Magnetising inductance of multiple‐output flyback dc–dc convertor for discontinuous‐conduction mode
| Autor: | Marian K. Kazimierczuk, Agasthya Ayachit, Alberto Reatti |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry Flyback converter 020209 energy 020208 electrical & electronic engineering Transistor Flyback transformer Electrical engineering 02 engineering and technology Flyback diode Power Converter Power Supply Magnetising Inductance High Frequency Tranformers Multiple-output two-output dual-output dc-dc convertors discontinuous-conduction mode flyback convertor universal power supply gapped transformer multiple-winding law.invention Inductance law Duty cycle Control theory 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Transformer Voltage |
| Zdroj: | IET Power Electronics. 10:451-461 |
| ISSN: | 1755-4543 |
| DOI: | 10.1049/iet-pel.2016.0390 |
| Popis: | This study presents the following: (i) detailed derivation of the expressions for the maximum value of the magnetising inductance of the ideal and lossy two-output flyback dc–dc convertor operating in discontinuous-conduction mode, (ii) a method to appropriately select the duty cycle for the metal–oxide–semiconductor field-effect transistor based on the rated output dc voltages of the two stages, and (iii) a design approach for a three-winding transformer with a gapped core used in the two-output flyback convertor. The expressions derived and the proposed design technique can be extended to flyback convertors with more than two output stages with equal or unequal load voltages. A universal power supply (ac line adapter) employing a flyback dc–dc convertor with output voltages 15 and 32 V, supplying a rated output current of 0.563 and 0.533 A, and operating at a switching frequency of 85 kHz is designed using the proposed methodology. Simulation and experimental results are presented to validate the theoretical predictions. |
| Databáze: | OpenAIRE |
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