In the "Twelfth Five-Year Plan" response to climate change and energy conservation and emission reduction work, China pointed out that energy conservation, emission reduction, and environmental protection have become important issues that humans must face together. Frequency inverters bear the brunt of energy saving and emission reduction.
Inverter, as the name suggests, is a kind of integrated application of frequency conversion technology and microelectronics technology to change the frequency and amplitude of the motor power supply to control the components of AC motor power transmission.
In order to achieve effective control of the power transmission device, scientists have made bold innovations. In 1967, the world's first inverter was successfully developed and put into commercial operation. After more than forty years of development, the frequency conversion of AC motors has become a major means of saving energy, improving production processes, improving product quality, and improving the operating environment. Correspondingly, our frequency converters are favored by users for their high efficiency, high power factor, and excellent speed control and braking performance, and they play an important role in many fields.
The first is the soft start function. The hard start of the motor, the direct start current is often 3-5 times of its rated current, and the sudden increase of the current not only increases the difficulty of motor design and production, but also causes serious impact on the power grid system capacity, transmission and distribution facilities, and the baffle and valve. The damage to other equipment is also great. The role of the inverter is to change the frequency and amplitude of the AC motor power supply, thereby changing the cycle of its moving magnetic field, to achieve the purpose of smooth control of motor speed. This causes the starting current of the motor to start from zero and gradually increase. The maximum value does not exceed the rated current, which reduces the impact on the power grid and the requirements for the power supply capacity, extending the service life of the equipment.
The second is to optimize motor operation. In systems such as wind turbines and central air-conditioning systems, traditional water supply methods are implemented using water towers, high water tanks, and pressure tanks. The water pressure at the outlet is often affected by the height of the water tank, the amount of water stored, and other factors, and changes often occur. It is not easy to truly achieve constant pressure. In addition, the conventional speed control method for fans, pumps and other equipment is to regulate the amount of air supply and water supply by adjusting the baffle and valve opening of the entrance and exit. When the input power is too large, a large amount of energy is consumed in the closure process of the baffle and the valve, resulting in waste. It is as if people did not accurately calculate the amount of work under the premise of the bricks greatly exceeded the demand shipped to a tall building, resulting in waste of manpower and man-hours. Today, engineers combine inverters, PID regulators, SCMs, PLCs, etc. to form a control system that can regulate the output flow of pumps and reduce ineffective labor. As long as people set the water pressure of the pumping station mains, the set value is compared with the actual value of the feedback. After the difference is calculated and processed, the system will issue a control command to control the number of pumps and the number of operation of the pump motor to achieve the water supply manifold. Constant pressure target. Compared with regulating the water pressure of the valve, the system reduces the pipe resistance, greatly reduces the effectiveness of the cut-off loss, and does not require frequent manual operation, reducing the labor intensity.
In systems such as central air conditioners and fans, inverters also perform well. Central air-conditioning is designed according to the maximum need for cold (heat) plus 10 to 20%. It consumes large amounts of electricity and has great energy-saving potential. Using frequency converters to control the speed and energy of central air conditioning refrigerating compressors, refrigerating pumps, cooling pumps, cooling tower fans, air return devices, etc., it is possible to avoid excessive flow and excessive pressure and ensure the normal and effective operation of the system. Electricity 20% to 50%. Another example is that during the construction of the “Shanghai Yangtze River First Tunnel,†the Yangtze River Tunnel, the builders need to ensure that the tunnel is about 8.9 kilometers long and has a 13.7 meter inside diameter. To this end, this project uses a Delixi converter, which directly sets the motor speed according to the amount of air used, precisely adjusts the air volume, optimizes the use of electrical facilities, and saves energy by 20%-45%.
The third is the protection of the system. After detecting the abnormal state in the system, the inverter can automatically correct the action or block the power semiconductor device PWM control signal to stop the motor automatically, such as overcurrent stall prevention, overcurrent cutoff, semiconductor cooling fan overheating and instantaneous power outage protection.
In many automated energy-saving new products, inverter products produced by companies such as Omron, Hekang, Schneider, and Inventronics, which lead the world in frequency inverter technology, have excellent performance in various fields of application. Energy Saving Pioneer."
