Yu, Ruiyang, Pong, Man-Hay, Ling, Wing-Kuen et al and Lam, James
(2012)
Two-stage optimization method for efficient power
converter design including light load operation.
IEEE Transactions on Power Electronics, 27
(3).
pp. 1327-1337.
ISSN 0885-8993
Full content URL: http://dx.doi.org/10.1109/TPEL.2011.2114676
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| Item Type: | Article |
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| Item Status: | Live Archive |
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Abstract
Power converter efficiency is always a hot topic for switch mode power supplies. Nowadays, high efficiency is required over a wide load range, e.g., 20%, 50% and 100% load. Computer-aided design optimization is developed in this research work, to optimize off-line power converter efficiency from light load to full load. A two-stage optimization method to optimize power converter
efficiency from light load to full load is proposed. The optimization procedure first breaks the converter design variables into many switching frequency loops. In each fixed switching frequency loop, the optimal designs for 20%, 50% and 100% load are derived separately in the first stage, and an objective function using the optimization results in the first stage is formed in the second stage to consider optimizing efficiency at 20%, 50% and 100% load. Component efficiency models are also established to serve as the objective functions of optimizations. Prototypes 400V to 12V/25A 300W two-FET forward converters
are built to verify the optimization results.
| Additional Information: | Power converter efficiency is always a hot topic for switch mode power supplies. Nowadays, high efficiency is required over a wide load range, e.g., 20%, 50% and 100% load. Computer-aided design optimization is developed in this research work, to optimize off-line power converter efficiency from light load to full load. A two-stage optimization method to optimize power converter
efficiency from light load to full load is proposed. The optimization procedure first breaks the converter design variables into many switching frequency loops. In each fixed switching frequency loop, the optimal designs for 20%, 50% and 100% load are derived separately in the first stage, and an objective function using the optimization results in the first stage is formed in the second stage to consider optimizing efficiency at 20%, 50% and 100% load. Component efficiency models are also established to serve as the objective functions of optimizations. Prototypes 400V to 12V/25A 300W two-FET forward converters
are built to verify the optimization results. |
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| Keywords: | light load, power electronics, optimization |
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| Subjects: | H Engineering > H610 Electronic Engineering |
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| Divisions: | College of Science > School of Engineering |
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| ID Code: | 3998 |
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| Deposited On: | 13 Feb 2011 15:37 |
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