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MotorWizard is a template-based motor design software which is completely integrated inside SOLIDWORKS. It allows SOLIDWORKS users to build and analyze different electric machine designs. MotorSolve version 6 is the complete design and analysis software for induction, synchronous, electronically and brush-commutated machines. Motor and generator designers can use this software for quick virtual prototyping.
As medias and governments are pushing for ‘Electrification’ as a global hype solution against Global Warming… industry players have to quickly embrace this pushed revolution nobody can ignore anymore to still be part of the game.
For example while combustion engines today performances are the results of several millennia of studies and researches from discovery of fire by first caveman engineer to direct injection combustion engines, Automotive electric engineers need to design electric powertrains reaching equivalent performances based on a mid-17th century experiment by Otto von Guericke.
This development speed, dynamism and those new challenges for electric machine development can only be overcome using extensive CAE simulation.
Simcenter SPEED software supports engineers in virtually validating design choices via detailed analytical simulation, quick and smart usage of 2D finite element magneto-static analysis. It includes all necessary theoretical and physical models for a rapid e-machine design with a flexible approach and a seamless interface with links to even more precise and detailed electric machine analysis and simulation such as multi-physics 2D and 3D Finite Element/Finite Volume (FE/FV) magneto-static or magneto-transient, thermal, mechanical or vibro-acoustic.
- Electric machine template: set-up an electric machine model in minutes
- Multi-physic software link: seamless import to Finite Element software
- Design exploration: automatically optimize electric machine performance
- System level simulation: model export to system level model within Simcenter Amesim
Simcenter SPEED supports most common machine types covering motor, generator and includes as well inverters.
User can benefit from pre-defined templates for following machine technologies:
- Synchronous machines (PC-BDC)
- Induction machines (PC-IMD)
- Switched reluctance machines (PC-SRD)
- Brushed PM-DC machines (PC-DCM)
- Wound-field commutator machines (PC-WFC)
- Axial flux machines (PC-AXM)
Seamless link with Multi-physics software
In order to improve simulation accuracy, Simcenter SPEED provides links to several general-purpose 2D and 3D electromagnetic finite element solvers such as Simcenter STAR-CCM+ and Simcenter Motorsolve or to Simcenter SPEED dedicated 2D magneto-static program, PC-FEA. These enable modeling and studying of the electric machine more precisely if needed, for example in cases of high saturation, under fault conditions, and non-SPEED template-based geometries.
In general, users can connect Simcenter SPEED with other tools required for the complete electric machine solution using various scripting or programming languages. More specifically, automation makes use of the scripting capabilities as driving Simcenter SPEED on its own or together with other programs such as STAR-CCM+. This automated workflow follows the scripting approach and uses STAR-CCM+ and its multi-physics solvers for electromagnetic, thermal (full 3D conjugate heat transfer) and mechanical stress analysis along with Java scripts to provide and feedback additional information.
Vibro-acoustic can also be studied combining stator and housing subsystem FE models with a surrounding free space BE model in order to assess electric machine sound quality. Objective being to eliminate annoying tonal noise through simulation within Simcenter 3D Acoustics.
What is expected final outcome of such Model Based System Engineering approach? Answer: a support in making best design choice, and by ‘best’ this means optimized feasible choice, again through an efficient and seamless workflow.
As mentioned previously, Simcenter SPEED provides nearly instantaneously results thanks to its analytical approach, which makes it very suitable for Design Space Exploration programs supporting customers with so to speak “What if” studies and optimization runs.
HEEDS is a powerful software package in the Simcenter portfolio that automates this design space exploration process and Simcenter SPEED provides a built-in graphical user interface to access HEEDS.
