China's high-voltage frequency converter market maintained explosive growth during the “11th Five-Year Plan†period. The industry has gradually matured through its initial stage.
In the past 20 years, manufacturers of low-voltage frequency inverters have been playing a role together. Not only Japanese companies such as Sanken, Fujitsu, Siemens, and ABB have entered the Chinese market and built factories in China, but also Chengdu. More than 70 domestic inverter manufacturers such as Senlan, Shenzhen Yingwei Teng and Taizhou Fuling entered the market. At present, China's low-voltage inverter market annual sales of more than 1 billion yuan. Since 2005, China's average annual sales of low-voltage inverters have increased by more than 20%.
Improve technical level
The data shows that in 2006 China's high-voltage frequency inverters increased the number of new orders to 1,200 units, amounting to 1.02 billion yuan; in 2007, the number of new orders was 2,000 units, amounting to 1.65 billion yuan; in 2008 and 2009, sales were 2.72 billion yuan and 4.61 billion respectively. yuan.
According to a survey conducted by relevant authorities on 19 enterprises above designated size in the industry, the total industrial output value (the current year price) and the industrial sales output value were increased by 32.11% and 33.94% year-on-year in 2007; they were respectively increased by 26.04% year-on-year in 2008 and 19.74%. The quality of economic operations has improved and the economic benefits have increased significantly.
In recent years, domestic inverter manufacturers with a certain scale and strength have begun to increase investment in key product technology research, carry out independent research and development and innovation, and carry out production in accordance with international standards, so that the overall technical level of domestic inverters has been greatly improved. For example, Senlan Company took the lead in developing high-performance vector control inverters, adopting a number of patents and proprietary technologies such as “quasi-superconducting vector control and frequency conversion technology,†and many of its products have reached the international advanced level and gained favorable comments from the market. At the same time, the domestic inverter manufacturers have subdivided the market, and in response to the actual demand in the Chinese market, they have realized differentiated production with foreign products, achieved certain results in the development and application promotion of special-purpose inverters, and were used by the market. accept.
Break the monopoly pattern
With the high-speed development of low-voltage frequency converter industry in China for more than 20 years, the industry has gradually broken the pattern of foreign monopoly.
From the perspective of market share, the market share of domestic brands has rapidly expanded from 8% in 2002 to 40% in 2009, but there are still 60% of foreign brands. Looking at the number of brands in the market, the number of domestic-funded brands is the largest, accounting for about 70%. Domestic inverter manufacturers, such as Shenzhen Inventronics and Chengdu Senlan, are gradually forming brand names. However, the overall strength is still not enough to compete with top international brands. The gap is obvious, but it is gradually shrinking.
With the rise of domestic high-voltage inverter manufacturers, such as Leader Huafu and Dongfang Hitachi, the industry structure that had previously been monopolized by foreign manufacturers has been broken down, and the market share has also been concentrated in a few leading manufacturers such as Leadwell and Siemens. Hands.
Due to the existence of localized production, the existence of economies of scale, and the increasing maturity of technologies, the manufacturing costs of the entire industry have fallen sharply from before. The reduction in product prices has led to a significant rise in the price/performance ratio of high-voltage frequency converters, and “price†is no longer daunting for users. After the end-user purchases the high-voltage frequency changer, the energy-saving effect is very remarkable, and the market demand increases continuously.
Great potential for the future
According to China's current total installed capacity of electric motors, the proportion of electric motors equipped with frequency converters, the country’s planning goals for “energy saving and consumption reduction†and the factors such as the economic development speed of China, the potential of the inverter market in China is still very large.
Experts believe that the future inverter market will develop toward high power and high-end. The frequency changer technology itself has a technological development process that changes from low pressure to high pressure, from low power to high power. It is reflected in the development trend of the product that the power of the inverter products is getting larger and larger, and it is suitable for energy-saving speed regulation of larger-scale motors. demand.
The market share of high-power inverters has been basically controlled by foreign manufacturers. With the improvement of domestic companies' technological level, the power of domestic inverter products has gradually increased. Therefore, the process of replacing domestic brands with foreign brands is a substitute for low power. Inverter products, after replacing high-power inverter products. The evolution of this alternative process has led to an increase in the number of high-power products in the frequency converter market, and the trend of the market towards high-power products has become clear.
