The inverter is an intelligent mini-computer in electrified and electric vehicles. Together with battery and e-motor, they form the basis for the final driving experience. But, before all these components are tested together, every single one should be developed and validated on a dedicated test system. The frontloading of tests leads to shortened integration tests and therefore shorter time to market. The inverter controls and monitors all driving conditions and the vehicle’s safety-critical functionalities. Power electronics, in combination with a high level of signal complexity, require an appropriate test methodology and the use of adequate testing equipment.
The AVL Inverter TS™ enables independent testing of the inverter while optimizing the integration with all other components in the electrified powertrain. The test system is based on e-motor emulation technology with real-time simulation. This leads to highly accurate results when testing the inverter with required battery voltage and e-motor current. For such a testing setup, exact copies of the e-motor and the battery are required.
Within the AVL Inverter TS™, the e-motor is replaced very accurately with the Power Amplifier Cabinet (PAC) and the Signal Processing Cabinet (SPC). The UUT DC Supply Cabinet (USC) represents a digital copy of the battery. As a result, an efficient and flexible test equipment for the testing of inverters is available, which – in contrast to an active load cabinet – emulates with highest accuracy the real physics of an e-motor directly at the terminals.
The emulated e-motor must behave exactly like a real e-motor. Software tools are developed to ensure the optimal use of the test systems over their entire performance range and to render our specialist’s knowledge available for customers over a broad scope and without limitation. They make it possible to configure a machine model correctly and quickly, without the need for deep expert knowledge.
It is important to us to provide our customers not just with individual parts, but with a state-of-the-art, complete test system that is based on years of application know-how and thus enables our customers to use a highly efficient test methodology.”
– Dr. Tobias Schelter, Managing Director, AVL SET GmbH
AVL Inverter Testing Solutions – Brochure
AVL Inverter TS™ – Solution Sheet
Full test coverage for traction inverters makes the difference in power electronics testing.
Parametrization of an Inverter Test System – Whitepaper
Fast and reliable parametrization of an inverter test system with the e-motor’s type plate data.
Customer Story – “Inverter Testing at Polestar”
Highest replication precision is key. All relevant driving characteristics can be optimized to an depth and speed.
AVL’s automation platform PUMA 2™ represents the brains behind many different testbed applications.
AVL PUMA 2™ Inverter features an intuitive user interface displaying all important values immediately. You can easily integrate the automation software into existing AVL test fields, allowing data to be shared across different testbed types and configurations. Our complete integrated solution covers all inverter testing requirements that arise from automation, limit monitoring and measurement, leading to the most efficient inverter testbed operation.
AVL PUMA 2™ Inverter is a comprehensive automation system for inverter testing, offering everything you need in one place
The AVL Active Load Cabinet (ALC) is an active power test device which can be used to perform high-voltage functional tests of inverters (UUT). Thanks to its open communication interfaces, the ALC can be easily integrated into a lab or test setup.
The AVL X-ion™ PA2 power analyzer is a modular data acquisition platform that is optimized for electric and hybrid applications.
The AVL Customer Services organization consists of more than 700 service- and application engineers worldwide, operating from more than 50 locations. Our global footprint is your local benefit.
AVL’s comprehensive worldwide network of experts allows best customer vicinity, ensuring consistent and connecting testing fields globally. Wherever your R&D challenges take you, we are always close at hand, ready to provide the service you need.
> 70
years of experience
> 5,000
employees worldwide for testing solutions
> 30
countries covered by the global network
> 7,000
testbeds installed worldwide
> 80
turnkey projects
Modern tools are improving the historical methods used to develop and validate traction inverters. What was once a time-consuming and expensive testing process on various dynos, vehicles, and passive loads has been shortened and improved with new tools and methods.
In this free webinar, our experts Benjamin Kanya and Christian Mayr will show you the benefits of frontloading inverter calibration. They will take a look at the entire calibration process, from basic calibration to in-vehicle validation.
In this webinar a game-changing test environment is presented where the battery and e-motor are replaced with emulators, which are controlled from a powerful automation system.
