My name is Inverter, and among the many new energy-saving products, I am known as the "energy-saving forward" for my excellent function.
In today's world, extreme disasters are frequent, with melting glaciers, rising sea levels, persistent droughts, and torrential rainfall...... It is a serious threat to human livelihoods. Today, energy conservation, emission reduction and environmental protection have become important issues that mankind must face together. I was born in this climate.
Inverter, Wangwen Shengyi, is a kind of comprehensive use of frequency conversion technology and microelectronic technology to change the frequency and amplitude of the working power supply of the motor to control and communicate the electric transmission of the motor. My birth is the embodiment of human wisdom and sweat.
In order to ensure the safe and reliable operation of fans, pumps and other equipment, engineers have left a certain surplus when planning to use power drives. When the motor is not running at full load, the remaining torque adds to the active power consumption, which constitutes the waste of electrical energy. For example, it takes a half-horse to pull a cart of goods up a high slope, and people usually pick two horses to complete the task. Isn't there still half a horse here that hasn't worked yet? Obviously, if you match the goods according to the carrying capacity of the horse, you can reduce the waste and maximize the benefits. The same principle can be applied to the power drive surplus. If the speed of the motor can reach the requirements of people in real time, then the energy lost in the system will naturally be reduced!
In order to accomplish the useful manipulation of electric drives, scientists have made bold innovations. In 1967, the world's first inverter was successfully developed and put into commercial operation. Through more than 40 years of development, communication motor frequency conversion speed regulation has become a major means to save electric energy, improve production process, improve product quality, and improve the operating environment. Correspondingly, our inverters are widely loved by users for their high efficiency, high power factor, and excellent speed regulation and starting and braking functions, and play an important role in many fields.
The first is the soft-start function. The motor is hard to start, the direct start current is often 3-5 times of its rated current, and the sudden increase in current not only adds to the difficulty of planning and production of the motor, but also poses a serious impact on the capacity of the power grid system, transmission and distribution equipment, and the damage to the baffle, valve and other equipment is also great. My effect is to change the frequency and amplitude of the power supply of the communication motor, so as to change the period of its moving magnetic field, so as to achieve the intention of lubricating the speed of the motor. This makes the motor starting current from zero and gradually added, and the maximum value does not exceed the rated current, which reduces the impact on the power grid and the requirements for power supply capacity, and prolongs the service life of the equipment.
The second is to optimize the operation of the motor. In the fan, central air conditioning and other systems, the traditional water supply method is completed by using water towers, high-level water tanks, air pressure tanks and other equipment. The water pressure at the outlet is often affected by factors such as the height of the water tank and the amount of water storage, and often changes, and it is not simple to truly complete the constant pressure. In addition, the traditional speed regulation method of fans, pumps and other equipment is to adjust the air supply and water supply by adjusting the baffle plate and valve opening of the inlet and exit. When the input power is too large, a large amount of energy is consumed in the process of intercepting the flow of the baffle and valve, which constitutes a waste. It's like people transporting bricks that greatly exceed the required amount of bricks to high-rise buildings without accurately calculating the amount of work, which constitutes a waste of manpower and man-hours. Now, engineers combine inverters, PID conditioners, microcontrollers, PLCs, etc., to form a control system, which can regulate the output flow of the pump and reduce ineffective labor. As long as people set the outlet pressure of the pumping station main, the setting value is compared with the practical value of the feedback, and the difference is processed through calculation, and the system will announce the control instruction to control the number of units and speed of the pump motor, so as to reach the policy of stable pressure of the water supply main. Compared with the conditioning valve to control the water pressure, the system reduces the resistance of the pipeline, greatly reduces the efficiency of interception loss, and does not require manual frequent operation, which reduces the labor intensity. Now, I am busy in places such as water plants, daily communities, fire water supply systems, sewage lifting and treatment systems, agricultural drainage and irrigation, and music fountains.
In the central air conditioning, fan and other systems, we also have a good embodiment. Central air conditioning is planned according to the maximum demand for cold (heat) plus 10-20%, which consumes a lot of electricity and has great potential for energy saving. Use me to regulate the speed and energy-saving control of the central air conditioning refrigeration compressor, refrigeration pump, cooling pump, cooling tower fan, return air device, etc., which can avoid excessive flow and excessive pressure, ensure the normal and useful operation of the system, and save 20%-50% of electricity. For another example, during the construction of the Shanghai Yangtze River Tunnel, the "first tunnel of the Yangtze River", the builders needed to ensure that the tunnel with a length of about 8.9 kilometers and an inner diameter of 13.7 meters was well ventilated. To this end, this project selected Delixi inverter, according to the size of the air volume directly given the motor speed, precise adjustment of the air volume, optimize the use of electrical equipment, energy saving of 20%-45%.
Along with the economic benefits, the social benefits of the inverter are also very obvious. It is estimated that the inverters that ABB Group has produced and installed worldwide alone can save 115 billion kWh of electricity per year, reducing carbon dioxide emissions by 97 million tons, which is more than Finland's annual carbon dioxide emissions.
The third is to have a protective function for the system. After detecting the abnormal state in the system, I can actively correct the action or close the PWM control signal of the power semiconductor equipment, so that the motor can actively park, such as overcurrent loss speed prevention, overcurrent blocking, semiconductor cooling fan overheating and instantaneous power failure protection.
After listening to my confession, you will think that I am a veritable "energy-saving striker", so please give me the opportunity to give full play to the effect on the day of production!
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