A measurement system for electric car charging stations utilising a FPGA board for flexibility in configuration

Ivan Stoychev, Jan-Christoph Tebbe, Jürgen Oehm

2016 IEEE International Symposium on Circuits and Systems (ISCAS), Montréal, QC, Canada, 2016, pp. 630-633


Abstract

In this paper we present a prototype of a measurement system for an electric car charging station, which provides much more than only battery charging. In addition to the core tasks, namely to measure the amount of transferred energy, and to organise the billing with the provider, a charging station must satisfy numerous other requirements. These include e.g. several safety aspects like the communication with the car, detection of electrical faults, and an ensuring for secure payments. The digital core units of the electric car charging station prototype have been implemented on an FPGA board. The FPGA platform was chosen in order to keep the prototype development process as flexible as possible. This paper will focus on such aspects, where in particular flexibility during the development phase was required.

tags: charging station, current sensor, electric cars, electrical safety, FPGA, post processing, programmable acquisition, secure billing, transferred energy, voltage sensor