- Title
- Dealing with constant power loads in DC-DC power electronic converters using flatness based coordinate transformations
- Creator
- Tomassini, Juan; Junco, Sergio; Donaire, Alejandro
- Relation
- 2020 Institute of Electrical and Electronics Engineers (IEEE) Biennial Congress of Argentina. Proceedings of the 2020 Institute of Electrical and Electronics Engineers (IEEE) Biennial Congress of Argentina (Resistencia, Argentina 01-04 Dec, 2020) p. 1-7
- Publisher Link
- http://dx.doi.org/10.1109/ARGENCON49523.2020.9505505
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2020
- Description
- This work presents a common methodology to the controller design for the dc-dc buck, boost and buck-boost converters feeding a constant power load. Using the flat output of the state space averaged model of each converter a convenient coordinate transformation is applied to obtain a model in the controller canonical form. Then the Passivity Based Control (PBC) technique is applied with a predefined storage function, avoiding the need of solving a partial differential equation system. Constant disturbances in the transformed system are rejected using a PBC controller with dynamic extension, result of particular interest for the boost converter case. As the closed loops are linear, the settling times of their dynamics can be precisely tuned. This helps designing an outer PI controller to drive the capacitor energy error to zero for the buck-boost converter case with the PBC controller, and in the boost and buck-boost cases with the PBC controller plus dynamic extension.
- Subject
- constant power load; DC to DC power electronic converter; flatness; interconnection and damping assignment passivity-based control
- Identifier
- http://hdl.handle.net/1959.13/1467777
- Identifier
- uon:47901
- Identifier
- ISBN:9781728159577
- Language
- eng
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