High precision and wide range make frequency conversion the first choice for industrial speed control
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According to industry insiders, the growth rate of the installed capacity (power) of the upconverter in the Chinese market is actually around 20%. Based on this growth rate, China's inverter market can only mature and gradually become saturated after at least 15 years.
The frequency converter is an important component of the industrial control system and is installed at the front of the motor to achieve speed control and energy saving. The rear of the high voltage frequency converter drives the loads of fans and pumps, and the actual power saving effect reaches 30%~60%. In the future, the market development of this industry will benefit from the transformation of large and medium-sized projects; the low-voltage frequency converters will be composed of the control layer and the execution layer equipment. Automation control system, its future development will benefit from manufacturing equipment upgrades.
High-voltage frequency converters can be subdivided into general-purpose and high-performance. At present, domestic-funded companies occupy more than 80% of the market share in the general-purpose field. The fierce competition has led to a sharp decline in prices in 10 years; the high-performance market is still dominated by foreign capital, and gross profit is higher than that of general products. About 50%, the future will become the main direction of domestic-funded enterprises.
The downstream of the low voltage inverter is dominated by manufacturing industrial control equipment. In 2009, the growth rate was below 5% due to the financial crisis. The growth rate in the first three quarters of 2010 was as high as 30%. It is expected that the steady growth rate of 15% can be maintained in the next five years.
The high-end market of low-voltage inverters accounts for more than 80% of foreign investment, and the leading domestic companies are Inovance Technologies and Inventronics. Compared with foreign-funded enterprises, domestic capital leaders are in the phase of providing a single inverter product to provide comprehensive solutions, and both market share and profitability are expected to increase in the future.
In the past few years, China's inverter market maintained an annual growth rate of 25%-35%, and its growth rate ranks first in the electrical industry. Far more than China's growth in gdp in recent years. It is expected that this growth rate will remain above 25% on average in the next 10 years or so. Currently, the growth rate of the installed capacity (power) of the upconverter in the Chinese market is actually around 20%. Based on this growth rate, China's inverter market will not mature until it takes at least 15 years to become saturated.
In China's low-voltage inverter market, foreign brands still dominate. At the same time, the strength of China's inverter supporting industry is relatively weak. Domestic brands have a certain gap with foreign brands in terms of technology, processing and manufacturing, industrial design, etc., as well as financial strength. China's inverter started late, and the backward technology has caused China's domestic inverters to be at a disadvantage in the inverter market. Not only is the steel industry, rail transit, and other highly demanding domestic inverters rarely enter, even if it is It is also difficult to enter sub-sectors that are not very technically demanded and that are preconceived by certain foreign brands.
High precision and wide range make frequency conversion the first choice for industrial speed control. Vector control methods are used in low voltage frequency conversion and high performance high voltage frequency conversion. Compared to V/f control, vector control significantly improves the speed range and control accuracy.
There is still a certain gap between China's industrial production automation level and the developed countries. The “Twelfth Five-Year Plan†proposes “restructuring and upgrading the manufacturing industryâ€, in which “developing advanced equipment†and “promoting manufacturing from big to strong†become the direction to guide future development. Frequency conversion technology will be further promoted in the field of industrial speed control and precision control because of its excellent performance. In particular, low-voltage inverter technology, which is widely used in manufacturing industries, is closely related to future development and automation and equipment upgrades.
As a whole, the competition in the inverter industry in China will become increasingly fierce. Because the market is highly tempting, the potential capacity is very considerable, and it constantly attracts new players from the industry. However, the existing market has formed a certain scale and the development is maturing. The future plunder of resources and market warfare will be inevitable. With continuous technological advancements, the stability of product quality has gradually increased, coupled with the advantages of services and prices, the competitiveness of domestic manufacturers will become even stronger.
From the perspective of demand, inverters are gradually becoming more diversified, and the emergence of general-purpose and special-purpose products is to meet the diverse needs of users. In addition, inverter manufacturers also pay more attention to product quality and use safety, and actively seek greater breakthroughs, making the inverter can work well in harsh environments, and ensure the use of safety and the user's normal production.