3G3MX2 is a new generation of compact open-loop vector frequency converter developed by Omron to meet the needs of China's manufacturing industries such as: textile industry, mechanical processing, building materials industry, food packaging and electronics industry, and other vector inverters below 15KW. Its listing not only provides customers with a more cost-effective product, but also makes up for Omron's open loop vector converters with no 11 KW and 15 KW.
Schneider Electric, a global energy efficiency management specialist, recently introduced the ATV212 inverter tailored for the HVAC industry, adding new members to the “green†automation drive system. ATV212 frequency converter adopts Schneider's unique low harmonic technology. Without built-in reactor and adding any accessories, the current harmonic distortion rate THDI can be suppressed below 35%, and there is no voltage and torque loss at the output of the inverter. Users can save energy and enjoy clean energy without increasing costs, labor and cabinet space, and achieve a multiplier effect.
Schneider Electric senior vice president and head of the industrial division Xiu Dehua said: "With the increasing use of inverter technology in central air-conditioning systems, the associated harmonic pollution problems are also becoming increasingly serious, resulting in increased energy consumption and equipment damage. And other negative issues. ATV212 can greatly reduce the degree of pollution of the power grid, and provide users with more economical installation space and more optimized solutions."
Based on the high performance and high reliability of the original inverter products, after many years of promotion and expansion of the low-voltage inverter market, and summarizing the experience and recommendations of customer applications, Inovance technology introduced a new high-performance inverter in 2011. Device: MD380 series.
MD380 series inverter has excellent performance, supports synchronous motor and asynchronous motor vector control, supports a variety of encoders, improved high starting torque characteristics and superior dynamic performance, all represent the highest level of domestic technology.
In terms of functions, MD380 series inverters have virtual IO functions, increase motor overheat protection, and also have the function of fast current limiting, and can also realize switching control among multiple motors. The most distinctive feature is that it is equipped with a programmable control card. Users can use the software to operate the internal variables of the inverter, and can also operate all port resources of the inverter. More methods and more flexible applications can be performed according to the process requirements. Powerful background software can realize the uploading and downloading of the inverter parameters, as well as the real-time oscilloscope function. Power range from single-phase 0.4kW to three-phase 450kW.
Inverter, as the name suggests, is a kind of integrated application of frequency conversion technology and microelectronics technology to change the frequency and amplitude of the motor power supply to control the components of AC motor power transmission.
In order to achieve effective control of the power transmission device, scientists have made bold innovations. In 1967, the world's first inverter was successfully developed and put into commercial operation. After more than forty years of development, the frequency conversion of AC motors has become a major means of saving energy, improving production processes, improving product quality, and improving the operating environment. Correspondingly, our frequency converters are favored by users for their high efficiency, high power factor, and excellent speed control and braking performance, and they play an important role in many fields.
The first is the soft start function. The hard start of the motor, the direct start current is often 3-5 times of its rated current, and the sudden increase of the current not only increases the difficulty of motor design and production, but also causes serious impact on the power grid system capacity, transmission and distribution facilities, and the baffle and valve. The damage to other equipment is also great. The role of the inverter is to change the frequency and amplitude of the AC motor power supply, thereby changing the cycle of its moving magnetic field, to achieve the purpose of smooth control of motor speed. This causes the starting current of the motor to start from zero and gradually increase. The maximum value does not exceed the rated current, which reduces the impact on the power grid and the requirements for the power supply capacity, extending the service life of the equipment.
The second is to optimize motor operation. In systems such as wind turbines and central air-conditioning systems, traditional water supply methods are implemented using water towers, high water tanks, and pressure tanks. The water pressure at the outlet is often affected by the height of the water tank, the amount of water stored, and other factors, and changes often occur. It is not easy to truly achieve constant pressure. In addition, the conventional speed control method for fans, pumps and other equipment is to regulate the amount of air supply and water supply by adjusting the baffle and valve opening of the entrance and exit. When the input power is too large, a large amount of energy is consumed in the closure process of the baffle and the valve, resulting in waste. It is as if people did not accurately calculate the amount of work under the premise of the bricks greatly exceeded the demand shipped to a tall building, resulting in waste of manpower and man-hours. Today, engineers combine inverters, PID regulators, SCMs, PLCs, etc. to form a control system that can regulate the output flow of pumps and reduce ineffective labor. As long as people set the water pressure of the pumping station mains, the set value is compared with the actual value of the feedback. After the difference is calculated and processed, the system will issue a control command to control the number of pumps and the number of operation of the pump motor to achieve the water supply manifold. Constant pressure target. Compared with regulating the water pressure of the valve, the system reduces the pipe resistance, greatly reduces the effectiveness of the cut-off loss, and does not require frequent manual operation, reducing the labor intensity.
