Three-phase utility grid simulator utilizes regenerative power source

Three-phase utility grid simulator utilizes regenerative power source

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By eeNews Europe

The PAS-F system combines utility grid simulation and regenerative bi-directional AC source that is capable of both sourcing and sinking the full current load from the device under test (DUT). The system handles power levels ranging from 45 kVA to 1.6 MVA.

When testing dispersed energy products, such as PV inverters, energy storage systems and wind turbines, the traditional test set up requires a load bank in parallel with the DUT and AC source. The PAS-F system does not require the parallel load. Instead, full DUT current is sunk into the AC source and 92% of the power is regenerated back to the utility grid, saving energy and reducing system-cooling requirements.

The PAS-F system offers fully adjustable output voltages (up to 305 V line-to neutral, 528 V line-to-line) and frequency (40-70 Hz). The system features embedded low-voltage-ride-through (LVRT) test windows to allow for simple programming of compliance routines, including the new 10% LVRT requirements. The DSP-based controller allows for independent phase angle, voltage and phase imbalance control to meet requirements, such as IEEE1547, where multi-phase inverters must be tested on an individual basis and all phases simultaneously. The PAS-F system can also be used as a reference AC source for use in UL1741, IEEE1547, BDEW (Germany) and CEI0-16 (Italy) compliance testing.


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