On designing high-efficiency and energy-saving REPMSM (rare earth permanent magnet synchronous motor) for use in Chinese oil fields

Our research and development, begun in 2000, have aimed at filling the need of Chinese oil fields to reduce energy cost. One type of high-efficiency and energy-saving REPMSM we developed is RSM132S-4 used in oil pumps. We make a careful theoretical analysis, including the energy-saving principle, the running vector chart and the starting process. The design of RSM132S-4 is described. The experimental results of RSM132S-4 are given, and they are the same as or better than the designed values of RSM132S-4. We also show that the experimentally determined performance values of RSM132S-4 are better than the performance requirements of high-efficiency motors going to be developed and used by the European Union in 2006 and by the United States in 2007.