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6ES7153-2BA81-0XB0 优势渠道
6ES7153-2BA81-0XB0 优势渠道
In April 15, 2008, hiconics high-power synchronous motor vector control of high voltage inverter in Shanxi cement plant in Linfen by a load test, effectively solves the problem of large power synchronous motor starting current impact and operation step, speed range difference, at the same time to fill the gaps in the field. The product can also be applied to the mine hoist, ball mill, steel rolling mill, main drive, traction trolley large ships and other fields; at the beginning of November 2008, Li Fu Edward produced 10000 kVA/10 kV converter, and after a number of rigorous tests, large fan preparation applied to a steel plant in Shandong; December 23, 2008 Zhiguang electric [28.93 10.00%] also officially launched has been approved by the national authority to strict inspection of 10000 kVA ultra large capacity high voltage inverter. Domestic enterprises continue to break the monopoly of the market structure by a small number of foreign companies, once again sounded the number of technological innovation.
The expert opinion, the development of China still has a high-end high frequency technology, on the one hand, a small part of the actual demand of 10000 kVA products only accounted for the entire high-voltage inverter market, at present the main focus on the needs of 1 000~2 000 kVA level, therefore, technical significance for enterprises of high power development other than economic benefits; due to the high frequency converter, China is still in development, so the rolling machine, hoisting machine, wind generator, electric locomotive traction system and other high-end applications and emerging markets in the short term is difficult to become a major profit point."
It is understood that the domestic high voltage inverter manufacturers use power unit series multi-level technology, by SIEMENS Luo Binkang invented and patented, due to its application for a patent in the United States alone, in our country belongs to the known technology.
"This technology is especially suitable for the start and speed control of the ordinary fan and water pump, but there are still a lot of work to do in the field of precise control and high performance. Other forms of high voltage inverter are also under development, such as medium voltage three level technology, hybrid structure technology, etc.. They have the advantages of compact structure, high density, four quadrant operation, flexible control, etc., will be the future direction of the development of high voltage frequency conversion technology, but also the potential market demand. But the current high voltage inverter power devices used in still rely on imports, it is of high voltage inverter in the development of a "bottleneck problem of the expert explained," in fact, lack of high voltage power device technology has become the core problem of restricting our country and even the world of high voltage frequency conversion technology development. To this end, in 2007 a group of professors, academicians of the State Council, proposed the development of independent intellectual property rights of domestic power devices. At present, the Ministry of science and technology, the national development and Reform Commission, the Ministry of information industry has vigorously opened a lot of related topics, and a small number of domestic 1 200~1 V 700 IGBT to the market."
In addition to the development of high-voltage inverter technology itself, the industry also proposed the concept of "adaptability", which is to ensure the inverter system not affected by the working environment, such as input power, system operation, to achieve stable and continuous operation. The fault voltage field for the industry, realize the automatic voltage drop after recovery and fault switching function requirements of inverter, realize non-stop operation, though not very mature, but there have been some success stories." The experts said. It is understood that some domestic products already have the function.
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