Research Focus

Systems, methods and processes in the development, design and validation of electric drive systems and their subsystems, taking into account the interactions in the overall system and the interactions of the system with the environment.

• Development & validation environments for electric traction motors, energy storage systems, thermal and energy management, and electric drive systems
• Operation and shifting strategies for electrified drive systems
• Modeling & simulation in different domains
• Identification of dynamic phenomena and their causes in the vehicle
• NVH (complete vehicle and components)
• Comfort objectification and evaluation methods
• Vehicle acoustics and sounddesign
• Use-case-based validation methods for components up to multimodal mobility concepts
• Energy-efficient driving and operating strategies

Service Offer

We are your partner for problems requiring development and validation of drive systems and their operation strategies:

• Complete drive train simulation for product validation in early periods of the development process
• Analysis and optimisation of drivetrain components regarding customer relevant aspects
  • System efficiency
  • Thermal behavior
  • Determination of DMF isolation behaviour
  • Virtual and mixed physical-virtual investigations of the transmission gear rattle sensitivity
  • Torsional and structural vibration
  • NVH behaviour
• Identification of potentials of drivetrain architectures and topologies taking the customer requirements into account
• Development of customer specific validation environments and needs-based products
• Practical, theoretical and experimental examinations at our facilities or in your company with mobile measuring technology (e. g. 3D laser scanning vibrometry)
• Acoustic measurements inside and outside the vehicle (e. g. dummy head measurements, simulated passing)
• Analysis and optimisation of operating strategies

Equipment

• eDriL - eDrive-in-the-Loop test bench (further information is available)
  3-motor test bench with battery simulator and a highly dynamic drive machine as well as two wheel machines to investigate conventional and (partly-) electrified drivetrain concepts in combination with a real time simulation of connected systems.
   
• Mini-HiL 
  Model test bench for technological development of new drive system test benches and concepts.
   
• Powertrain in the loop test bench - PLP (further information is available)
  Investigation of the whole drive system with the possibility to simulate the connected systems in real time.
   
• Power Pack test bench - PPP (further information is available)
  2-motor test bench with two dynamic synchronous machines for the physical integration of drivetrain components into a real time simulation of the virtual connected systems or for component tests
   
• Multi Component Test Bench - MCP (further information is available)
  The test bench offers a very high degree of modularity, allowing a large number of arrangements of motors and test specimens.
   
• Flexible usable shifting robot and automatic coupling actuation for the automation of gear shifting and coupling processes.
   
• NVH Equipment
  Acoustic roller test bench: semi-open space (lower cut-off frequency of 63Hz)
  Measurement Equipment: 3D-Laser-Scanning-Vibrometer (PSV 3D) for contactless and non-reactive detection of 3-dimensional vibrations of surfaces, 3D sound intensity probe (LMS SoundBrush), Artificial head, uni and triax accelerometers, free-field microphones, 40-channel front-end 

Theses

Current theses of the research group can be found here.