Electrical machine technology is moving fast, as the drive for electrification challenges electrical machine designers to achieve higher torque densities and higher speeds. Engineers need reliable tools not only to conduct electromagnetic analysis of the motor, but also to perform structural analysis.
Romax have a proven track record in electro-mechanical simulation and design, rotor dynamic simulation for industrial generators and electrical machine NVH development. Romax Evolve incorporates this expertise into application specific tools for the structural design and analysis of electric machines, which integrate into powerful multi-fidelity full system analysis.
What’s new in Romax 2022?
- JMAG-Express Online Integration: JMAG-Express Online can now be opened from within the Romax environment, so users can generate an electric machine design and import the machine geometry directly into the Romax model as part of an early-stage structural analysis.
- 2D System Modelling Worksheet: a new system-level worksheet with drag-and-drop tools, allowing intuitive, fast modelling which is easy-to-use, even for beginners and non-experts.
- Equivalent Radiated Power Calculation: this method of estimating the total acoustic power radiated by a vibrating body is a useful metric for investigating the effects of design changes on radiated noise in a fast (but approximate) way.
- Reporting of bearing passing frequencies and orders: The passing frequencies found in rolling bearings are commonly used to identify the source of defects. Rolling bearing passing frequencies and orders are now reported in the Bearing Results worksheet.
- Romax-to-Adams Export Functionality: Romax models can be exported in a format that can be imported into Adams. This allows transmission and ePowertrain models to be easily created in Romax and then transferred to Adams to be included in system-level simulations. It also means the same ePowertrain model can be used for static and steady-state dynamic analysis (Romax) and transient, non-linear analysis (Adams).
- Bearing Dynamics Desktop Application and Support for Cylindrical Roller Bearings: our Bearing Dynamics capability is now available as a desktop application, for analysis of failure modes not considered by the standard methods, with an updated UI and support for new bearing types.
- Parametric Study and Batch Running Improvements: new actions, targets and results available.
Customers can get more information on these features via our Support Portal. If you do not have an active support agreement but would like to find out more, please get in touch with us today.
Feature Highlight: Acoustic Analysis
For a thorough understanding of NVH performance in electrical machines, engineers need to be able to simulate noise and vibration performance from the earliest stage in the design process. Romax Evolve’s Acoustic Analysis adds radiated noise capabilities to the electric machine simulation and multi-fidelity NVH analysis provided by Romax Evolve to give you the complete picture as part of a CAE-led component design process.
Based on renowned and trusted meshing and solver technology from Free Field Technologies, Romax Evolve’s Acoustic Analysis product option forms a complete end-to-end process which allows you to predict radiated noise quickly and simply, without any in-depth experience of acoustic simulation. In combination with Romax Evolve’s vibration prediction tools, you can identify and mitigate the root causes of radiated noise problems in a unique, application-specific tool.
Dedicated model building
- Parameterised model build for rapid structural modelling
- Comprehensive bearing catalogues
- Create, import and condense FE housing components
- Import/export geometry with leading CAD tools
- Import motor efficiency map
- Interfaces to electromagnetic FE software packages for electrical machine geometry and excitation import
Trusted analysis
- Fast static analysis of electrical machine housing and shaft deflections
- Evaluate bearings for durability
- Evaluate motor efficiency and energy consumption considering bearing, seal and electromagnetic loss mechanisms
- Calculate rotor-dynamic behaviour of rotor shaft system
- Capture the effects of UMP on static and dynamic behaviour
- NVH analysis of electrical machine including electro-mechanical excitation sources and rotor mechanical imbalance
- Embedded acoustic solver brings complex simulation of radiated noise to the non-expert
Integrated workflow
- CAE led design – consider structural and NVH performance from the early development stages to prevent problems before they arise
- Support the design process from initial structural concept through to detailed housing design, test planning, and validation
- Sits alongside other Romax products as part of a comprehensive toolchain for component and system-level analysis
“We have created a promising powertrain concept, offering high efficiency in both electric and hybrid driving, good driving performance, and simple transmission technology. All design and efficiency calculations, as well as modelling and simulations, were done using Romax.”
Watch a demo video
What you’ll learn:
- How to model an electric machine within Romax Evolve
- An overview of the structural analysis, vibrational analysis and acoustic analysis within Romax Evolve
- How Evolve can interface to other Romax and third party tools
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Complex Radiated Noise Simulation
Validation of NVH Analysis