Optimize your Electrified Powertrain

E-Machine Simulation

Electro-mechanic Coupling Joint

AVL offers e-machine simulation models supporting analysis tasks of hybrid and full electric powertrains during concept and design phase such as component sizing, generating load diagrams, energy control strategy development, model integration into HiL as well as powertrain durability and NVH analysis

The Challenge

System simulation, integration and thermal design

  • Which e-machine type/layout/size is the best fit for my powertrain?

  • How can I evaluate the utilization of the motor/generator mode for different configurations and drive cycles?

  • Can I reuse the vehicle model on E-machine related test systems?

  • How do I optimize the thermal design of components, sub-systems or entire vehicle?

Dynamics, durability and acoustics

  • How can I take the dynamic interaction between connected electric and mechanic system into consideration?

  • Are the e-machine torsional fluctuations causing durability or acoustic issues with the transmission/driveline?

  • How does the controller strategy influence the dynamic behavior of the entire powertrain/driveline?

  • What kind of influence do critical electric consumer network conditions have on the dynamics of my gen-set?

The AVL Solution

AVL CRUISE™ supports the vehicle development focusing on energy consumption and thermal behavior caused by power losses using e-machine models with an integrated inverter. By sharing the same physical fundamental wave e-machine model with AVL EXCITE™, consistency across different model depths and tools is established to optimize resources in the development process.

The flexible multi-body dynamics software AVL EXCITE™ for durability and NVH analysis of conventional and electrified powertrains includes electro-mechanic coupling joints for e-machines using either the same fundamental wave based models as AVL CRUISE™ or more detailed FE-based circuit models. This allows for the consideration of basic dynamic torque as well as high order torque fluctuations of the e-machine influenced by the interaction between the mechanical and electric system.

The AVL FIRE™ multi-physics simulation capabilities support e-machine thermal analysis and optimization. In addition, magneto-static simulations generate input data for the parameterization of the FE-based circuit e-machine model type of AVL EXCITE™.

The Added Value

  • Appropriate e-machine model types for powertrain concept and design analysis

  • Result visualization for clear understanding of energy flow and loss distribution

  • Basic electric network components included (power supply, sensor, controller, inverter)

  • Various e-machine types supported: permanent magnet & electrically excited synchronous machine, induction machine, synchronous reluctance machine

  • Optional consideration of detailed e-machine specific dynamics due to saturation, cogging torque, current ripple