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Measurement Technology for the Analysis of Electrified Engines
In order to further optimize efficiency and driving comfort, automobile manufacturers are using integrated starter generators (ISG) in mild hybrid vehicles. Fast current and voltage measurements are crucial for the optimal application of this technology. CSM offers the suitable measurement technology to perform measurements with high data rate and also in mobile testing.
- vMeasure
Real time power analysis - LEM Sensor Package
Measurement of the currents between back-up fuse and ISG - AD4 Typ IG1000
Acquisition of measurement data from the LEM Sensor Package - ISG
Integrated starter generator. Supports the combustion engine - 48 V vehicle electrical system
Currents up to 300 A, with higher peaks - XCP-Gateway
Synchronous acquisition of measurement data and conversion to the XCP-on-Ethernet standard
Background
In mild hybrid vehicles, powerful starter generators are used between the combustion engine and the transmission, taking over the functions of the classic starter and alternator. They are capable of accelerating the combustion engine as well as feeding electrical energy recovered via recuperation back into the vehicle battery. Especially during the starting process, currents must be measured at the input for the optimal design of the ISG.
Measurement task
Current measurement for optimizing the integrated starter generator.
Challenge
Currents of up to 300 A flow in the 48 V vehicle electrical system, which can be much higher for a short time during starting. These peaks also have to be recorded with a high resolution, which means that the measurement technology used must above all allow high data rates and installation for mobile measurements.
The CSM Measurement Solution
- A LEM sensor package is used on the lines between the 48 Volt battery and the ISG inverter, which offers a measurement range of ±500 A and a bandwidth of up to 200 kHz. This means that even the current peaks that occur can be acquired with high resolution.
- A measurement module AD4 MM type IG1000 acquires the data of the LEM sensor package.
- The protocol converter XCP-Gateway converts the data into the common XCP-on-Ethernet protocoll and serves as an interface to the data acquisition software. In this case vMeasure from Vector Informatik is used.
Benefits
With the high sampling rate, the joint solution of CSM measurement modules and Vector software allows a precise analysis of the current peaks that occur and of the power. Vector CANape makes it easy to integrate additional measurement data from ECUs, for example, into the measurement.
More Information
Further Information
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CSM Xplained: Testing of fuel cell drives on test benches and in road testing
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CSM Xplained: Maintenance of HV measurement technology – calibration and insulation-test
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CSM Xplained: The Vector CSM E-Mobility Measurement System
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CSM Xplained: Voltage measurement in e-mobility
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CSM Xplained: Current measurement in e-mobility
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CSM Xplained: Autonomous power measurement in road tests and on test benches
Featured Products
Related Hardware
XCP-Gateway
The protocol converter for EtherCAT® and CAN to XCP-on-Ethernet
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.
LEM Sensor Packages
Fast and synchronous current measurement
Hall-effect-based measurement of highly dynamic currents under harsh environmental conditions: the LEM-sensor packages are optimized for connection to our AD4 ECAT modules.
The Vector CSM E-Mobility Measurement System
The measurement system for the development of electric mobility
Related Software
vMeasure
Reliably Solving Complex Measurement Tasks
vMeasure, developed by Vector Informatik, is an easy-to-use software tool for the acquisition and analysis of measurement data that can be used in combination with all CAN- and EtherCAT®-based CSM measurement modules. CSMconfig was integrated directly to ensure swift configuration.
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.
