Total System Efficiency Power Transmission（整个系统输电效率）.pdf

Total System Efficiency Matt Murray, SEW Eurodrive otal cost of ownership is not just a buzz phrase; it’s a ponents results in 94.15 percent efficiency. Another way to philosophy for creating a sustainable business model look at this is 5.85 percent of the energy put into this system Tin today’s environment of shrinking resources and is merely converted to heat and wasted, and this is with an increasing energy costs. Based on worldwide energy ideal system. Now let’s examine a more realistic system using usage figures (Ref. 1), humans will double their current good, efficient components, as shown in Equation 2. energy consumption by the year 2035 (a mere 25 years), These good components result in a total system efficiency as shown in Figure 1. Much of the industrial energy being of 79.76 percent. A staggering 20.24 percent of the input consumed by systems is wasted through inefficiency. For this energy is simply converted to heat and wasted. Remember, article, a system will be defined as the following components these are good components. How can we prevent this loss of working together: electrical input power, variable frequency energy, and where do we have the greatest potential for energy drives, induction motors, gearboxes and transmission ele- savings (Ref. 2)? The greatest potential gains in efficiency lie ments (chains, belts, etc.). in the mechanical components, followed by electronic speed No single component withi