How to Test EV Fast Chargers

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Charging Discovery System
+ Charging Discovery System
Charging Discovery System
+ Charging Discovery System

Testing EV Fast Chargers By Emulating EV Batteries And Communications

Testing DC fast-charging parameters requires sinking very high power to emulate the behavior of an electric vehicle (EV) battery, contributing to high lab overhead costs for electricity and cooling required to dissipate the generated heat. DC fast chargers operate at 1,000 V or beyond, with outputs ranging from 15 kW to 350 kW or higher. EV charge speed depends on the charge rate of the charging station, the maximum power input the EV can handle, and the EV's charging curve. The charging curve tracks how much power it can take over time as it charges.

As new EV models are rolling out each year and DC fast-charging infrastructures are ramping up, engineers need a solution that can emulate an EV battery to test performance and interoperability of the charging station. Testing these high-power systems requires a system which can sink the power offered by the EV charging station, and which supports the communications protocols required to initiate and monitor charging. Software is also necessary to automate DC charging tests using different test standards and parameters.

EV Fast-Charging Test Solution

Testing DC fast-charging stations requires sinking high power loads delivered by the charging station, while emulating and monitoring communications with the charging station. The Keysight Regenerative DC Emulator, paired with the Charging Discovery System, enables you to realistically emulate high-voltage, high-power EV batteries to test high-power DC fast-charging applications. The solution can emulate EV batteries up to 1,500 V and 900 A, and you can use it in parallel to achieve megawatt-scale solutions.
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