IEC61800-9 System Standards as a Tool to Boost the Efficiency of Electric Motor Driven Systems Worldwide

Abstract

Recognition of the energy savings potential in motor driven systems has led to the development of energy e ciency testing and classification standards for motors and end-use equipment (e.g., pumps and fans) and the implementation of minimum energy performance regulations targeting them worldwide. However, these standards and regulations have been limited to components, disregarding the interaction between them. The energy savings achievable by addressing and improving the entire system are potentially much higher in relation to those achievable when considering individual components. Recently, an e ort to develop standards in this regard was carried out by standardization bodies (IEC and ISO) leading to the publication of the IEC61800-9 Power Drive System standard series. The paper, in its first part, describes recent evolutions in electric motor energy-e ciency standards and in the implementation of related regulations worldwide. In the second part of the paper, using the latest energy e ciency test and classification standards, a comparative analysis of di erent energy-e cient motor technologies is presented. Using results from laboratory tests combined with data provided by manufacturers, di erent power drive systems are compared considering di erent operating points in two typical pumping systems. Estimated economic savings from a total cost of ownership perspective are presented.