/newmessage.php?tosys=1&title="The Power Empire of Industry."

Chapter Errors/Click here to report

Although Liang Yuan decided to put aside all the things at work a year ago, it was a pity that he was taken to Nanhu Science and Technology Park by Su Liangyu before he was free for a few days.

The bladeless electric fan has been invented for nearly half a year, and Li Yuanling has already solved the technical difficulties in aerodynamics one by one.

After a period of operation, the project team found that the carbon brush of the DC motor will drop a lot of powder-like carbides, which remain in the narrow exhaust gap of the bladeless fan。

In the eighties, the electronic speed regulation and electronic commutator of the motor are also quite cutting-edge disciplines in the world, looking at Su Liangyu's bitter melon face, Liang Yuan waved the big stick of finance, and Su Liangyu promised that these two items will not be considered first, as long as the framework of the system can be set up, the reliability meets the requirements of commercial applications, and the control accuracy of the developed products is about the same thing, as long as Su Liangyu can lead people to put the have, Without this problem, not only will the budget of the microelectronics room be doubled next year, but the backbone personnel will also get a "capitalist-style" housing in Shengjing.

When Su Liangyu chatted with his subordinates, he mentioned urban construction, daily life and so on in the United States. The American in the eighties was a veritable hope for mankind in the eyes of the Chinese, when the United States had not searched our ships, blown up our embassies, and knocked out our planes, but was squatting in a trench with China, jointly vigilant against the polar bear that seemed to be furious at any time.

"Xiaoyuan. The electronic commutator is not a foundation at all, and the real room has chosen to develop a speed regulation system for AC motors, and it has been busy for many months, and now it can finally be taken out for you to see the big boss. Su Liangyu said with a smile.

"Oh. Oh, Lao Su, you have broken through the GTO technology," Liang Yuan looked incredulous.

Since Nikola Tesla (Note 1) invented alternating current, how can alternating current be controlled and intervened as he pleases? It is the long-term pursuit of electrical engineers. Before the advent of the information age, the whole world is recognized as in the electric age, and the two most important technological cornerstones of the electric age are power electronics manufacturing technology and the conversion technology derived from it.

Since 1957, the world's first thyristor was born in the real yàn chamber of General Electric in the United States, the device is widely used in various electronic equipment and electronic products, mostly used for controllable rectification, inverter, frequency conversion, voltage regulation, non-contact switch, etc. By the 80s, it had evolved from the original one-way thyristor (SCR) to the turn-off thyristor (GTO).

For Liang Yuan, the thyristor (GTO) can be turned off, which is a technical barrier that must be overcome in the future for the railway locomotive to adopt advanced AC-DC-AC transmission. Only through the thyristor as the core of the substation rectification equipment, can the high-voltage, high-frequency alternating current from the electrified railway high-voltage line or the generator in the head of the locomotive be turned into an ordinary power frequency current suitable for driving the AC motor.

"How is it possible in such a short period of time," Su Liangyu shook his head and said.

"The thyristors are purchased from Siemens, and the microprocessors and control programs for speed regulation are produced by us. ”

Seeing Liang Yuan's expression change from disbelief to a little disappointed, Su Liangyu smiled and said: "I am very interested in the self-production of GTO components that Xiaoyuan just said, and the production line of that thing is similar to the microprocessor production line. All of them are produced by ion lithography machines used on wafers, high-precision automatic locators and other equipment, and can be used as the focus of work when setting up an independent device room after the New Year. ”

"Lao Su, can you restore the GTO in the real room?" Liang Yuan asked curiously.

"The GTO principle and individual production are not difficult, the most difficult thing is the process and yield rate of mass production, and the small test equipment in the real room can only etch a GTO device on a wafer. Even if the mid-year pilot equipment is installed and commissioned, there will be no mass production capacity. ”

An ordinary four-inch wafer can produce at least 30 chips in normal production, and only one piece of GTO chip can be produced on a wafer in the real room, which is no longer a luxury.

Liang Yuan listened to Su Liangyu talk about the difficulties in the mass production of the GTO, but his heart moved.

China's railway locomotive and China's aviation industry belong to a type of difficult brothers, just like the international mainstream of the aircraft has been on the supersonic speed we are playing with propellers, others are flying three generations of F16, we are modifying the MiG-21, for railway locomotives, the first generation of fly-by-wire locomotive rectifier equipment uses a single anode mercury arc rectifier tube, this thing is commonly known as the ignition tube, not only highly toxic but also unstable reliability, belongs to the international mainstream power head rectifier technology in the fifties, the Republic did not use the pilot tube rectification technology until the late seventiesAt that time, the rectifier and transformation technology of the international telex head had begun to enter the era of GTO.

