Zero Average Surface Controlled Boost-Flyback Converter.
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| Title: | Zero Average Surface Controlled Boost-Flyback Converter. |
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| Authors: | Muñoz, Juan-Guillermo1 (AUTHOR) juanmunozc@itm.edu.co, Angulo, Fabiola2 (AUTHOR) fangulog@unal.edu.co, Angulo-Garcia, David3 (AUTHOR) dangulog@unicartagena.edu.co |
| Source: | Energies (19961073). Jan2021, Vol. 14 Issue 1, p57-57. 1p. |
| Subject Terms: | *Linear statistical models, *Arithmetic mean |
| Abstract: | The boost-flyback converter is a DC-DC step-up power converter with a wide range of technological applications. In this paper, we analyze the boost-flyback dynamics when controlled via a modified Zero-Average-Dynamics control technique, hereby named Zero-Average-Surface (ZAS). While using the ZAS strategy, it is possible to calculate the duty cycle at each PWM cycle that guarantees a desired stable period-1 solution, by forcing the system to evolve in such way that a function that is constructed with strategical combination of the states over the PWM period has a zero average. We show, by means of bifurcation diagrams, that the period-1 orbit coexists with a stable period-2 orbit with a saturated duty cycle. While using linear stability analysis, we demonstrate that the period-1 orbit is stable over a wide range of parameters and it loses stability at high gains and low loads via a period doubling bifurcation. Finally, we show that, under the right choice of parameters, the period-1 orbit controller with ZAS strategy satisfactorily rejects a wide range of disturbances. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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