Energy storage for machines

Project Details


In production machines hydraulic and pneumatic actuation is being replaced more and
more by electrical alternatives. Also, synchronized motions that were traditionally
realized using a single motor and mechanical couplings are begin replaced by
individually driven motors with electrical synchronization. As a result, electrical
energy flows in the machine increase likewise. Moreover, as energy prices are
increasing, it might become interesting to regenerate energy during braking and store
this energy for future usage. Storing this energy in electrical form seems to be a
promising alternative. Even without regeneration, on machines with several drive
lines the question arises how electrical energy can be best distributed over the drive
lines to get an as smooth operation as possible.
However, at this moment no tools exist for machine builders (i) to design the most
optimal electrical power system for their machines and (ii) to decide how to manage
the power flow in this system in an optimal way.
Recently, significant developments have been made on electrical energy storage using
batteries and supercapacitors, mainly driven by the hybrid drive sector [e.g. SuBat,
ElecCars, SupCapHV]. The question now arises if these developments can be used in
a machine production setting to reduce energy consumption, increase performance or
reduce component sizing and thus cost.
Although it is expected that energy will be more and more stored electrically, due to
the recent developments on electrical energy storage components, for specific
applications it might still be more favorable to use other forms of energy storage.
When hydraulics are for example already available on the machine, hydraulic storage
might be more cost-efficient than electric energy storage; for specific energy-powerdensity
relations electric storage elements might not be available and mechanic energy
storage has to be applied. Therefore, the use of these non-electrical energy-storing
elements will be analyzed theoretically.

To provide a solution to the above mentioned issues, the goal of this project is to
develop a methodology that allows to:
· Optimally select electrical energy storage components for a production
· Optimize the electrical power management in a production machine with
batteries and supercapacitors.
Also, a state of the art on mechanic, hydraulic and pneumatic energy storage
components for a production machine will be delivered.
Effective start/end date1/07/0930/06/12

Flemish discipline codes

  • Mechanical and manufacturing engineering
  • Electrical and electronic engineering
  • Chemical sciences


  • Electric Installations
  • Computational Electromagnetics
  • Numerical Electromagnetic Simulations
  • Lighting
  • Computational Electrochemistry
  • Electric Vehicles
  • Electrochemistry
  • Traction Batteries And Battery Chargers
  • Cathodic Protection