In recent years, domestic inverters have gradually emerged, and they have firmly dominated the market of high-voltage inverters. However, in the field of medium- and low-voltage inverters, they are still outnumbered by foreign brands. Recently, some experts pointed out that based on the increasingly pressing demand for energy conservation, especially the pull of industrial energy conservation, competition in the inverter market is also becoming increasingly intense, and the medium and low voltage market will be the main battlefield for the future competition of the inverter.
Frequency converter energy-saving application speed
The frequency converter is a power control device that utilizes the on-off function of the power semiconductor device to convert the power frequency power source to another frequency, and has the functions of performing soft start, variable frequency speed control, improving the operation accuracy, and changing the power factor of the AC asynchronous motor.
Inverter energy saving is mainly reflected in the application of fans and pumps. The starting current of the motor using the inverter starts from zero and gradually increases. The maximum value does not exceed the rated current, which reduces the impact on the power grid and the requirements on the power supply capacity, thereby achieving the effect of energy saving and extending the service life of the equipment. Equipment maintenance costs.
Especially in the field of fine processing, through the high-speed control of the motor speed by the inverter, the manufacturing process level can be greatly improved. It can be said that the inverter is currently the most ideal and most promising motor energy-saving equipment.
Although the frequency converter has many advantages, due to the price issue, its large-scale promotion has been limited. Therefore, in the past, for a long period of time, it was in an awkward situation of “acclaiming or not applaudingâ€. Based on the increasingly pressing demand for energy conservation, especially the pull of industrial energy conservation, China's inverter market has become the focus of many domestic and foreign enterprises.
The frequency converter is initially used for speed control. With the development of technology and society's increasing demand for energy efficiency, it has gradually been used in the field of energy conservation.
The energy saving rate of the motor system using the inverter is generally about 30%, and some high occasions can reach 40% to 60%. The energy saving effect is significant. Today, inverters are the development direction of motor energy saving.
Frequency conversion speed control technology earlier used in the coal industry is the mine hoist, the developed countries have been widely used in frequency converter belt conveyor speed control or belt conveyor start control, fan speed and water pump speed control. The use of frequency converters in the above equipment, in addition to improving the transmission performance, the more important is to save energy.
At present, the power industry's energy saving, emission reduction and consumption reduction are even more severe. Since frequency converters can efficiently save energy and improve the level of technology in many industries, to a certain extent, vigorously promoting the application of frequency converters in various industries can reduce the pressure on power generation indicators in the power industry and save energy while reducing Emissions, reduce energy consumption.
At the same time, the power industry is also one of the important application areas of frequency converter products. From the control process related to inverters in China's thermal power plants, the drive devices for wind, coal, water, slag, and exhaust gas systems are suitable for low- and medium-voltage inverter applications.
Chinese and foreign brands in the low pressure market
With the rapid development of modern power electronic technology and computer control technology, the technological revolution of electrical transmission has been promoted. AC speed control replaces DC speed control, and computer digital control replaces analog control has become a trend. AC motor frequency conversion and speed regulation is a major means to save energy, improve production process, improve product quality, and improve operating environment. Frequency conversion speed regulation is recognized as the most promising speed regulation method both at home and abroad due to its high efficiency, high power factor, and excellent speed and braking performance.
As the domestic inverter market started with the entry of foreign brands, the market share of foreign brands reached more than 70%. European and American brands, Japanese and Taiwanese brands ABB, Siemens, Fuji Electric, Mitsubishi Electric, Yaskawa Electric and other foreign brands accounted for the majority of China's low-voltage inverter market share.
Domestic brands are represented by Shenzhen Infinity, Chengdu Hope Senlan, and Shenzhen Huichuan Technology.
With the development of the frequency converter industry, the core electronic components of the frequency converter from the original SCR (thyristor), GTO (gate turn-off thyristor), through the BJT (bipolar power transistor), SITH (static induction thyristor), MGT ( MOS control transistor), MCT (MOS control thyristor), developed to today's IGBT (insulated gate bipolar transistor), HVIGBT (high-voltage insulated gate bipolar thyristor), the update of the device to promote the wider application of the inverter The market scale quickly expanded.
With the improvement of the status of energy-saving industries, the potential capacity of the inverter market has attracted many industry participants. According to statistics, there are currently more than 100 brands on the domestic inverter market. In addition, there are also thousands of companies engaged in product sales and secondary development. Relevant statistics show that at present, the growth rate of the installed capacity of inverters in the domestic market is about 20%. According to such development speed and market demand, it takes about 10 years for the inverter market to be saturated.
In 2011, the supply of low-voltage inverters in the domestic market was in short supply, and for the first time, there was a faster growth rate than high-voltage inverters, and competition in high-voltage inverters was further exacerbated. "Usually, the market size of low- and medium-voltage inverters has grown at a level of 10% to 15%, but the growth rate in 2011 exceeded that of high-voltage inverters for the first time, achieving an accelerated development of 30%," said an industry source.
On the whole, China's variable frequency speed control technology started late and is 10 to 15 years later than Europe, America, Japan, and other developed countries. However, some experts believe that due to the current market application of high-end inverter is mainly occupied by European and American and Japanese brands, from the long-term development trend, there are nearly 80% of the import substitution space, the low-voltage market will be the main battlefield for the frequency converter competition in the future .
The medium and low voltage frequency converter industry is a strong cyclical industry and is closely related to the national economic cycle. Although the impact of automation and upgrading of high-end equipment remains the same, last year, under strict national tightening policies, some SMEs capitalized on new equipment procurement and technological transformation due to rising raw material prices, increased labor costs, and difficult loans. Faced with financial difficulties, the demand for frequency converters has slowed down, and the use of acceptance bills by small and medium-sized users will also reduce the enthusiasm of channel developers for market development.
