BOOST CONTROL APPARATUS

摘要

A boost control apparatus is provided with a current value change amount detecting device configured to detect a change amount of output current that flows through the reactor in a first predetermined period during one-side element control for driving only one of a first switching element and a second switching element. A determining device is provided that is configured to determine that the output current is near zero if the change amount is less than a predetermined threshold value. A controlling device is also provided that is configured (i) to perform first duty control by a first control parameter if the output current is not near zero, and (ii) to perform second duty control by a second control parameter, which is different from the first control parameter, if the output current is near zero.

主权项

1. A boost control apparatus that can realize one-side element control for driving only one of a first switching element and a second switching element, each of which is connected to a reactor in series, said boost control apparatus comprising;
a current value change amount detecting device configured to detect a change amount of output current that flows through the reactor in a first predetermined period during the one-side element control; a determining device configured to determine that the output current is near zero if the change amount is less than a predetermined threshold value; and a controlling device configured (i) to perform first duty control by a first control parameter if it is not determined that the output current is near zero, and (ii) to perform second duty control by a second control parameter, which is different from the first control parameter, if it is determined that the output current is near zero, wherein the first control parameter and the second control parameter include feed-forward terms that are different from each other, and a duty ratio corresponding to the output current in the second duty control is set to be greater than a duty ratio in the first duty control due to the different feed-forward terms.