Power conversion device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsMasayuki ITO, Tomohiko KANEKO
Life of this patent
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Abstract
To provide a power conversion device configured to evenly pass current through phases and to achieve high power conversion efficiency in a wide current range. A power conversion device comprising conversion parts which are coupled in parallel to each other, which are capable of voltage conversion, and each of which includes a coil, wherein the power conversion device comprises M (M is a natural number of 2 or more) sets of conversion sets including the conversion parts of N phases (N is a natural number of 2 or more), and the coils of the conversion parts are capable of magnetic coupling to each other; wherein the power conversion device includes a controller configured to change a driving phase number X of the conversion parts according to a system requirement.
Claims6
A power conversion device comprising conversion parts which are coupled in parallel to each other, which are capable of voltage conversion, and each of which includes a coil,
- wherein the power conversion device comprises M (M is a natural number of 2 or more) sets of conversion sets including the conversion parts of N phases (N is a natural number of 2 or more), and the coils of the conversion parts are capable of magnetic coupling to each other;
- wherein the power conversion device includes a controller configured to change a driving phase number X of the conversion parts according to a system requirement;
- and
- wherein, when the driving phase number X is not a multiple of N (a condition (A)) and when the driving phase number X is represented by a product YZ of the conversion part of Y phase (Y is a natural number of N−1 or less) and Z (Z is a natural number of 2 or more and M or less) sets of the conversion sets (a condition (B)), among the conversion parts of N phases included in each of Z sets of the conversion sets, the controller drives the conversion part of Y phase, and the controller does not drive the conversion parts of all N phases included in each of remaining (M−Z) sets of the conversion sets.
Dependencies are inferred from the claim text.