Wide Frequency Range Impedance Measurement of a Li- ion Prismatic Cell for Power Line Communication Technique

Author(s):  
Arash Pake Talei ◽  
Wolfgang A. Pribyl ◽  
Gunter Hofer
2021 ◽  
Vol 138 (1) ◽  
pp. 3-14
Author(s):  
Arash Pake Talei ◽  
Wolfgang A. Pribyl ◽  
Günter Hofer

AbstractElectric vehicles (EVs) are without a doubt one of the hottest topics of our time because of their advantages over combustion engine vehicles. This has persuaded many developers to try improving EVs so they will be more reliable and cheaper and as a result suitable for a broader range of consumers.In this paper we dive into the proper way of measuring and understanding the impedance of one prismatic cell from 100 kHz up to 1 GHz. Some common measurement mistakes and important points to notice are also explained. The effect of a power bar is shown as well. In order to make sure of the accuracy and the consistency of the measurements, they are compared with finite element simulations as well as with mathematical calculations.Investigations of conducted emissions are also of key importance since it has a direct influence on selecting a suitable frequency range. Accordingly, a thorough lab measurement is conducted to see the distortion harmonics and their influence on the carrier frequency. This knowledge can then be used to implement the power line communication (PLC) method.The PLC technique helps us to reduce the wire harness of a battery pack by using the existing high-voltage lines of the vehicle as the main transmission channel. This leads to cheaper battery packs by reducing the amount of used material for the wire harness and production time as well as assembly complexity.


2018 ◽  
Vol 10 (11) ◽  
pp. 4043 ◽  
Author(s):  
Antonio Ocana-Miguel ◽  
Jose Andres-Diaz ◽  
Manuel Hermoso-Orzáez ◽  
Alfonso Gago-Calderón

Nowadays, control systems for lighting installations are used, among other functionality, to improve energy efficiency and to set different lighting outputs of the luminaires according to punctual requirements. This allows increasing energy efficiency by adapting the installation to environmental needs. Current control systems are mainly oriented to point-2-point architectures, which in most cases, are complex and expensive. As an alternative, we present the viability analysis of a sustainable control architecture for lighting installations to improve those drawbacks. This control system uses a communication technique based on controlled power-on/off sequences in the power line of the luminaires to configure different dimming profile schedules. An implementation for LED equipment with the design of an electronic CPU based on a microcontroller is described along with a study of its configuration capability. In addition, we present the set of results obtained using this system in a real outdoor public lighting installation. Furthermore, an economic amortization study of power line communication (PLC) or radio frequency (RF) control architectures versus the results of this proposal are detailed. The analysis presents the proposal as a simple but more robust and sustainable solution compared to current point-2-point systems used with streetlights: The return on investment (ROI) period is reduced allowing all the basic functionality expected—in—field output light dimming profiles selection.


2019 ◽  
Vol 166 ◽  
pp. 9-17 ◽  
Author(s):  
Sandra Castano-Solis ◽  
Daniel Serrano-Jimenez ◽  
Jesus Fraile-Ardanuy ◽  
Javier Sanz-Feito

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