The maturity of high-end high-voltage frequency conversion technology will greatly expand the demand for process control for variable frequency speed control. With the development and mature use of advanced functions such as vector control and energy feedback in high-voltage frequency conversion technology, high-voltage frequency converters are being rapidly applied to rolling mills, mine hoists, electric locomotive traction systems, etc., and further expand the technology of high-voltage variable frequency speed control technology. Applicable directions and market areas.
R&D focus areas
This year is the opening year of the “Twelfth Five-Year Planâ€. There are five aspects of the industry’s key research and development products in the future.
High performance variable frequency speed control equipment. With the development of power electronics and AC motor control technology, in the occasions of large-scale industrial systems such as rolling mills, hoists, and paper machines that are traditionally speed-regulated by DC motors, frequency conversion speed control has been used in place of DC speed control in recent years, which not only improves performance, but also reduces Maintenance, and can save 20% to 30%.
Traction frequency control equipment. Traction frequency control equipment for electric locomotives, light rails and other electric drive transport machinery. In the past, these types of drives also used DC speed control, and now they are gradually being changed to frequency conversion speed control. Due to the harsh working environment, there are special requirements for the product's resistance to voltage fluctuations, structure, and cooling, etc. Most of the traction speed regulators are dedicated frequency conversion speed control devices.
Special speed control frequency control equipment. For some applications of the VVVF equipment that require high speed, extremely wide speed range, etc., the motor and frequency conversion speed control equipment need to be tailor-made.
Green power generation with frequency control equipment. Green power generation uses wind power, water power, and solar power to generate electricity. Today, environmental issues are increasingly prominent. This kind of power generation is receiving more and more attention and its development is very rapid.
Clean power converters. Clean power converter means that the power factor of the converter is 1, and the grid side and the load side have as low harmonic components as possible to reduce the pollution to the power grid and the torque ripple of the motor. For small and medium-capacity converters, PWM control with increased switching frequency is effective. For large-capacity converters, at the conventional switching frequency, the circuit structure and control method can be changed to achieve the conversion of clean electrical energy.
In the past 20 years, manufacturers of low-voltage frequency inverters have been playing a role together. Not only Japanese companies such as Sanken, Fujitsu, Siemens, and ABB have entered the Chinese market and built factories in China, but also Chengdu. More than 70 domestic inverter manufacturers such as Senlan, Shenzhen Yingwei Teng and Taizhou Fuling entered the market. At present, China's low-voltage inverter market annual sales of more than 1 billion yuan. Since 2005, China's average annual sales of low-voltage inverters have increased by more than 20%.
Improve technical level
The data shows that in 2006 China's high-voltage frequency inverters increased the number of new orders to 1,200 units, amounting to 1.02 billion yuan; in 2007, the number of new orders was 2,000 units, amounting to 1.65 billion yuan; in 2008 and 2009, sales were 2.72 billion yuan and 4.61 billion respectively. yuan.
According to a survey conducted by relevant authorities on 19 enterprises above designated size in the industry, the total industrial output value (the current year price) and the industrial sales output value were increased by 32.11% and 33.94% year-on-year in 2007; they were respectively increased by 26.04% year-on-year in 2008 and 19.74%. The quality of economic operations has improved and the economic benefits have increased significantly.
In recent years, domestic inverter manufacturers with a certain scale and strength have begun to increase investment in key product technology research, carry out independent research and development and innovation, and carry out production in accordance with international standards, so that the overall technical level of domestic inverters has been greatly improved. For example, Senlan Company took the lead in developing high-performance vector control inverters, adopting a number of patents and proprietary technologies such as “quasi-superconducting vector control and frequency conversion technology,†and many of its products have reached the international advanced level and gained favorable comments from the market. At the same time, the domestic inverter manufacturers have subdivided the market, and in response to the actual demand in the Chinese market, they have realized differentiated production with foreign products, achieved certain results in the development and application promotion of special-purpose inverters, and were used by the market. accept.
Break the monopoly pattern
With the high-speed development of low-voltage frequency converter industry in China for more than 20 years, the industry has gradually broken the pattern of foreign monopoly.
