At present, many scholars and enterprises at home and abroad have carried out active actions. A large number of scientific research achievements and enterprise practices have enabled the emergence of energy-efficient green machine tool technology, which makes machine tool products meet environmental protection requirements. The metal processing online reporter learned that high-efficiency motors and frequency conversion technology are one of them.
The energy cost of an electric motor accounts for more than 97% of its entire life cycle cost. Therefore, efficient motor products can be optimized on the basis of point, magnetic, mechanical and ventilation, using high-quality materials and advanced manufacturing processes. Effectively reduce all aspects of motor losses, reduce operating costs and speed up investment recovery. For example, Siemens' high-efficiency motors can reduce power losses by up to 45%, and the life of motors and lubricants is extended due to temperature reduction, as shown in Figure 1.
Figure 1 Siemens high efficiency motor
Frequency converters are commonly used for mechanically controlled fans, pumps and compressors, and motors that are often under low load. The use of innovative frequency conversion technology applied to the braking process can save energy and reduce consumption. In conventional transmission systems, the energy generated by braking is often wasted in the form of thermal energy, and the innovative inverter with regenerative energy feedback can feed the braking energy of the motor back into the grid instead of braking. Consumption in resistors, such as Siemens' SINAMICS G120D inverter, saves up to 50% in energy by implementing intelligent regenerative energy feedback technology in boost applications, as shown in Figure 2. In addition, some components such as braking resistors can be eliminated, reducing the installation space and heat generation of the drive system.
Figure 2 Siemens inverter
See the full text of "metal working" cold magazine 2012 12 "green energy-efficient machine tool technology Analysis and Development Prospects" (Author: Institute for Green Manufacturing Technology, Chongqing University Caohua Jun Luo Yi).
Solar Light,Solar Wall Light,Lithium Portable Solar Power Station,Outdoor Solar Flood Light
JIANGMEN MOSCOT OPTOELECTRONIC TECHNOLOGY CO.,LTD. , https://www.sensorsled.com