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Abstract
The electric vehicle market is rapidly growing due to its environmental friendliness and governmental support. As electric vehicles are powered by electricity, the interoperability between the vehicles and the chargers made by multiple vendors is crucial for the success of the technology. Relevant standards are being published, but the methods for conformance testing need to be developed. In this paper, we present our conformance test system for the electric vehicle charger in accordance with the standards ISO/IEC 15118, IEC 61851 and IEC 61850-90-8. Our test system leverages the TTCN-3 framework for its flexibility and productivity. We evaluate the test system by lab tests with two reference chargers that we built. We also present the test results in two international testival events for the ISO/IEC 15118 interoperability. We confirmed that our test system is robust, efficient and practical.
Highlights
The Electric Vehicle (EV) is gaining popularity as an alternative transportation means due to its environmental friendliness
The EV charger passed all of the test cases, including negative tests
We manually examined all of the communication between the EV and the EVSE and the EVSE and the operator, checked the timings of message deliveries and concluded that the test system properly tested the target
Summary
The Electric Vehicle (EV) is gaining popularity as an alternative transportation means due to its environmental friendliness. Different EV, EVSE and back-end system manufacturers will release their products to the market, but these will not necessarily be compatible with each other. To address this problem, standard bodies have been working on relevant standards [2], such as ISO/IEC 15118 [3,4,5], IEC 61851 [6,7] and IEC 61850-90-8 [8], as well as CHAdeMO (CHArge de MOve) [9] and DIN The EV makes a physical connection to the EVSE using a charging cable [23] They communicate through two standards: IEC 61851 for low-level communication and ISO/IEC 15118 for high-level communication.
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