[128] Systems – the elusive challenge

This remains true, but the extended product approach is difficult to translate into a workable regulation. The international standard EN 61800-9 (March 2017) describes efficiency categories for the extended product level at full load and designated part load conditions. But how to organise market surveillance?

For circulator systems, Ecodesign regulation is upcoming (2020), but apart from that, regulation of the extended product approach has for now been abandoned.

A more active promotion of IEC 61800-9 could be an alternative to regulation, as well as promoting motor system efficiency via ISO 50001 on energy management and its implementation guides.

[126] Keep energy supply chains short

To illustrate this principle, let’s compare two routes to use renewable power in mobility. Direct use of electricity in a battery electric vehicle shows an overall efficiency of about 70% (grid losses, electric motor and power electronic losses, battery use, mechanical losses). Indirect use through syn-fuel and an internal combustion engine shows an overall efficiency of 13%, more than 5 times lower (power to liquid efficiency, transport, internal combustion engine losses, mechanical losses).

[119] The flexibility potential in motor systems is downstream

A good example of a motor-driven system with built-in buffer capacity is water management.

Driven primarily by pump systems with electric motors, water management, purification and desalination score high on nearly all flexibility criteria. Moreover, it is a sector of growing concern because of the increasing need and decreasing availability of fresh water sources in many regions of the world, including Europe. In short, this sector represents a growing opportunity to make motor systems participate in demand response.

[35] Can electricity be a fuel?

Biofuels can reduce greenhouse gas emissions to varying degrees, when compared to fossil fuels. The reduction potential varies between 10% and 90%, depending on the fuel used and how it is managed (in some extreme cases, due to land use change, the carbon balance can be even worse than the fossil alternative).

A new development since 2012 is the rapid electrification of transport, for which there is both political momentum and market developments. In carbon-intensive electricity systems, some biofuels can perform well, but on average, electricity works better than most fuel types, and will do so increasingly as the electricity system decarbonises.

[2] The promise of variable frequency drives

Variable frequency drives have been on a steady rise since well over a decade. Eventually, over half of electrical motors may be equipped with drives.

Given today’s competitive VSD market and their excellent functionality that come as standard, it is easy to regard VSDs as a commodity product. Nevertheless, what this tweet stated in 2009 is still valid. To get the best out of a VSD it remains vitally important to know how to apply it. Therefore, if you are wanting a high performing and long lasting drive system, buying from a supplier with excellent applications support can still make the difference.