| Summary: | 碩士 === 國立雲林科技大學 === 電機工程系碩士班 === 92 === Analysis and design of current-doubler-rectifier converters with integrated magnetics are proposed in this thesis. Comparison among four different structures with current-mode control is completed, and a common small-signal model that can be used to predict the open loop performance is also established for the four structures.
At present, a modern microprocessor needs enough and stable power. Thus, it needs the parallel connection of power modules. Because stability and dynamic performance of paralleled modules are very important, the small-signal model of the parallel modules must be derived. Current-mode control and voltage-mode control are used for paralleled models, and the two methods can be compared with the prediction of their control loops and related feedback compensation designs. The purposes of controlling the output current distribution and achieving the stability of output voltage based on current-sharing circuits must be achieved. Therefore, a modified master-slave control strategy that can be suitable for all kinds of paralleling systems is proposed here. There are many advantages in using this strategy, such as low-cost and flexible design. Action-analysis of structure and small-signal modeling are particularly described. A system control model is provided to the designers about how to design the control performance. Finally, experimental results and prediction of theory are demonstrated to verify each other.
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