Simcenter SPEED offers a dedicated Simcenter Amesim export capability for the in-built System Simulation models. The export function computes the important e-machine parameters or flux linkage and iron losses data files which are then automatically used by Simcenter Amesim machine models. Outcome for user is the capability to consider electric machine electromagnetic non-linearity in the context of electric machine integration, early in development cycle, as you can see in the following video:
For more information:
As a motor operates from no load to full load, its torque varies with speed. The relationship between speed and torque is often shown in a graph, called a speed-torque curve. This curve shows the motor’s torque, as a percentage of full-load torque, over the motor’s full speed range, shown as a percentage of its synchronous speed. NEMA classification is based on the speed-torque curves. Typical speed-torque curve for designs A, B, C, and D is shown below:
Characteristics of NEMA Three phase Motor Designs
NEMA Design A Motors
The table below shows the typical characteristics of all NEMA A Motors:
Basic Characteristics |
|
Locked Rotor Torque (% of Full-load Torque) | 70 - 275% |
Pull - Up Torque (% of Full-load Torque) | 65 - 190% |
Breakdown Torque (% of Full-load Torque) | 175 - 300% |
| Locked Rotor Current (% of Full-Load Current) | - |
Slip | 0.5 - 5% |
Areas of Application | Fans, blowers, centrifugal pumps and compressors, motor-generator sets, etc., where starting torque requirements are relatively low |
| Efficiency | High or Medium |
NEMA Design B Motors
The table below shows the typical characteristics of all NEMA B Motors. NEMA design B motor is the most common three-phase AC induction motor design.
Basic Characteristics |
|
Locked Rotor Torque (% of Full-load Torque) | 70 - 275% |
Pull - Up Torque (% of Full-load Torque) | 65 - 190% |
Breakdown Torque (% of Full-load Torque) | 175 - 300% |
| Locked Rotor Current (% of Full-Load Current) | 600 - 700% |
Slip | 0.5 - 5% |
Areas of Application | Fans, blowers, centrifugal pumps and compressors, motor-generator sets, etc., where starting torque requirements are relatively low |
| Efficiency | High or Medium |
NEMA Design C Motors
The table below shows the typical characteristics of all NEMA C Motors:
Basic Characteristics |
|
Locked Rotor Torque (% of Full-load Torque) | 200 - 285% |
Pull - Up Torque (% of Full-load Torque) | 140 - 195% |
Breakdown Torque (% of Full-load Torque) | 190 - 225% |
| Locked Rotor Current (% of Full-Load Current) | 600 - 700% |
Slip | 1 - 5% |
Areas of Application | Conveyors, crushers, stirring motors, agitators, reciprocating pump and compressors, etc., where starting under load is required |
| Efficiency | Medium |
NEMA Design D Motors.
The table below shows the typical characteristics of all NEMA D Motors:
Basic Characteristics |
|
Locked Rotor Torque (% of Full-load Torque) | 275% |
Pull - Up Torque (% of Full-load Torque) | - |
Breakdown Torque (% of Full-load Torque) | 275% |
| Locked Rotor Current (% of Full-Load Current) | 600 - 700% |
Slip | 5 - 8% |
Areas of Application | High peak loads with or without flywheels such as punch presses, shears, elevators, extractors, winches, hoists, oil-well pumping and wire-drawing motors |
| Efficiency | Low |
NEMA Design E Motors
This is the newest NEMA design category. Below are the typical characteristics of NEMA E motors:
Free Electric Motor Design Software Developer
Free Electric Motor Design Software Engineer
Free Electric Motor Design Software Pdf
Basic Characteristics |
|
Locked Rotor Torque (% of Full-load Torque) | 75 - 190% |
Pull - Up Torque (% of Full-load Torque) | 60 - 140% |
Breakdown Torque (% of Full-load Torque) | 160 - 200% |
| Locked Rotor Current (% of Full-Load Current) | 800 - 1000% |
Slip | 0.5 - 3% |
Areas of Application | Fans, blowers, centrifugal pumps and compressors, motor-generator sets, etc., where starting torque requirements are relatively low |
| Efficiency | High |