Bidirectional and regenerative energy devices both source
and sink power and energy. Correspondingly, a solution that can both source and
sink power and energy is needed for properly testing them. In the past here on
“Watt’s up?” we have talked about what two and four quadrant operation is in our
posting “What is bipolar four quadrant power? (Click here to review). We have
also talked about cross over behavior between sourcing and sinking current with
a DC source that will operate in two quadrants in a two-part posting “Power supply current source-to-sink crossover
characteristics” (Click here to review pt. 1) and (Click here to review pt. 2).
These give useful insights about the nature of multi-quadrant solutions for
bi-directional test applications.
Figure 1: The four operating quadrants
Bidirectional and regenerative energy devices that are
used in many applications, such as satellite power systems, alternative energy,
automotive, and many other areas, operate at kilowatt and higher power levels.
These higher power levels have a significant impact on solutions and approaches
taken to address their testing. Also, the
nature of these bidirectional and regenerative energy devices are not all the
same. This also has an impact in that the capabilities of the test solutions
need to be different to address these different types of devices.
In my upcoming webinar on June 18th, titled “Conquering
the High Power Source/Sink Test Challenge” I will be exploring the test needs
of key bidirectional and regenerative energy devices and then go into the
details of various test solutions and approaches for sourcing and sinking power
and energy, along with their associated advantages and disadvantages. This is
just a couple of weeks away. So if you are involved in this kind of work and are interested, or would just like to learn more, you can register online at the following (click here). In case you cannot join the live event you
will still be able to register and listen to seminar afterward instead, as it
will be recorded. I hope you can join in!
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