Version 18 & 18R1 & 18R2 of Opera introduce the
following significant new features:
- The Winding Tool
- Tabbed Menu Interface customisation
- Material Database
- Upgraded Geometry kernel and CAD interfacing
- Multiphysics Analysis Setup Tool
- Multi-core (Parallel) GUI operations
- New 3D Mesher
- Transient Surface Impedance Boundary Condition (SIBC) with loss
- Thin Plate Boundary Condition
- Prism Gap Meshing
- Space Charge solution process improvements
- Additional analysis types
- Additional standard features
- Additional Support Knowledgebase (ASK) extension
For the list of supported hardware for Opera 18 click here.
For information on installing & upgrading click here.
To access the download site click
*To download the software you will need your customer number,
license number and access code. Please contact us if you do not
have this information.
The Winding Tool
The Winding Tool is a new
analytical tool that is a separately licensed option which is
available both within Opera-2d/PP and Opera-3d/Modeller.
The Winding Tool is dedicated to electrical machine design
within Opera FEA software. The main purpose of this tool is to help
users assess feasibility and optimality of different winding
The Winding Tool will provide users with the following
- Optimal winding layout (circular and linear
- Stars of Slots representation
- Winding factor harmonics
- Winding mmf harmonics
- GÖrges Diagram
Tabbed Menu Interface customisation
The position of the Tabbed Menu Interface (TMI) can be
customised to appear at the top of the screen, or on the left-hand
side. The graphical user interfaces can be now used with keyboard
shortcuts which have been defined for some of the more commonly
used functions. The full list of shortcuts is available in the New
Permanent Magnet Material data
Material data, in the form of BH and Demagnetization data is now
provided for a range of Magnequench MQ1 Materials.
Improved Geometry Kernel and Interfacing
The geometric modelling software used in Opera-3d/Modeller has
been upgraded to the latest release, ACIS R25. This provides
interoperability with additional CAD formats (licensed) and updates
the surface mesh generator. When importing CAD models, if material
and part numbers exist in the file, Opera will label the resulting
Opera geometry with the references.
Modeller Analysis Setup Tool
A new graphical tool has been included
in the Opera 3d/Modeller to prepare data for analysis. The Analysis
Setup Tool provides an interface to the ANALYSISDATA, DBCASEDATA
and MULTIPHYSICS commands to prepare a single analysis, or sequence
of analyses as part of a multiphysics analysis.
The tool consists of 3 panels:
- On the left is a list of the analysis types. These can be
dragged onto the central panel to be added into the sequence of
analyses at any position in the list.
- The central panel contains the sequence of analyses. This
sequence can be altered by dragging additional analysis parts into
the sequence (they can be dropped either at the end or earlier in
the sequence), or an existing sequence can be altered by deleting
analysis parts or SHIFT+dragging them to another
- If an analysis in the central panel is selected, its
properties and parameters can be adjusted using the property sheet
which shows in the panel on the right.
When the Analysis Setup Tool is closed, the commands
necessary to create the analyses with their parameters will be run
in the Modeller.
Transient Surface Impedance Boundary Condition (SIBC) with loss
The Surface Impedance Boundary Condition (SIBC) is now available
in Transient EM analysis, including Demagnetization and Motional
Analysis. SIBC simplifies the modelling of
materials with very small skin depths compared to the size of the
model. It avoids the need to create very small elements on the
surfaces of such materials.
The power loss calculated in a harmonic or transient analysis
using the Surface Impedance Boundary Condition can now be used as
the heat input into a thermal analysis in an automated multiphysics
Thin Plate Boundary Condition
The Opera-3d Magnetostatics solver has a new boundary condition
which can be used to represent thin plates of soft magnetic
material. When analysing certain applications such as ship
signatures and magnetic shields the geometry can lead to aspect
ratio problems in the mesh, whereby the area of a feature can be
much greater than its depth. Representing this with standard volume
elements can lead to either numerical problems in solution or
meshing problems in pre-processing. Using the Thin plate boundary
condition the feature is represented in the Modeller as a surface.
This simplifies the modelling process and provides much faster
Prism Gap Meshing
The Rotating Motional Electromagnetic
solver has been updated with an improved automated remeshing
algorithm. A new automated meshing technique creates prism elements
in any prism shaped cells in the air gap. Meshing with prisms is
fast and robust; the result is a big increase in solution
There is now a
choice of mesh generators in the Opera-3d Modeller. Mesh generator
Type II can create tetrahedral meshes in a wide variety of
geometries. If the traditional mesher strategy encounters issues
during the meshing process, the Type II generator can be used.
There are some special cases (e.g. filametrary conductors in
circuits and multiple periodicities) for which the new mesh
generator cannot yet be used. Mesh generator Type I can handle all
those special cases and can also create mixed meshes including
hexahedra, prisms and pyramids.
Space charge solution process
Langmuir-Fry V-I tabulations are now stored in a local database
file so that they can be re-used in other analysis runs or other
cases in a single analysis. Once a tabulation has been calculated
for a particular set of emitter parameters it will not be
re-calculated for that emitter type. This can significantly speed
up analyses where multiple models are run with identical emitter
Multi-core (Parallel) GUI operations
The Opera-3d CAD model import (with the LOAD command) now uses
In the Post-Processor multiple threads are used in two types of
- Fields from conductors
- Fields by integration
3D Machines Environment
Torque vs. Speed Analysis -
A new analysis has been added that evaluates the torque vs.
speed profile of permanent magnet and synchronous reluctance
machines. The existing analysis for Induction Machines has been
extended to capture the complete torque characteristic of an
Iron Loss calculations for SRMs -
The existing iron loss calculations for synchronous machines
have been adapted for SRMs in order to accurately account for
losses in the machine.
Wound Synchronous Machines -
The generator- open circuit (Static) analysis provides a
relationship between field current and induced voltage for all load
The generator- short circuit analysis provides a relationship
between the armature current and the field current.
The generator - load analysis provides information about the
generator operating point position in relation to the stability
The existing Opera-2d Direct Sparse Solver option is now
unlicensed. This entitles all supported users of Opera-2d to
benefit from a shorter analysis time.
The interface to Simulink from Opera-2d and Opera-3d is no
longer a separately licensed feature. All supported users of Opera
on Windows systems now have access to the Simulink interface.
The Reference Manuals have been updated to give details of the
new commands and options within the software.
The Addition Support Knowledgebase (ASK)
The ASK has several new articles:
- Calculation Time of Trajectories
- Comi-Script with User Interactions
- Converting $Const-$String-$Const
- Debugging of Control-Comi-Files
- Maximum Distance between Sample Rays
- Parallel Solvers.
- Conductors - Create your own Shapes
- Eddy Current Losses in 3d
- Measured Signals used in Circuit Editor
- Parallel Solvers
- Patch method to calculate Forces in 3d
- Picking by Position
- Replicating a 3-phase PWM Current Source
- Using Opera to control Matlab®