156: wind turbines

Thinking of this, Xu Bai took out an A4-sized white paper, folded it in half, and then wrote down the key components needed for both types of generators and their functions on the left and right sides respectively.

The key components of an AC generator include the stator, rotor, slip rings and brushes, and end covers and bearings.

The 'stator' is composed of a fixed iron core and coils wound around the iron core; these coils are also called stator windings, and they are the core component for generating induced electromotive force.

When the rotor rotates and generates a changing magnetic field, the stator windings cut the magnetic field lines, and then, according to the principle of electromagnetic induction, AC current is generated.

Next is the 'rotor', which is composed of an iron core, coil windings, and a rotating shaft; it generates the rotating magnetic field.

The rotating magnetic field cutting the stator windings is the source of the magnetic field that produces induced current.

After that are the 'slip rings and brushes'; the slip rings are two conductive rings coaxial with the rotor, and it is important that they are insulated from the rotor.

The slip rings are connected to the two ends of the coil windings respectively, and as for the brushes, carbon brushes are usually used, and they only need to be in close contact with the slip rings.

This part is the device that outputs the generated induced current to the outside.

Finally, end covers and bearings are needed; the end covers can fix the stator and bearings, protect the internal components, and also form a sealed structure.

The bearings need to be installed at both ends of the rotating shaft and can effectively reduce friction when the rotor rotates, ensuring smooth rotation.

A DC generator, on the other hand, requires a commutator; this commutator is composed of insulated semi-copper rings, needs to be fixed on the rotor, and then rotates with the rotor.

Its core function is rectification, changing the output direction of the AC current to turn it into DC current.

When Xu Bai wrote these down, making a generator seemed very easy, giving people a feeling of "I can do it too."

However, in reality, there are still many difficulties within.

Xu Bai couldn't solve these difficulties alone, so he needed to call a meeting with the rest of the laboratory staff... Wu Zijin had thought that when he called Xu Bai over, Xu Bai might not be used to it in the morning and would need some time to review previous documents.

Unexpectedly, he directly dropped a bomb among them, not even giving them time to prepare.

"Our next research plan is generators."

This sentence left Wu Zijin a little stunned.

"We're starting to research generators now!" Liu Mengyun exclaimed in great surprise.

Even Liu Mengyan opened her eyes wide in astonishment and looked at Xu Bai.

Xu Bai: "Yes, is there a problem?"

Liu Mengyun: "Um, aren't we still researching materials? Aren't we currently making new Dry Battery Cards?"

"Yes, but you've almost finished researching that; you can take time to research it later, after all, you understand what needs to be understood, and the differences between Dry Battery Cards aren't particularly large, so it's still relatively difficult to make a breakthrough in a short time."

"Is that difficulty more difficult than researching new Generator cardss?"

Wu Zijin asked, a bit confused by Xu Bai; are all geniuses like this, enjoying challenges?

"Are we afraid of difficulties in our research? Do you want to research Generator cardss? Do you want to have a major breakthrough?"

The three soul-searching questions left the three people in front of him speechless.

Finally, the three of them only said one word.

"Yes!"

Xu Bai got the answer he wanted and nodded with satisfaction; everyone still had an enterprising spirit.

"Alright, I'll continue to tell you about the principle of making Generator Cards; I call it the battery induction phenomenon: when a part of a conductor in a closed circuit moves to cut magnetic field lines in a magnetic field, an induced current will be generated in the conductor.

Remember this sentence; you will understand it later based on experiments."

The family did not immediately pick up a pen and write it down in their notebooks.

Xu Bai: "Who among you has studied mechanical structures?"

As soon as he finished speaking, Wu Zijin proudly raised his right hand.

Upon seeing this, Xu Bai handed him the paper in his hand and explained: "I've written down the main materials we need to make the generator, and there are also explanations about the function of the materials.

Based on this information, we can find them from our existing material library; for example, T45, H89, C23, S3, and more than ten other materials are all very suitable; we can test them all later.

Then there's the mechanical structure problem; we need to design the internal structure of the generator, where the gap between the rotor and the stator needs to be strictly controlled, otherwise problems can easily arise.

If the gap is too large, magnetic leakage will increase; if the gap is too small, friction will increase, so Zijin, you look into designing a solution for this aspect..."

Xu Bai finished speaking many key points, and the notebooks in the hands of the three people below him had several pages recorded; in the middle, they ate two loaves of bread for lunch.

It wasn't until two in the afternoon that they finished the meeting and began experiments... "Team Leader Bai, I just designed a lot, but I found that different functions of generators need to have differences.

Which type of generator should we design first for testing?"

"How about we design the Wind Power Generator cards first, and then take the others one by one."

"Okay."

... "Sister, this part here won't work; look, after running for a long time, the temperature rises, and after the temperature rises, the magnetism seems to disappear."

After reviewing it, Liu Mengyan proposed a solution.

"To solve this problem, we can consider two methods: first, we conduct tests to see the most suitable temperature for this material, and then control the temperature within this safe range; second, we need to select other high-temperature resistant materials."

Liu Mengyun: "Mm-hmm, high temperatures will affect magnetism, so we also need to test whether low temperatures will affect magnetism."

Liu Mengyan: "Okay, we can also design some heat dissipation structures, such as heat sinks or fans."

Liu Mengyun nodded... "Let's try the C23 material; B28's effect isn't too good."

"Okay."

"C23's conductivity is indeed better; are there any other materials? Let's test them all."

...Two hours later, the four people gathered around a table; on the table was the 1.0 version of the Wind Power Generator cards they had made.

Although this cards was synthesized from 30 cardss, the four people had made over three hundred cardss, and everyone's mental energy was exhausted except for Xu Bai, so everyone deeply hoped it would succeed.

Wu Zijin: "Shall I start the test?"

Xu Bai and the twin sisters nodded, telling Wu Zijin to read the cards with the cards reader.

Wu Zijin inserted the cards into the cards reader, and a small wind power generator appeared in front of him.

Turning the fan blades, the generator began to generate electricity.

"It's working, it's working, it can generate electricity."

Liu Mengyun happily jumped.