Coordination of IEC and ISO Standards for Energy-Efficient Electric Motor-Driven Systems

Electric Motor-Driven Systems (EMDS) are currently responsible for some 53% of global electricity consumption (International Energy Agency, World energy outlook 2016, IEA, Paris, 2016). Optimizing the selection of the respective components (motor control, motor, mechanical equipment, and application) is a strategic prerequisite to realize the energy savings potential at system level; moving the optimization from component level to system level can realize extra energy savings with a factor 2 to 5 (van Werkhoven M, Werle R, Brunner CU (IEA 4E Electric Motor Systems Annex), Policy guidelines for motor driven units, part 1: analysis of standards and regulations, Zurich, Switzerland, 2016; Policy guidelines for motor driven units, part 2: recommendations for aligning standards and regulations for pumps, fans and compressors, Zurich, Switzerland, 2018). The design of the components, their sizing and selection, and their combination to form an optimal motor system together with a well-controlled operation need a system approach to optimize EMDS energy performance. Such system approach is not only needed at design level but also when it comes to standardization.