Using two port network parameters for equipment specification to ensure stability and limit power ripple in DC power systems

Analysis methods for DC power interfaces using techniques built around the Nyquist stability criteria have previously been utilized to create system level specifications to ensure the stability of interconnected systems. This paper extends these concepts to not just ensure stability, but to also ens...

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Bibliographic Details
Main Authors: Knauff, Michael, Plesnick, Shawn, Berardino, Jonathan, Spivey, Nathan
Format: Conference Proceeding
Language:English
Subjects:
Admittance
constant power load (CPL)
impedance
Mathematical model
Ports (Computers)
Power electronics
power ripple
Power system stability
resonance
stability
Stability criteria
subsystem interaction
Thermal stability
two-port networks
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Summary:Analysis methods for DC power interfaces using techniques built around the Nyquist stability criteria have previously been utilized to create system level specifications to ensure the stability of interconnected systems. This paper extends these concepts to not just ensure stability, but to also ensure a guaranteed maximum level of voltage and current perturbation within the system. The technique relies on representation of the subsystems as two-port networks using a definition of two-port networks modified slightly from the conventional understanding. This paper discusses the modified two-port definition, how to combine these networks and use them to calculate ripple at an interface, and how these relationships can be used to form system specification. An example is also presented to illustrate how system specifications may be developed.
ISSN:1558-3899
DOI:10.1109/MWSCAS.2017.8053190