Power measurement and the analysis of power parameters (e.g. active power, apparent power, blind power) are important steps in the development of powertrain components. These examples show how such measurements are performed.
The development of electric race cars requires extensive current, voltage and power measurements on the individual components in the electric powertrain in order to be able to design the power electronics. In addition, the overall system must also be analyzed in order to optimize efficiency and comply with regulations. This example shows how the necessary measured variables are aquired on the powertrain test bench and how power analyzations are executed in real time.
In the European Union, consumption values for new passenger cars and light commercial vehicles must be measured for type approval according to the WLTP (Worldwide Harmonized Light-Duty Vehicles Test Procedure). This also applies to electric vehicles (battery electric vehicles and hybrid electric vehicles), for which the electric range is also determined. This example shows how the electrical energy consumed and the range per charge can be determined according to the WLTP.
Read more: WLTP Power Measurement of Electric and Hybrid Vehicles »
Electric vehicles have two, three or even four electric motors in their powertrain. The interaction of the inverters and electric motors is tested in the early development phase in order to fine-tune the motor control. For this purpose, extensive performance analyses are carried out on the test bench and in the test vehicle. This example shows how an easy scalable measurement setup can be used to perform the necessary performance analyses in real time.
Read more: Power and efficiency analysis of an electric powertrain »
The optimal design of inverters is necessary for increasing the range per charge and performance of electric vehicles. The inverter is the link between the battery and the electric motor and plays an important part in the electric powertrain. This application example shows how power and efficiency calculations are performed on the inverter and how the measurement setup can easily be expanded for further measurements.
Read more: Real-time Efficiency Measurement on Inverter and... »
Electric powertrains have to be tested during many development phases. The overall efficiency is an important parameter for further optimization. In this application example, you can learn how the overall efficiency of fully integrated electrical powertrains is calculated in real time.