Dear Friends,

Today’s update is clearly aimed at inverter test systems and the following two use cases: the handling of e-motor manufacturing tolerances and the testing of inverter failure scenarios. Learn more about inverter development with a dedicated test system and all the advantages that come with it!

Find all my magazines from 2006 on in our free archive on bodospower.com. There is no better way to communicate. We all share one world. As a publisher I serve the world: one magazine, on time, every time.

Best regards,
Bodo Arlt

Power-HiL: Inverter testing under real conditions and highly efficient load

The inverter is the heart and brain of an electric drivetrain. Therefore, dedicated test systems for efficient development and validation are key to get reliable and reproducible test results. The AVL Inverter TS™ consists basically of an e-motor emulator and a battery emulator – so there is no need to have the real e-motor and the real battery available to start the testing process.

So, what is e-motor emulation technology all about and what are potential use cases for an inverter test system?

Use Case 1: Handling of e-motor manufacturing tolerances

How can manufacturing tolerances of the e-motor be handled by the inverter?

In the manufacturing process of e-motors, there is always a tolerance range which is often up to about ±10 % of the nominal value. There are different possibilities to handle these manufacturing tolerances. The most efficient way is to optimize the inverter’s tolerance handling by using the AVL Inverter TS. Find out more!

Use Case 2: Testing inverter failure handling

How can you evaluate the inverter’s failure response?

In general, the testing of inverter failure reactions on a rotating testbed with an e-motor is either very limited or dangerous.

Read more about how the Failure Emulation Cabinet in our Inverter TS can emulate failure scenarios like cable breaks or short circuits – in a simple, safe and reproducible way.