the market for electric motors (vehicles)
1.1 Market definition and delimitation
- What is an electric motor?
- Which applications for electric motors?
According to the an article of Techno-Science.net, an electric motor is a device for converting electrical energy into mechanical energy . Since electric motors are all capable of producing electricity through a mechanical means that would make them run, specialists prefer to call them "electrical machines" such as generators, dynamos and alternators. The distinction between an engine and a generator is usually made on the basis of the final use of the machine.
In addition, the motors can be linear or rotary. The conversion of electrical energy into mechanical energy is the product of a torque by angular displacement for rotary motors while it is the product of a force per linear displacement for a linear motor.
The third essential distinction is that motors, whether rotary or linear, are supplied with direct or alternating current . AC motors are often considered stronger, not using brushes that wear out quickly.
Electric motors are already used in many fields, from microsystems to very large production machines. A research paper of the ENS Cachan dating back to 2000 argues that The average French family generally has more than 100 children from the watch actuator, to household appliances and automotive electronics. Since that article, the explosion of home automation (automatisms in the home) and connected devices (according to usine-digitale.fr , each household could have an average of 30 connected objects by 2020) is expected to increase the number of electric motors for the general public.
Source Electric motors for mass production applications ENS Cachan
In addition to the omnipresence of electric motors for the general public, the previous diagram shows the following industrial applications for electric motors more powerful (>3kW). They are very numerous but we can quote OME motors which offers electric motors for the mining, steel, sugar, petrochemical, electric or wind industries. Another example is the automotive industry, with cars containing more and more electronics and engaged in a transition to fully electric or hybrid cars.
Thus, the electrification of production systems, transport or final energy consumption opens the way to a massification of the use of electric motors in the context of the fight against CO2 emissions.
The spectrum of the study being very broad, we will focus on manufacturers of electric motors for the industrial and transport sectors. For France, this corresponds to the iNSEE classification naf 27.11 for the manufacture of electric motors, generators and transformers.
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