Curbing energy waste

EEMODS conference supporting the development of increasingly efficient motor driven systems

By Zoé Smart

The 8th International EEMODS (Energy Efficiency in Motor Driven Systems) Conference took place in Rio de Janeiro, Brazil, on 28-30 October 2013. The event brought together representatives of governments and international organizations, manufacturers, program managers and experts who shared their views and latest developments in the area of motor driven systems. Professor Martin Doppelbauer gave a presentation on ‘Current Developments in IEC Standards for Energy Efficiency of Electric Motors’.

Industry accounts for close to 40% of the world’s electric energy consumption...

First of its kind

Organized by the European Commission, the first EEMODS conference was held in Lisbon in 1996. Such was its success that a follow-up conference was held in London in 1999 and the event now takes place every two years. It attracts participants both from research and academia as well as legislators, regulators and company stakeholders from around the world.

IEC Standards invaluable

With industry accounting for close to 40 per cent of the world’s electric energy consumption and two-thirds of this used to drive electric motors, ensuring they are as energy efficient as possible is primordial. The IEC has been at the forefront of this effort, with IEC International Standards playing an important role in the determination of energy efficiency and the classification of motors. For example, IEC 60034-30Rotating electrical machines - Part 30: Efficiency classes of single-speed, three-phase, cage-induction motors (IE-code), which classifies motors into four energy-efficiency levels has been adopted by the EU and a number of countries are in the process of giving up local regulations in its favour.

Energy efficiency of motor driven systems way forward

As a member of TC (Technical Committee) 2: Rotating machinery, and of its WG (Working Group) 12 and WG 28 and convenor of WG 31: Efficiency classes, Martin Doppelbauer is an expert in the field. At the EEMODS conference he presented the latest developments in the work of WG 28 and WG 31. Asked about what lies ahead he says: “The energy efficiency of motors themselves is extremely important, and a high level of efficiency has already been reached. The focus now needs to be on the energy efficiency of the whole motor driven system which includes the motor, power converter, gearbox, etc. This is where a lot of energy is still wasted, and where further savings can be made.” With both manufacturers and legislators keen to further reduce energy consumption, there is no doubt this proposition presents one of the most concrete ways forward.

Depositphotos_15417855_original Industry accounts for close to 40% of the world’s electric energy consumption...
Depositphotos_13739834_original ...and two-thirds of this are used to drive electric motors
abb_drives Motor assembly line at ABB Electrical Motors Factory in Aleksandrów Łódzki, Poland (Photo: ABB)