Frequency converter energy-saving application speed
The frequency converter is a power control device that utilizes the on-off function of the power semiconductor device to convert the power frequency power source to another frequency, and has the functions of performing soft start, variable frequency speed control, improving the operation accuracy, and changing the power factor of the AC asynchronous motor.
Inverter energy saving is mainly reflected in the application of fans and pumps. The starting current of the motor using the inverter starts from zero and gradually increases. The maximum value does not exceed the rated current, which reduces the impact on the power grid and the requirements on the power supply capacity, thereby achieving the effect of energy saving and extending the service life of the equipment. Equipment maintenance costs.
Especially in the field of fine processing, through the high-speed control of the motor speed by the inverter, the manufacturing process level can be greatly improved. It can be said that the inverter is currently the most ideal and most promising motor energy-saving equipment.
Although the frequency converter has many advantages, due to the price issue, its large-scale promotion has been limited. Therefore, in the past, for a long period of time, it was in an awkward situation of “acclaiming or not applaudingâ€. Based on the increasingly pressing demand for energy conservation, especially the pull of industrial energy conservation, China's inverter market has become the focus of many domestic and foreign enterprises.
The frequency converter is initially used for speed control. With the development of technology and society's increasing demand for energy efficiency, it has gradually been used in the field of energy conservation.
The energy saving rate of the motor system using the inverter is generally about 30%, and some high occasions can reach 40% to 60%. The energy saving effect is significant. Today, inverters are the development direction of motor energy saving.
Frequency conversion speed control technology earlier used in the coal industry is the mine hoist, the developed countries have been widely used in frequency converter belt conveyor speed control or belt conveyor start control, fan speed and water pump speed control. The use of frequency converters in the above equipment, in addition to improving the transmission performance, the more important is to save energy.
At present, the power industry's energy saving, emission reduction and consumption reduction are even more severe. Since frequency converters can efficiently save energy and improve the level of technology in many industries, to a certain extent, vigorously promoting the application of frequency converters in various industries can reduce the pressure on power generation indicators in the power industry and save energy while reducing Emissions, reduce energy consumption.
At the same time, the power industry is also one of the important application areas of frequency converter products. From the control process related to inverters in China's thermal power plants, the drive devices for wind, coal, water, slag, and exhaust gas systems are suitable for low- and medium-voltage inverter applications.
Chinese and foreign brands in the low pressure market
With the rapid development of modern power electronic technology and computer control technology, the technological revolution of electrical transmission has been promoted. AC speed control replaces DC speed control, and computer digital control replaces analog control has become a trend. AC motor frequency conversion and speed regulation is a major means to save energy, improve production process, improve product quality, and improve operating environment. Frequency conversion speed regulation is recognized as the most promising speed regulation method both at home and abroad due to its high efficiency, high power factor, and excellent speed and braking performance.
As the domestic inverter market started with the entry of foreign brands, the market share of foreign brands reached more than 70%. European and American brands, Japanese and Taiwanese brands ABB, Siemens, Fuji Electric, Mitsubishi Electric, Yaskawa Electric and other foreign brands accounted for the majority of China's low-voltage inverter market share.
Domestic brands are represented by Shenzhen Infinity, Chengdu Hope Senlan, and Shenzhen Huichuan Technology.
With the development of the frequency converter industry, the core electronic components of the frequency converter from the original SCR (thyristor), GTO (gate turn-off thyristor), through the BJT (bipolar power transistor), SITH (static induction thyristor), MGT ( MOS control transistor), MCT (MOS control thyristor), developed to today's IGBT (insulated gate bipolar transistor), HVIGBT (high-voltage insulated gate bipolar thyristor), the update of the device to promote the wider application of the inverter The market scale quickly expanded.
With the improvement of the status of energy-saving industries, the potential capacity of the inverter market has attracted many industry participants. According to statistics, there are currently more than 100 brands on the domestic inverter market. In addition, there are also thousands of companies engaged in product sales and secondary development. Relevant statistics show that at present, the growth rate of the installed capacity of inverters in the domestic market is about 20%. According to such development speed and market demand, it takes about 10 years for the inverter market to be saturated.
In 2011, the supply of low-voltage inverters in the domestic market was in short supply, and for the first time, there was a faster growth rate than high-voltage inverters, and competition in high-voltage inverters was further exacerbated. "Usually, the market size of low- and medium-voltage inverters has grown at a level of 10% to 15%, but the growth rate in 2011 exceeded that of high-voltage inverters for the first time, achieving an accelerated development of 30%," said an industry source.
On the whole, China's variable frequency speed control technology started late and is 10 to 15 years later than Europe, America, Japan, and other developed countries. However, some experts believe that due to the current market application of high-end inverter is mainly occupied by European and American and Japanese brands, from the long-term development trend, there are nearly 80% of the import substitution space, the low-voltage market will be the main battlefield for the frequency converter competition in the future .
The medium and low voltage frequency converter industry is a strong cyclical industry and is closely related to the national economic cycle. Although the impact of automation and upgrading of high-end equipment remains the same, last year, under strict national tightening policies, some SMEs capitalized on new equipment procurement and technological transformation due to rising raw material prices, increased labor costs, and difficult loans. Faced with financial difficulties, the demand for frequency converters has slowed down, and the use of acceptance bills by small and medium-sized users will also reduce the enthusiasm of channel developers for market development.
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