JMAGExpress is a tool to support motor design. All templatebased, it includes everything from concept design with JMAGExpress Quick Mode to basic design and detailed design with JMAGExpress Power Mode. It can export motor models (JMAGRT models) at any stage, allowing SILS and HILS to be done.
Functions
Freely define geometry templates
 Templates for PMSMs, induction motors, brush motors, and universal motors have all been prepared.
 You can add geometries created in JMAGDesigner as templates.
 JMAGExpress Power mode can evaluate the motor characteristics of PMSMs and induction motors. Use JMAGDesigner for brush motors and universal motors.
Builtin database
 You can search for model data by design parameters, output, and design date from a wealth of design proposals.
E.g. Searching for model data where the slot combination is 4 poles and 24 slots
– Search model data where the average torque is over 3 Nm
– Search model data that was calculated on May 25, 2012
Geometry sizing
 JMAGExpress Power mode will recommend a geometry and drive conditions if you simply enter the minimum output expected of the motor.
 Of course, you can also narrow down the geometry and drive conditions by entering more information.
An extensive material database
 JMAGExpress Power mode has approximately 730 types of characteristics data builtin, just like JMAGDesigner.
 Precise material designs are completed by selecting the material name.
Parametric Analysis
 Geometry, materials, windings, and drive conditions can be entered as parameters, which enables characteristics evaluations.
 Multiple designs can be easily compared.
Running the analysis remotely
 You can use an external calculation server.
E.g. When there are a lot of analysis cases
Saving and reading setting parameter files
 You can save setting parameter files separately from geometry data.
 This should come in handy during system automations like linking with opimization softwares.
JMAG Function Videos
JMAGExpress Quick mode
JMAGExpress allows calculation of basic motor properties in one second.
Just by entering the geometry template, materials, winding, and drive conditions as parameters, you can obtain the induced voltage constant, torque constant, inductance properties, current vs. torque properties, revolution speed vs. torque properties, iron loss/copper loss properties, etc. in a split second. When the desired power (W) is specified, the size and comparative loading needed to achieve it are calculated automatically.
JMAGExpress screen
Quick Mode results screen
Features
 Just enter the geometry template, materials, winding, and drive conditions as parameters.
JMAGExpress screen
Geometry Modeling
Material Designs
Coil Settings
Drive Conditions
 Revolution speed vs. torque properties, iron loss/copper loss properties, etc. are instantaneously displayed in a graph.
 Motor properties can be viewed in a machine constant table.
Properties Graph
Machine Constant Table
JMAGExpress Power mode
JMAGExpress Power mode is a design tool that allows you to perform motor design and evaluation by simply inputting parameters, like geometry, winding, and rotation speed, that follow a template.
It utilizes the finite element method’s highly accurate analysis ability to evaluate eddy current losses in magnets and iron losses from local magnetic saturation or harmonic currents.
JMAGExpress Power mode also supports more detailed design studies by seamlessly using models and results from JMAGDesigner, the electromagnetic field analysis software.
Features
 Simply input the design parameters for geometry, materials, winding, and drive conditions.
 No prior analysis knowledge is necessary.
 It automatically carries out the process from analysis model creation to results output.
 Magnetic flux density distribution or iron loss density distribution
 Joule loss frequency analysis
 Magnet eddy current loss distribution
 Efficiency maps
 Start up JMAGDesigner by clicking the calculation result screen.
 Generate an RT model while maintaining the design parameters.
A comparison of JMAGExpress Quick mode and JMAGExpress Power mode
Quick mode
Target motor  Output 

PMSM IM Externally excited synchronous machine 
Simple calculation

SRM 
Simple calculation

Brush motor 
Simple calculation

Woundfield AC synchronous machine 
Simple calculation

Power mode
Target motor  Output 

PMSM 
Basic characteristics
Iron loss analysis considering PWM carrier harmonics
Magnet eddy current loss analysis that accounts for PWM
Segregation analysis of torque components

IM 
Equivalent Circuit Parameters
Drive Characteristics
Torque Characteristics
Line Start Analysis

SRM 
IPsi characteristics
Static characteristics
Drive characteristics
Drive characteristics
