More than half a month later, Feng Yunshan received the news that the generator had been successfully developed by the Royal Academy of Sciences. He immediately led Xu Shou to the Royal Academy of Sciences to check.

The generator was developed by an electrical team led by Belgian Zenab Gramm. Zinab Gramm, originally a Belgian, went to Paris, France a few years ago, and made a living in a company specializing in the manufacture of electrical equipment, and was inadvertently discovered by Guo Songtao's commercial subordinates that he was more knowledgeable in electrical engineering, so he came into contact with him many times, brought him from Paris to Shengjing, joined the nationality of the Chinese Empire, and entered the Academy of Sciences as an academician after the establishment of the Royal Academy of Sciences.

"Your Majesty the Emperor, what you said is so right, I simply admire you so much!" As soon as Gram saw Feng Yunshan, he lay down in front of him and kissed the tips of his shoes frantically, trembling and excited.

Knowing that this person had no malicious intent, Feng Yunshan stopped the guard next to him from stepping forward to subdue Gramm, and after letting the other party lick his cloth shoes, he asked, "Academician Gramm, I heard that you have already built the generator I said, have you tested it?" Can it continue to generate electricity, how much voltage and how much power? ”

Graham finally stopped his excitement and replied in somewhat broken Chinese: "Your Majesty, we have not only developed the kind of DC generator we designed, but also the alternator you mentioned. After comparison, we found that you are still right, alternators are much more widely used than DC generators.

In terms of voltage, it is 115 volts, and as for power, it is around 3 horsepower. I'll show you around first. ”

Feng Yunshan nodded, and followed Graham to the Electrical Institute of the Royal Academy of Sciences, in a large workshop, there were four or five machines, next to many cables connected, several craftsmen and technicians gathered around, seeing Feng Yunshan and others coming in, they hurriedly saluted.

Feng Yunshan directly looked at the successfully developed generator.

According to the introduction of Gramm and Xu Shou on the side, the first one is a DC generator that has been developed for a long time, and the last three are all alternators that have been tested recently.

For generators, although Feng Yunshan does not know the detailed structure of the specific interior, he still knows a little about the history of generators. Therefore, Gram's introduction at the moment, he is very familiar.

"Your Majesty, the research on generators has actually been a long time. As early as 1831, the British physicist Faraday discovered the principle of electromagnetic induction and made the first disc unipolar DC generator, but this was actually just an experimental model. And the next year, the French scientist Pixi made a permanent magnet hand-cranked DC generator, it is the world's first manufactured DC generator, his most ingenious place is that the rotating shaft of the magnet is equipped with two pieces of metal separated from each other into a cylindrical shape, and the two wires drawn by the coil are in contact with the two metal sheets respectively through the spring sheet. Two wires are then used to contact the two metal sheets to draw out the current. This device, called the commutator, inspired me.

But Pixie's invention still has many flaws. First, rotating the magnet is not as convenient and flexible as turning the coil; Second, the directional current can be obtained through the commutator, but the current strength is still changing. We can try to increase the number of magnets and coils, and slightly stagger the changing current together, so that the intensity of the output current changes within a certain range, but the effect is not obvious.

In fact, in the 30 years since the invention of this generator by Pixie, although there have been improvements to the generator in various parts of Europe, and some new inventions have appeared, the results have not been large, and the generator that can output as large and stable as a battery has never been developed, and the generator developed is not practical. ”

As soon as Graham said it, he gushed endlessly, and even some broken Chinese became fluent, and seeing that the emperor was fascinated by it, he continued to explain.

"Thanks to His Majesty's guidance some time ago, we have a feeling of seeing the sun through the clouds! His Majesty said that instead of a permanent magnet, an electromagnet is used in the generator, which can enhance the magnetic force and produce a strong current. We developed it according to this idea, and after continuous experiments, this electromagnet power generation finally succeeded! It produces a powerful current that the Pixie generator is far more powerful than the Picxi generator. At the same time, we have also improved the motor with a drum-shaped electric drive, which is much more convenient than connecting a large number of batteries to power up, and can also deliver current stably.

We were so excited. We're not satisfied, though! Remembering the concept of alternating current, which His Majesty had said, it made us let go of the DC generator that had been developed more or less and try it day and night.

In fact, I also have a certain understanding of alternators, but after His Majesty's reminder, we found that direct current has few methods, great difficulties, and is too power-consuming when changing the voltage. Moreover, when the power is high and the current is high, the commutator of the DC generator is very easy to lose and damage, and the daily maintenance is very troublesome and the cost is relatively high.

Using the alternating current transmission mentioned by His Majesty, the above problems will be better solved. To this end, we organized our forces, and this half month focused on overcoming the alternator. After three consecutive unqualified test products, finally in this fourth unit, we successfully developed it! Your Majesty, I'm so excited! This is not only the credit of our electrical team, but also the initiative of Your Majesty, without your guidance, without your genius of direction, we could not find the right direction so quickly.

Speaking of which, alternating current is actually simpler and more straightforward than a direct current generator. It's just that if it weren't for His Majesty's suggestion, we wouldn't have thought about it at all, and it would be difficult to find out for a while. It may take ten, twenty, or even decades to find this direction, and therefore, Your Majesty, I am so excited, and it is all thanks to you! ”

Feng Yunshan understood the truth of what Gram said. Historically, after Siemens invented the DC generator, it took more than 20 years for the alternator to be truly functional. In fact, it is not because of how complex the alternator is, the alternating current has always existed, but everyone has not noticed it. In fact, alternators are simpler, more reliable, smaller, less expensive, and less electromagnetic interference than DC generators. Especially in terms of changing voltage and transmitting power, it is the safest and most reliable with a simple transformer match. Not only can the voltage be changed at will, but also does not affect the transmission of power, the efficiency of power transmission is very high, far better than the DC generator, and because of this, the promotion and application in the history of later generations, has always been the advantage of AC.

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