EMTP Based Stability Analysis of Space Station Electric Power System in a Test Bed Environment 929298

The Space Station Freedom Electric Power System (EPS) will convert solar energy into electric energy and distribute the same using an ‘all dc’, Power Management and Distribution (PMAD) System. Power conditioning devices (dc to dc converters) are needed to interconnect parts of this system operating at different nominal voltage levels. Operation of such devices could generate under damped oscillations (instability) under certain conditions. Criteria for instability are examined and verified for a single device. Suggested extension of the criteria to a system operation is examined by using the EMTP model of the PMAD DC test bed. Wherever possible, data from the test bed is compared with the modeling results.


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