Evaluation Engineeering - 10

REGENERATIVE POWER SUPPLIES & SOURCES

van Eijkelenburg, PPST Solutions:
"Capabilities and features of regenerative AC source and DC power supplies are
largely similar to those of conventional,
i.e. unidirectional AC sources and DC
power supplies, with the main exceptions
being the requirement for special operating modes related to PV inverter testing.
This testing includes LVRT and IEC test
modes for AC sources and special modes
related to battery charge/discharge profile
programming and SoC monitoring functions on DC source/sink DC supplies."

between source and sink mode, which
relates to a seamless change from source
to load mode allows complex voltage patterns to be modeled."

Turner, Elektro-Automatik: "High-speed
voltage and current slew rates. Energy
storage devices like batteries or fuel cells'
dynamic response to load changes is in
the µsec (micro) so to accurately test or
simulate the dynamic profile the supply
should offer high speed changes in power. Zero cross-over transition deadtime

Hsu, AC Power Corp.: "For the regenerative AC grid simulator, there are increasing requirements on the UL1741 SA and
fault ride through testing."

10

EVALUATION ENGINEERING SEPTEMBER 2019

Harvey-Goodman, Keysight: "As power supplies are going higher and higher in power,
the size of the solution also grows. Density
of test instruments is becoming more and
more important. Customers are asking for
compact, high-power regenerative power
supplies to handle high-power requirements
and to aid in shrinking rack space."

Now on the market
Here's what vendors shared as newer
solutions or accessories they've recently

Sponsored by

introduced in the area of regenerative
power supplies & sources, and their key
features.
Drodt, Chroma: "Chroma has recently
launched the 61800-100, which is a 105kVA
regenerative grid simulator with versatile
functions such as regenerative AC loading, XHV high voltage up to 900VLN, and
high frequency options. The parallel capability of 61800-100 allows output power
rating up to 1MVA based on customization. The 61800-100 105kVA regenerative
grid simulator is applicable for micro-grid,
PV inverter, PCS/ESS, UPS, EVSE, and
DC quick charger test applications. To
complement their regenerative grid simulators, Chroma has introduced its new
line of bidirectional DC power sources.
Designed specifically for bidirectional
applications, the Chroma 62000D series
provides 5kW, 10kW, and 15kW at 100V
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Evaluation Engineeering

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