated power systems are good, all technologies have two sides."

"Centralized management and distribution of energy across the entire ship means that system risks affect the entire ship. Once the power system fails, it is not just the ship's electrical system that is affected. In the most serious cases, it may even cause the entire ship to be damaged. The ship is paralyzed!"

“So, in addition to reducing the failure rate as much as possible on the hardware and setting up enough system redundancy to ensure that there is still a backup after a failure, we also hope to estimate the risk of failure of the entire ship before a failure occurs. , solve the problem in the bud.”

It can be seen from this incident that projects led by big bosses are indeed different.

The problems are clearly sorted out, the solutions are clear, and there are multiple backups.

Project risks are minimized.

It's no wonder that China in the previous life was able to catch up from behind in the field of ship electrical systems.

"Fault fusion diagnosis first requires a sufficient understanding of the electrical design of the entire ship, so I can't guarantee anything until I see the specific plan."

Chang Haonan did not take care of everything, but answered very cautiously:

"So... after you select a specific plan, I hope to send a technical team, or at least a technical representative, to join your project and follow the development of this technology verification ship throughout the entire process, instead of just being a Party B providing the subsystem.”

This is equivalent to the exchange conditions proposed by Chang Haonan.

Chang Shan understood instantly and pointed at himself:

"Like me in the QC300 project team?"

"Almost."

Chang Haonan replied:

"I don't insist on occupying the position of deputy chief engineer...but the people I send there must join your project decision-making level."

After Chang Shan heard this, he hesitated for a moment:

"Your request is indeed reasonable, but I am not the project leader, so I cannot agree on behalf of the entire team."

"But I will report the situation to Academician Ma. He personally asked me to talk to you about this matter, so I shouldn't refuse..."

To this extent, it is basically equivalent to agreement.

It’s just that there are some administrative procedures to go through later.

"Now, we can be regarded as having you in my arms and you in my arms in a literal sense."

Chang Haonan joked half-jokingly.

Chang Shan was stunned when he heard this statement, and then he laughed too——

Institute 703 has now participated in the QC300 project led by the Aerospace Power Group.

Torch Group will also send people to join the comprehensive power system research and development work hosted by Shipbuilding Industry Corporation.

The linkage between sea and air belongs to yes.

After some joking, Chang Haonan then stood up and stretched out his hand towards the other party:

"Then...wish us happy cooperation in advance?"

“A pleasure to work with.”