Analysis and Design of Multicell DCDC Converters Using by Thierry Meynard

By Thierry Meynard

Shows how the recommendations of vectorization and layout mask can be utilized to aid the dressmaker in evaluating diversified designs and making the proper offerings. The publication addresses sequence and parallel multicell conversion at once, and the recommendations could be generalized to explain different topologies.

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Additional info for Analysis and Design of Multicell DCDC Converters Using Vectorized Models

Example text

It should also be noted that although this simulation starts from a balanced state (all currents are zero), the three currents do not reach the same average value. 2 in which a specialized modulator is described. 4. 5. Current waveforms of a three-phase interleaved converter. 3. Series connection block and series multicell converter The same principles of vectorization can be applied to generate a series-connection block that will be convenient to build series-multicell converters. This block must be designed in such a way that no vector of zero or negative length is created in the wire multiplexer, even when n = 1.

If this is done, the state of the system is “frozen” since all duty cycles are equal and the integrators have zeros as inputs, so no imbalance is created even if saturation lasts. In fact, when the system enters saturation, it is not necessarily balanced but the imbalance is memorized in the sampling blocks and it is ready to be used when getting out of saturation. However, if saturation lasts, the memory is progressively cleared and an imbalance will be generated when switching starts again. Therefore, to handle fast saturation, it is required that the sampling blocks be disabled during saturation.

3. Practice 1) Build a vectorized version of this circuit using a series connection block: 54 Analysis and Design of Multicell DC/DC Converters using Vectorized Models 2) Vectorize the control section to match this schematic: 3) Change the number of cells of both the control and the power circuit by a single action and check the different waveforms. : See in the figure the correct syntax to define the width of the multiplexer at the scope input.

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