In systems such as central air conditioners and fans, inverters also perform well. Central air-conditioning is designed according to the maximum need for cold (heat) plus 10 to 20%. It consumes large amounts of electricity and has great energy-saving potential. Using frequency converters to control the speed and energy of central air conditioning refrigerating compressors, refrigerating pumps, cooling pumps, cooling tower fans, air return devices, etc., it is possible to avoid excessive flow and excessive pressure and ensure the normal and effective operation of the system. Electricity 20% to 50%. Another example is that during the construction of the “Shanghai Yangtze River First Tunnel,†the Yangtze River Tunnel, the builders need to ensure that the tunnel is about 8.9 kilometers long and has a 13.7 meter inside diameter. To this end, this project uses a Delixi converter, which directly sets the motor speed according to the amount of air used, precisely adjusts the air volume, optimizes the use of electrical facilities, and saves energy by 20%-45%.
The third is the protection of the system. After detecting the abnormal state in the system, the inverter can automatically correct the action or block the power semiconductor device PWM control signal to stop the motor automatically, such as overcurrent stall prevention, overcurrent cutoff, semiconductor cooling fan overheating and instantaneous power outage protection.
In many automated energy-saving new products, inverter products produced by companies such as Omron, Hekang, Schneider, and Inventronics, which lead the world in frequency inverter technology, have excellent performance in various fields of application. Energy Saving Pioneer."
3G3MX2 is a new generation of compact open-loop vector frequency converter developed by Omron to meet the needs of China's manufacturing industries such as: textile industry, mechanical processing, building materials industry, food packaging and electronics industry, and other vector inverters below 15KW. Its listing not only provides customers with a more cost-effective product, but also makes up for Omron's open loop vector converters with no 11 KW and 15 KW.
Schneider Electric, a global energy efficiency management specialist, recently introduced the ATV212 inverter tailored for the HVAC industry, adding new members to the “green†automation drive system. ATV212 frequency converter adopts Schneider's unique low harmonic technology. Without built-in reactor and adding any accessories, the current harmonic distortion rate THDI can be suppressed below 35%, and there is no voltage and torque loss at the output of the inverter. Users can save energy and enjoy clean energy without increasing costs, labor and cabinet space, and achieve a multiplier effect.
Schneider Electric senior vice president and head of the industrial division Xiu Dehua said: "With the increasing use of inverter technology in central air-conditioning systems, the associated harmonic pollution problems are also becoming increasingly serious, resulting in increased energy consumption and equipment damage. And other negative issues. ATV212 can greatly reduce the degree of pollution of the power grid, and provide users with more economical installation space and more optimized solutions."
Based on the high performance and high reliability of the original inverter products, after many years of promotion and expansion of the low-voltage inverter market, and summarizing the experience and recommendations of customer applications, Inovance technology introduced a new high-performance inverter in 2011. Device: MD380 series.
MD380 series inverter has excellent performance, supports synchronous motor and asynchronous motor vector control, supports a variety of encoders, improved high starting torque characteristics and superior dynamic performance, all represent the highest level of domestic technology.
In terms of functions, MD380 series inverters have virtual IO functions, increase motor overheat protection, and also have the function of fast current limiting, and can also realize switching control among multiple motors. The most distinctive feature is that it is equipped with a programmable control card. Users can use the software to operate the internal variables of the inverter, and can also operate all port resources of the inverter. More methods and more flexible applications can be performed according to the process requirements. Powerful background software can realize the uploading and downloading of the inverter parameters, as well as the real-time oscilloscope function. Power range from single-phase 0.4kW to three-phase 450kW.
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