In e-mobility, particularly in electric vehicles, high-speed electric motors are used in conjunction with corresponding power electronics and a reduction gearbox.
In the development of these future drive systems, E motor test beds play a crucial role in determining efficiency tests, map recordings, dynamic tracking, endurance and thermal testing.
ERNST has been supplying the test bed mechanics for this purpose for many years. This consists of a welded machine frame also called “base structure.”
The vibration decoupling to the building is usually done by means of air springs; the base structure itself has no natural frequency within the rotational speed range.
The shaft train is assembled according to the specific application, with several options available, such as an integrated spindle bearing position or an interlocking torsion bar.
Due to our own design and in-house manufacturing and installation, ERNST is able to deliver complete test bed mechanics as a system supplier.
Drawings
Properties
- Base structures with 1st natural frequency above speed range
- Air spring damping system
- Alignment via pressure elements and grinding plates
- Additional support surfaces
- Mounting and alignment elements
- Customer-specific adaption
- Turnkey solution by ERNST
Options
- Climate application
- Shaft design
- Customer-specific adaption
- B-side support
- Highspeed gearbox
Product examples
E-motor test bed in test cell
Technical data:
- Speed range: up to 20000 rpm
- Torque range: up to 1000 Nm
- Mass: approx. 5.5 t (incl. E-motor)
- Dimensions: approx. 1.8 m x 1.0 m x 1.5 m
- Adaption support surfaces for flange and base assemblies (DUT)
- Shaft connection consisting of K&A Dyno, HBM torque meter, coupling and intermediate bearing
E-motor test bed, incl. intermediate bearing
Technical data:
- Highspeed gearbox with 2 outputs
- Speed range: up to 11000 rpm / 25000 rpm
- Torque range: up to 1500 Nm / 500 Nm
- Mass: approx. 7.5 t (incl. E-motor)
- Dimensions: approx. 2.3 m x 1.0 m x 1.6 m
- Adaption support surfaces for flange and base assemblies (DUT)
- Shaft connection consisting of Oswald dyno, coupling, intermediate bearing, HBM torque meter, couplings and intermediate bearing
- Climate application
- B-side support
E-motor test bed, incl. climate application
Technical data:
- Speed range: up to 16000 rpm
- Torque range: up to 900 Nm
- Mass: approx. 5.0 t (incl. E-motor)
- Dimensions: approx. 1.8 m x 1.0 m x 1.5 m
- Adaption support surfaces for flange and base assemblies (DUT)
- Shaft connection consisting of Oswald dyno and HBM torque meter
- Climate application
E-motor test bed, incl. highspeed gearbox
Technical data:
- Speed range: up to 20000 rpm
- Torque range: up to 1000 Nm
- Highspeed gearbox (detachable): up to 30,000 1/min / 500 Nm
- Mass: approx. 6.5 t (incl. E-motor)
- Dimensions: approx. 2.0 m x 1.0 m x 1.5 m
- Adaption support surfaces for flange and base assemblies (DUT)
- Shaft connection consisting of K&A dyno, HBM torque meter, torsion bar and highspeed gearbox
- Climate application
E-motor test bed, incl. protection box
Technical data:
- Speed range: up to 12000 rpm
- Torque range: up to 200 Nm
- Mass: approx. 2.2 t (incl. E-motor)
- Dimensions: approx. 1.8 m x 1.0 m x 1.4 m
- Adaption support surfaces for flange and base assemblies (DUT)
- Shaft connection consisting of Oswald dyno, clamping element, HBM torque meter and high-speed shaft
- Protection box
E motor test beds in use
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