FREEDM-Circle Diagram of system Constraints
![](https://erc-assoc.org/sites/default/files/styles/page_width/public/FREEDM3-R-Model_NH.jpg?itok=toUpbQuH)
Physical states from the dynamic-system model establish a circle equation for the overall system power constraint for feasibility, while the power-electronics switching imposes the duty-cycle constraints. Both types of constraints are represented by circles, and the intersections of those two circles provide SST operating points as shown here; in this case the SST rectifier is at P=50kW.
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FREEDM
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