With the introduction of a series of projects, it was not until the new century that a breakthrough was made in the high-power thyristor, and at that time, the international telex head rectifier and transformation technology had already entered the IGBT era.

Due to the unique system of the Ministry of Railways, the introduction of GTO technology was first spread to more than a dozen scientific research institutes and universities under the Ministry of Railways, with the change of national education policy, the subordinate colleges and universities of the Ministry of Railways were unified into the Ministry of Education in the nineties, and as a result, GTO technology was widely spread in domestic universities.

GTO technology does not require high production equipment. From the mid-nineties to the new century, the precision requirements of the wafer industry have entered the era of a few microns or even nanometers, and GTO only needs a processor production line with a precision of 5 microns to meet the most basic production needs. On the basis of the original technology, countless micro-innovations have been made, and countless scientific researchers have solved the problem of professional titles mixed up with funds through the study of GTO technology.

Around 2007, I was a graduate student in a related major. With the diffusion of GTO technology, the original expensive plasma ion lithography machine on the GTO production line can be made. High-precision automatic locators and other equipment have been replaced by relatively low-cost contact lithography machines and automatic etching tables, and it can be said that since the new century, the academic community of the Republic has been leading the rapid development of the global GTO manufacturing process.

Although the academic community has made a series of breakthroughs in the manufacturing process of the GTO, the high-power GTO rectified telex head in the railway service still purchases GTO maintenance parts abroad at a high price, because no enterprise or department invests in the production of high-power GTO components with independent intellectual property rights and the international advanced level.

Liang Yuan's buddy who worked at CNR said self-deprecatingly: "It's a real TM cup, and it is rare for the academic community to tell a big truth, but it has been ignored by the people of the whole country for many years." But if you invest is a fool. The next generation technology of the GTO, IGBT, is about to be eliminated abroad, and who is really sick if he invests 700 or 800 million yuan to build such a factory for the 1,800 locomotives in service of the Ministry of Railways. ”

"Doesn't it mean that the production lines and production processes of GTO and IGBT are basically the same? You can continue to upgrade in the future, which is better than spending 4 or 5 billion yuan to introduce the IGBT production line," Liang Yuan asked back then.

"Hehe, that is, in the seven-point news, we are really doing sustainable development, unless we are born 20 years early. Now this thing is just a title fund, and everyone knows it. In the future, the IGBT of CSR will come in, and a considerable number of people will be able to continue to mix for 20 years to engage in research and development, not to mention a loss of one billion or eight billion, or a loss of one or two billion. ”

In Liang Yuan's memory, the advanced GTO production process was eventually commercialized. Shrewd businessmen in Jiangsu and Zhejiang have perfectly combined the same cheap 10-micron and five-micron domestic lithography machines, automatic corrosion tables and other equipment with independent intellectual property rights and GTO technology, and produced extremely cheap pure domestic low-power GTO devices with tens of millions of investments, providing electronic components for the lowest-grade weak current distribution cabinets in China, and of course exporting them to third world countries in large quantities.

I heard that after Su Liangyu finished speaking, Liang Yuan's understanding of the GTO industry was deepened, copying the temptation of the road walked by businessmen in Jiangsu and Zhejiang in the previous life, and the naked was placed in front of Liang Yuan, although the production process of high-power GTO has not been verified by mass production, but in the field of substation rectification in a short period of time, catching up with the world-class level is enough to make Liang Yuan tempted, and Japan made it ...... three years ago The high-power GTO has caused a sensation around the world, and the current GTO production technology is truly the international frontier.

High-power GTO can not produce low-power first, starting from the civil weak current distribution system, now the domestic industrial and civil building distribution cabinet is still playing with the knife gate, core transformer, fuse, this market can be said to be endless in the eighties, Liang Yuan recalled his previous life when contracting projects, a series of components in the distribution cabinet, the industrial distribution cabinet is composed of circuit breakers and frequency conversion rectifier equipment, and ordinary civilian ones are only circuit breakers.

Since this month, the monthly income of tens of millions of dollars on the army side has been completely gone, and he is still thinking about where to make money these days, in terms of his own investment scale, it is too dangerous to just count on the cash flow generated by Suifenhe's foreign trade, how can he forget the old business of the previous life, and the darkness under the light is really the easiest place for people to ignore.

Note 1: Let's spend this product by yourself, this guy is a real legend. RS

Genius remembers [Aishang Novel Network] in a second biquge.info provides you with wonderful novels to read.