From the perspective of market share, the market share of domestic brands has rapidly expanded from 8% in 2002 to 40% in 2009, but there are still 60% of foreign brands. Looking at the number of brands in the market, the number of domestic-funded brands is the largest, accounting for about 70%. Domestic inverter manufacturers, such as Shenzhen Inventronics and Chengdu Senlan, are gradually forming brand names. However, the overall strength is still not enough to compete with top international brands. The gap is obvious, but it is gradually shrinking.
With the rise of domestic high-voltage inverter manufacturers, such as Leader Huafu and Dongfang Hitachi, the industry structure that had previously been monopolized by foreign manufacturers has been broken down, and the market share has also been concentrated in a few leading manufacturers such as Leadwell and Siemens. Hands.
Due to the existence of localized production, the existence of economies of scale, and the increasing maturity of technologies, the manufacturing costs of the entire industry have fallen sharply from before. The reduction in product prices has led to a significant rise in the price/performance ratio of high-voltage frequency converters, and “price†is no longer daunting for users. After the end-user purchases the high-voltage frequency changer, the energy-saving effect is very remarkable, and the market demand increases continuously.
Great potential for the future
According to China's current total installed capacity of electric motors, the proportion of electric motors equipped with frequency converters, the country’s planning goals for “energy saving and consumption reduction†and the factors such as the economic development speed of China, the potential of the inverter market in China is still very large.
Experts believe that the future inverter market will develop toward high power and high-end. The frequency changer technology itself has a technological development process that changes from low pressure to high pressure, from low power to high power. It is reflected in the development trend of the product that the power of the inverter products is getting larger and larger, and it is suitable for energy-saving speed regulation of larger-scale motors. demand.
The market share of high-power inverters has been basically controlled by foreign manufacturers. With the improvement of domestic companies' technological level, the power of domestic inverter products has gradually increased. Therefore, the process of replacing domestic brands with foreign brands is a substitute for low power. Inverter products, after replacing high-power inverter products. The evolution of this alternative process has led to an increase in the number of high-power products in the frequency converter market, and the trend of the market towards high-power products has become clear.
The maturity of high-end high-voltage frequency conversion technology will greatly expand the demand for process control for variable frequency speed control. With the development and mature use of advanced functions such as vector control and energy feedback in high-voltage frequency conversion technology, high-voltage frequency converters are being rapidly applied to rolling mills, mine hoists, electric locomotive traction systems, etc., and further expand the technology of high-voltage variable frequency speed control technology. Applicable directions and market areas.
R&D focus areas
This year is the opening year of the “Twelfth Five-Year Planâ€. There are five aspects of the industry’s key research and development products in the future.
High performance variable frequency speed control equipment. With the development of power electronics and AC motor control technology, in the occasions of large-scale industrial systems such as rolling mills, hoists, and paper machines that are traditionally speed-regulated by DC motors, frequency conversion speed control has been used in place of DC speed control in recent years, which not only improves performance, but also reduces Maintenance, and can save 20% to 30%.
Traction frequency control equipment. Traction frequency control equipment for electric locomotives, light rails and other electric drive transport machinery. In the past, these types of drives also used DC speed control, and now they are gradually being changed to frequency conversion speed control. Due to the harsh working environment, there are special requirements for the product's resistance to voltage fluctuations, structure, and cooling, etc. Most of the traction speed regulators are dedicated frequency conversion speed control devices.
Special speed control frequency control equipment. For some applications of the VVVF equipment that require high speed, extremely wide speed range, etc., the motor and frequency conversion speed control equipment need to be tailor-made.
Green power generation with frequency control equipment. Green power generation uses wind power, water power, and solar power to generate electricity. Today, environmental issues are increasingly prominent. This kind of power generation is receiving more and more attention and its development is very rapid.
Clean power converters. Clean power converter means that the power factor of the converter is 1, and the grid side and the load side have as low harmonic components as possible to reduce the pollution to the power grid and the torque ripple of the motor. For small and medium-capacity converters, PWM control with increased switching frequency is effective. For large-capacity converters, at the conventional switching frequency, the circuit structure and control method can be changed to achieve the conversion of clean electrical energy.