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 2021?
- Import Electric Machine geometry from JMAG-Express. Combine the power of Romax Evolve, a multi-fidelity environment for mechanical simulation of electric machines, with JMAG-Express, a concept-level online parametric design tool for motor electromagnetic performance, to understand motor and electric powertrain efficiency right from the start. This provides a fast, easy workflow at the concept and sizing development stage when design iterations need to be at their most efficient.
- Inclusion of motor efficiency maps – calculate overall energy loss for an electrified driveline, combining electromagnetic and mechanical loss mechanisms.
- VI-grade NVH simulator export – automatically calculate and export accurate electric machine noise and vibration predictions from Romax Evolve for use in the VI-grade NVH simulator.
- Electric machine NVH workflow enhancements – including new visualisation tools, and better handling for skewed and eccentric rotors.
- Show velocity on housing in Acoustic Analysis – to see the local structural deformations at the same time as the acoustic results and use this to interpret the source of any directional noise.
- FE speed improvements – for a significant decrease in model preparation and solve times.
- Hybrid bearings – with steel rings and ceramic rolling elements.
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