TY - JOUR
T1 - Analysis of a dc-dc flyback converter variant for thermoelectric generators with partial energy processing
AU - Marroquín-Arreola, Ricardo
AU - Salazar-Pérez, Daniel
AU - Senior, Mario Ponce Silva
AU - De León, Héctor Hernández
AU - Aquí-Tapia, Juan A.
AU - Lezama, Jinmi
AU - Saavedra-Benítez, Yesica I.
AU - Escobar-Gómez, Elías N.
AU - Lozoya-Ponce, Ricardo E.
AU - Mota-Grajales, Rafael
N1 - Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - This paper presents a theoretical analysis of a DC-DC flyback converter variant applied in energy harvesting based on thermoelectric generators. The main contribution of the article is the analysis and obtaining the equations of the behavior of the converter with a rearrangement of the elements of the traditional flyback converter in such a way that the converter only processes part of the energy while the other part is delivered directly to the load. This is achieved by connecting the secondary of the flyback in series with the load, and this assembly, in turn, is placed in parallel with the primary and the voltage source. This configuration means that the topology can only be a boost topology; however, there are benefits such as partial power processing (R2P2) and reduced stress on converter components in both voltage and current; all this leads to increase the efficiency. A Low Frequency Averaging Analysis (LFAA) was used to determine the behavior of the proposed circuit, and a simple equivalent circuit to analyze was obtained. In order to validate the theoretical analysis, a circuit was simulated in Spice and implemented in an 18 W prototype. Experimental results showed that the converter has an efficiency of 92.65%. Moreover, the rearranged flyback processed only 56% of the input power.
AB - This paper presents a theoretical analysis of a DC-DC flyback converter variant applied in energy harvesting based on thermoelectric generators. The main contribution of the article is the analysis and obtaining the equations of the behavior of the converter with a rearrangement of the elements of the traditional flyback converter in such a way that the converter only processes part of the energy while the other part is delivered directly to the load. This is achieved by connecting the secondary of the flyback in series with the load, and this assembly, in turn, is placed in parallel with the primary and the voltage source. This configuration means that the topology can only be a boost topology; however, there are benefits such as partial power processing (R2P2) and reduced stress on converter components in both voltage and current; all this leads to increase the efficiency. A Low Frequency Averaging Analysis (LFAA) was used to determine the behavior of the proposed circuit, and a simple equivalent circuit to analyze was obtained. In order to validate the theoretical analysis, a circuit was simulated in Spice and implemented in an 18 W prototype. Experimental results showed that the converter has an efficiency of 92.65%. Moreover, the rearranged flyback processed only 56% of the input power.
KW - DC-DC flyback converter
KW - Partial energy processing
KW - RP
KW - Thermoelectric generators
UR - http://www.scopus.com/inward/record.url?scp=85102050449&partnerID=8YFLogxK
U2 - 10.3390/electronics10050619
DO - 10.3390/electronics10050619
M3 - Artículo
AN - SCOPUS:85102050449
SN - 2079-9292
VL - 10
SP - 1
EP - 18
JO - Electronics (Switzerland)
JF - Electronics (Switzerland)
IS - 5
M1 - 619
ER -