An Active Power Decoupling Method for Single Phase DC/AC DAB Converters
| Autor: | Jiang You, Negareh Ghasemi, W. L. Malan, D. Mahinda Vilathgamuwa |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
General Computer Science
Power decoupling Computer science Ripple cycloconverter 02 engineering and technology Inductor law.invention law dual active bridge Frequency grid 0202 electrical engineering electronic engineering information engineering 0501 psychology and cognitive sciences General Materials Science 050107 human factors Cycloconverter business.industry 020208 electrical & electronic engineering 05 social sciences General Engineering Electrical engineering Converters Power (physics) Capacitor Duty cycle lcsh:Electrical engineering. Electronics. Nuclear engineering business quasi-proportional-resonant control lcsh:TK1-9971 |
| Zdroj: | IEEE Access, Vol 7, Pp 12964-12972 (2019) |
| ISSN: | 2169-3536 |
| DOI: | 10.1109/access.2019.2893286 |
| Popis: | The existence of the double grid frequency (100 Hz) ripple current in dc/ac dual active bridge (DAB) power converters can degrade their performance and as such these ripples need to be compensated. An active power decoupling method is proposed in this paper to attenuate the 100-Hz current ripple in single phase dc/ac DAB converters. Compared to other current ripple reduction methods for which additional switches are used, the proposed method does not require any additional switching components thus decreasing the system cost. In the proposed method, the existing switching devices of the primary side full bridge converter and an LLC circuit integrated to form a 100-Hz ripple current reduction circuit, which is controlled by regulating the duty cycle of the primary full bridge converter switching legs. The mathematical analysis and the circuit parameter design methods are proposed. In addition, a current sharing method is proposed to keep the currents of the inductors in the LLC circuit are balanced against any possible circuit parameter deviations. The effectiveness of the developed method is evaluated through the simulation and experimental tests. |
| Databáze: | OpenAIRE |
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