The thermal model in Motor-CAD is based upon analytical lumped-circuit analysis making it extremely fast to calculate. This allows the user to perform ‘what-if’ calculations in real time. Alternative numerical methods typically require days or even weeks to model and several hours to calculate a solution.
All the thermal resistances and capacitances in the Motor-CAD model are calculated automatically from geometric dimensions and material properties. The user does not need to be familiar with complex heat transfer phenomena such as dimensionless analysis correlations for convection. Motor-CAD automatically selects and solves the most appropriate formulation for a given surface and the cooling type selected. Motor-CAD features efficient, accurate and robust mathematical algorithms for forced and natural convection, liquid cooling, radiation and conduction. An extensive library of proven laminar and turbulent convection correlations are used to give accurate models for all internal and external surfaces. The airgap model includes laminar, vortex and turbulent convection.
The software is used to optimise the cooling of a wide variety of motor types and cooling methods. The fast calculation speeds are huge benefit when modelling complex duty cycles, such as traction motor drive cycles, and applications such as elevator load cycles.
Motor-CAD modules are available for the following motor types:
- Brushless permanent magnet motors (BPM)
- Outer rotor BPM motors
- Induction motors
- Permanent magnet DC machines
- Switched reluctance motors
- Synchronous reluctance motors
- Synchronous machines
- Claw pole machines
- Universal motors
There are many different motor types, housing types and cooling types available in Motor-CAD.
Motor-CAD models are available for the following cooling methods:
- natural convection (TENV)
- forced convection (TEFC)
- through ventilation
- water jackets (several configurations)
- wet rotor and wet stator
- spray cooling
Users are also able to include various mounting configurations in the model that can provide heating or extra cooling to the machine.
Motor-CAD uses powerful analytical methods to calculate the performance of electric machines and cooling systems.
The Motor-CAD FE-Therm add-on module provides increased detail on conduction heat transfer in various components. For example this allows visualisation of the hotspot in the winding.
It can be used to analyse conduction heat transfer for complex geometries such as multi-layer interior magnet motor rotors.
FE-Therm can be used to calibrate analytical lumped circuit models, thus improving accuracy.
It is fully automated and takes only a few seconds to calculate.
This image shows an automatic model generation with detailed conductor mesh:
The image below is a form wound machine showing the winding hotspot:
This shows slot water jacket cooling with two cooling ducts inside the slot:
This shows magnet losses impacting on temperatures:
The features in the FE-Therm module allow for a full 3D model of the machine to be generated with results as shown here:
MDL Torque Issue 33: November 2017
Switched Reluctance Machine E-Mag
Welcome to new staff
Motor CAD User Meeting & Training in USA
Motor Design Headquarter relocation
MDL Torque Issue 32: September 2017
Ariel Hipercar Unveiled
New Office for MDL
MDL Torque Issue 31: August 2017
Motor-CAD Lab Speed Increase
MDL Torque Issue 30: June 2017
Success at Exhibitions
Welcome to new Intern
MDL Torque Issue 29: May 2017
Double Rotor Cage Induction Machine
Motor-CAD Training Course on Design of BPM Motors
Motor Design Ltd Welcomes Sara Roggia
MDL Torque Issue 28: April 2017
Cut edge analysis using Motor-CAD FEA
Launch of MDL Film
Motor-CAD training in China
MDL Torque Issue 27: March 2017
FEA Measurement Functionality
New IPM Magnet Geometries
Launch of web-site
Welcome to Erasmus Student
MDL Torque Issue 26: February 2017
Square Wave Drive Mode
Welcome to new staff
Presentation at Advanced E-Motor Technology 2017
MDL Torque Issue 25: November 2016
MDL Motor Design Training Course, 15th – 18th November 2016, Oswestry, UK
IET Seminar on Practical Control of Salient PM Motors
IEEE IAS Chapter Prominent Lecture on Practical Aspects in the Design & Analysis of Electric Machinery for Power Traction Application
Designing Electric Powertrains for Low Noise Workshop, California, December 06, 2017
EDPC, Wuerzburg, 5th – 6th December 2017
Electric & Hybrid Aerospace, Cologne, 16th – 17th November 2017
Webinar – Optimal layout of electric machines using Motor-CAD and ANSYS optiSLang, 8th November 2017
Design of Brushless Permanent Magnet Motors, 7th – 8th November 2017
EDPE, Duvrobnik, 4th – 6th October 2017
ECCE, Cincinnati, 1st – 5th October 2017
Motor-CAD Users Meeting and Training – 27th to 29th September 2017
CoilTech, Pordenone, 27th – 28th September 2017
Romax European Users Forum, Paris, 26th – 27th September 2017
The Motor-CAD software is distributed worldwide. Our carefully selected partners are experts in the use of the software and can provide support and training.
To find a distributor near you, click on the link below.