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A review on the development of energy-saving technology for electric motors and their systems.

The application of motor is more common in modern society. However, in the process of the use of the motor and its system, the power dissipation occurs due to the lack of the energy saving system. The waste of electric energy not only reduces the efficiency of power utilization, but also greatly reduces the overall economic benefit of China's industry. Therefore, in view of this phenomenon, this paper will analyze and explore the development of the energy-saving technology of the motor and its system.

1. A brief analysis of the energy-saving technology of the motor and its system.

(1) analysis of the motor. Motor is an indispensable equipment in the industry of our country, and its working principle is: according to the laws of electromagnetic induction in physics to realize the power conversion. It USES electricity to generate torque and then provides power sources for various mechanical devices.

Electric motors are used in various industries of our country, such as :(1) processing all kinds of materials. (2) fast transmission of logistics. (3) realize the running process of moving objects.

(2) brief analysis of the current situation of energy saving in the motor and its system. As far as the current situation is concerned, the situation of industrial power consumption in China is very serious. For example, in 2013, the total electricity consumption of China's industry reached three-fifths of the total electricity output. In such a large amount of electricity consumption, much of it is wasted due to the electric power loss of the motor itself. The waste of these electric energy not only caused our country to fall into a difficult situation, but also caused great economic loss to our country. So, in order to effectively avoid the occurrence of these phenomena, it is necessary to improve the energy saving technology of motor and its existing system, to make the motor in the process of operation, to minimize power consumption.

(3) to analyze the current energy-saving technology of the motor and its system in China. There are five main aspects of the energy conservation project of the motor and its system :(1) with the emergence of high-tech technology, some more energy-saving mechanical devices are also derived. So, at this point, the enterprise should remove the mechanical equipment that had low efficiency, and then replace it with some new and highly efficient mechanical equipment. (2) improve the operation efficiency of the entire motor and its system. (3) change the operation mode of the mechanical equipment itself. (4) improve the overall operation mode of the motor and its system, and monitor them in real time. (5) in the process of reforming the motor and its system, it is necessary to strengthen the transformation of petroleum industry, electromechanical industry, electric power industry and coal industry.

Generally speaking, it is of great benefit for the whole industry to establish a complete energy conservation project for the electromechanical system and its system. Because it can not only effectively improve the current situation of China's industrial power waste, but also can further improve the overall development level of China's industry.

2. Explore the development of the energy-saving technology of the motor and its system.

(1) the development of energy-saving technology of variable frequency speed regulation. The motor drive device can be divided into two kinds: dc and ac. At present, the most widely used energy-saving technology in the ac speed regulation of motor is the technology of variable frequency speed regulation. There are four advantages of this energy-saving technology. They are :(1), so that the motor drive device can remain in a relatively stable operation state all the time; (2) the motor speed regulating drive device can carry out the operation process of infinite speed regulation; (3) effectively improve the starting ability of the motor and its system; (4) it greatly reduces the current needed for the motor and its system to start. It is precisely because the frequency conversion speed regulation energy saving technology has these advantages, so it has a remarkable effect on the energy saving of the motor and its system. And the ordinary frequency conversion speed regulation technology is only a single want to control the speed regulation, it does not have any energy saving effect to the motor and its system. Therefore, it is an effective way to improve the power consumption of the motor and its system.

(2) "no-load reduction" energy-saving technology. During the entire operation of the motor, the motor is not fully loaded for most of the time, but the voltage is always in a very high state. Not only will it overload the system, but it will also waste more power. Therefore, in order to effectively improve this phenomenon, we need to apply the "no-load reduction" energy-saving technology into the motor and its system.

The principle of "no-load reducing voltage" energy saving technology is that when the motor appears light load or no-load, the voltage is adjusted appropriately according to the actual operation condition of the motor. At the same time, the amount of power consumed by the stator will change with the change in voltage. In this way, the power loss of stator iron can be greatly reduced.

(3) how to make the motor and its system energy-saving technology realize further development. Now on the development of the motor and its system energy saving analysis, can get further development will lead to the method of simple point out: (1) all of the motor and its system equipment to conduct a comprehensive energy saving analysis, and then in view of the energy saving effect is poorer equipment to improve its corresponding energy saving technology. And (2) analysis of the existing motor system energy saving technology, all the factors affecting the energy saving effect, and then these factors are reasonable analysis and processing, in order to improve the effectiveness of energy saving technology. (3) it will apply new technology with more high-tech effect to the electric motor and its system energy saving technology to achieve the purpose of improving the efficiency of energy-saving technology of the motor and its system.

To sum up, the energy saving of the motor and its system is the precondition for our industry to realize high efficiency operation. But at present, the energy saving effect of our electric motor and its system is far from the requirement of the country, which makes the motor waste a lot of power in the process of actual operation. So, in order to effectively reduce the amount of waste of electricity, motor and its system in order to improve the overall development of China's industrial level, also must be strictly in accordance with the requirements of the country, set up a perfect motor and system energy conservation projects, and then will be more mechanical equipment is applied to the motor with high effectiveness and its system, in order to promote the development of motor and system energy saving technology.