Motor CAD Software

Motor-CAD Thermal

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.

Thermal Complex Duty Cycle

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.

Thermal Radial Cross Section

Motor-CAD models are available for the following cooling methods:

  • natural convection (TENV)
  • forced convection (TEFC)
  • through ventilation
  • water jackets (several configurations)
  • submersible
  • flooded
  • wet rotor and wet stator
  • spray cooling
  • radiation
  • conduction

Users are also able to include various mounting configurations in the model that can provide heating or extra cooling to the machine.

Thermal Cooling Circuit

 

FE-Therm Module

Motor-CAD uses powerful analytical methods to calculate the performance of electric machines and cooling systems.

MDL’s 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:

Latest News

MDL Torque Issue 28: April 2017

Cut edge analysis using Motor-CAD FEA
Launch of MDL Film
Motor-CAD training in China
Upcoming Events

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MDL Torque Issue 27: March 2017

FEA Measurement Functionality
New IPM Magnet Geometries
Launch of web-site
Welcome to Erasmus Student

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MDL Torque Issue 26: February 2017

Square Wave Drive Mode
Welcome to new staff
Presentation at Advanced E-Motor Technology 2017

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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

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MDL Torque Issue 24: October 2016

Multiphase Developments
APC-E Machine Launch Event
China Tour

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MDL Torque Issue 23: September 2016

Motor-CAD IM-EMag Development
Motor-CAD at Cenex-LCV Event
Motor Design Limited Headlines at Battery Show

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MDL Torque Issue 22: July 2016

Release of Motor-CAD Version 10
Workshop with Ansys in Munich
MDL Sponsorship of 24th Symposium on Electromagnetic Phenomena in Nonlinear Circuits
Near win in Ellesmere charity regatta!

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MDL Torque Issue 21: June 2016

Exciting Work on Fan Cooling
Presentation at European PhD School

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MDL Torque Issue 20: May 2016

Prize Paper on Ecological Vehicles

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MDL Torque Issue 19: April 2016

Evoque E & HVEMS Projects

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Events

CWIEME Berlin : 20th – 22nd June 2017

Dr David Staton and Dr James Goss are presenting:
Open Source Electric Motor Models for Commercial EV Hybrid Traction Motors  
Electric Motor Design: Trade-Off Analysis Including Motor Type, Winding Type, Material and Coil Type Selections.

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Engine Expo 2017, Stuttgard : 20th-22nd June 2017

Dr Unai San Andres and Giuseppe Volpe will be attending the Expo. For more information please click here.  
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Motor-CAD General Training, Italy : 14th-15th June 2017

Location: SPIN Applicazioni Magnetiche Srl - Via Corselli 11 - Piacenza, Italy Dr James Goss, Head of Technology at MDL, will be delivering a general Motor-CAD training course. This is being organised jointly with our Italian distributors, SPIN. For more information...
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CADFEM – MDL workshop: Simulation of Electric Machines 13th June

Venue: Airport House Bussiness Centre, Purley Way, Craydon, Surrey, CR0 0XZ

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OPTIM-ACEMP Conference : 25th – 27th May 2017

Venue: Cheile Gradistei Fundata Complex
Dr Mircea Popescu will be delivering the Keynote Presentation on Electric Machine Design for Automotive Applications .

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18th European PhD School : 22nd-26th May 2017

Location: Angevian Castle, Gaeta, Italy Giuseppe Volpe, who is sponsored by MDL, will be presenting his PhD work to date. For more information please click here.
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IEMDC : 21st – 24th May 2017

Location: Miami Dr James Goss will be attending and presenting a paper titled “A Fourier Approach for Computationally Efficient Modelling of the Operating Envelope in PMSMs” For more information please click here.
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IEEE WEMDCD : 19th  April 2017

Location: University of Nottingham, United Kingdom Attended by Dr Mircea Popescu and Giuseppe Volpe For more information please click here.
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CWIEME Shanghai : 15th – 17th March 2017.

Date: 15th – 17th March 2017.
Venue:Shanghai World Expo Exhibition & Convention Center
Dr David Staton is presenting:
Open Source Electric Motor Models for Commercial EV & Hybrid Traction Motors.
Electric Motor Design: Trade-Off Analysis Including Motor Type, Winding Type, Material and Coil Type Selections.

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Webinar – Solving Electric Vehicle Powertrain Problems Using RomaxDESIGNER & Motor-CAD

Date: Wednesday 15th March 2017 at 8am or 4pm GMT.
Dr Mircea Popescu, Head of Engineering at MDL, and Kristian Kuyumdzhiev, Applications Engineer from our partner Romax Technology, will solve electric vehicle powertrain problems using RomaxDESIGNER R17 and Motor-CAD.

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DISTRIBUTORS

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.

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