Power converter
AssigneeMitsubishi Electric Corporation
InventorHidetoshi Kitanaka
Life of this patent
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Abstract
A power conversion controller includes: a correction-value calculating unit that calculates a correction value DE2 to correct a voltage value BEFC from a voltage signal BEFC that is obtained by converting the voltage value BEFC detected by a first voltage detector into a digital signal by an A/D converter and from a series-total voltage value EBAT detected by a second voltage detector; a corrected-voltage calculating unit that calculates a voltage signal BEFC1 as a corrected voltage value that is obtained by correcting the voltage value BEFC by the correction value DE2; and a gate controller that controls a power converting unit based on the voltage signal BEFC1.
Claims21
A power converter comprising a power converting unit that is connected to an electric-power storage device to which a plurality of electric-power storage elements are connected and performs electric charge/discharge to and from the electric-power storage device, and a power conversion controller that controls an operation of the power converting unit, wherein
- the power conversion controller includes:
- a correction-value calculating unit that calculates a correction value or a correction coefficient from a first voltage value detected by a first voltage detector that detects a voltage at a connection point between the power converting unit and the electric-power storage device and from a second voltage value detected by a second voltage detector that is incorporated in the electric-power storage device and detects a voltage in a cell unit or a module unit in each of the electric-power storage elements and having higher precision than that of the first voltage value and having a late response;
- and
- a corrected-voltage calculating unit that calculates a corrected voltage value obtained by correcting the first voltage value by the correction value or the correction coefficient,
- a control of the power converting unit is performed based on the corrected voltage value, and
- the power converter has a configuration of performing constant-voltage electric charge to the electric-power storage device.
Dependencies are inferred from the claim text.