Abstract
The present work describes a monitoring system of a bank of supercapacitors (SCB) based on the use of CAN BUS protocol as the data transmission mode. A boost converter with 12.5 V at its output is included to stabilize the voltage in the supercapacitors. This paper provide a basis for the design of a diagnostic systems which aim to monitor the storage, to extend the supercapacitors life cycle and to detect the voltage variations outside the range of operation that could damage the bank. A circuit is implemented in a way that it allows to balance the voltages of the SCB and to avoid a variation of voltage that could cause the destruction of the components. The monitoring system will receive the voltage data of the SCB by means of the CAN bus protocol and show these voltages through a graphical interface in an intelligent screen, the monitoring will allow to detect an over voltage and thus avoid premature damage in these elements.
Highlights
The use of monitoring and diagnostic systems for different applications has been important because they provide the user with an interface to visualize the operation and to detect possible errors
It is important to consider the qualities of them elements as the DC-DC converters that allow from a constant DC source to control the DC voltage at the output of the converter
The power supplied by the DC/DC converter and the current needed to charge the SCB, did possible the transmission of the data through the CAN network as well as the interconnection with the graphical interface
Summary
The use of monitoring and diagnostic systems for different applications has been important because they provide the user with an interface to visualize the operation and to detect possible errors. It is important to consider the qualities of them elements as the DC-DC converters that allow from a constant DC source to control the DC voltage at the output of the converter These converters have multiple applications: power sources in computers, distributed power systems, power systems in electric vehicles, etc., [1] – [28]. There are multiple applications of supercapacitors (SC) in the aerospace, automotive industry, traction systems, etc. It is important to consider that the voltage in a serial to parallel connection of these devices will not be distributed and can lead to an asymmetric voltage between them To avoid this problem, different topologies of voltage balance circuits connected to the SC network are implemented to allow their correct distribution of voltage in each supercapacitor. The characteristics of the CAN bus have placed it as a protocol of the automotive and the automation industry
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