In addition to changes in current, voltage and power measurements, electric powertrains also bring new challenges for acoustics: The HV electrical system and its assemblies, new materials and the elimination of masking noise sources require a holistic view of acoustics and performance parameters. This application example shows how a harmonized measurement system can be used to acquire and analyze the necessary measured values.
Engineering and testing of electric powertrains are subject to new requirements. New components, technologies and materials also lead to new acoustic and vibration-related issues.
The development of new, high-performance electric vehicles requires innovative, holistic engineering and testing. For the development, a measurement system is needed that provides both e-mobility analyses and NVH analyses.
Acquisition of acoustic signals and current, voltage as well as power for a holistic analysis of the electric powertrain.
For a holistic analysis and targeted optimization of the electric powertrain, signals for NVH analyses and measured values for performance analyses must be acquired synchronously and bundled in an analysis software.
The synchronous acquisition of all required values saves valuable time, as no time-consuming manual post-processing of the data is necessary. This requires a measurement system that can process the large amount of raw data in real time.
The measurement technology used must be compact and robust so that it can be installed directly in the vehicle, close to the measurement point. This means that the same measurement technology can be used on the test bench and in the road test, and that the test results can be compared. In addition, HV safety for systems and users must be ensured.
With a harmonized measurement system consisting of hardware and software from Müller-BBM VibroAkustik Systeme, which is supplemented by hardware from CSM, all necessary measured values can be acquired synchronously and analyzed in real time.
Due to the simple networking of the data streams, a wide variety of test tasks can be comprehensively solved with one measurement system. Due to the compact measurement technology, acoustic and performance-related phenomena can be validated in the vehicle.
The high data rates and ensuring the synchronicity of all connected measurement modules allows the analysis in real time.
The HV Breakout Modules (BM) Type 1.2 have been specially designed for safe and precise single-phase measurement in separated HV+ and HV- power cables. Inner conductor current and voltage are measured directly and the instantaneous power is calculated in the module.
XCP-Gateway is the interface between the data acquisition software (e. g. vMeasure, CANape®, INCA®, Vision® ...) and the EtherCAT® measurement modules from CSM. It includes an EtherCAT® master and an XCP-on-Ethernet slave.
The HV Breakout Modules (BM) Type 3.3 have been specially designed for safe and precise three-phase measurement in HV power cables. The inner conductor currents and outer conductor voltages are directly acquired and output 100% synchronously and phase-synchronously via XCP-on-Ethernet.
Safe temperature measurements with thermocouples on high-voltage components: the high-voltage-safe temperature measurement modules are specifically designed for the reliable acquisition of temperatures in electric and hybrid vehicles.
Swift configuration of measurement chains: CSMconfig is the reliable configuration software for all CAN and EtherCAT® based measurement modules from CSM. The clearly arranged and easy-to-use user interface allows an easy setting of all measurement parameters. This helps speeding up the measurement setup considerably.