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Ensuring interoperability between different electric vehicles (EVs) and charging stations requires testing the EV onboard chargers (OBCs) against different combinations of AC input voltages and frequency parameters from wall chargers. The impact of events related to power draw in different environmental operating conditions and under different stresses must be well understood to properly evaluate the OBC.
A reliable AC source is required to accurately control the voltage and frequency waveforms applied to the OBC under test to analyze its response. Output voltage and frequency programming and measurement are performed using a 1-phase / 3-phase AC source with DC output capability. A built-in power line disturbance function simulates AC power input conditions. To identify potential issues, a sequencer and waveform generator generates voltage and frequency transients that can occur under normal operation, emergency power operation, power transfers, or stress tests.
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