Method and apparatus for automatically equalizing bus bar voltages of power factor correction PFC circuit
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United States of America Patent
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Aug 22, 2017
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app pub date -
Jul 29, 2013
filing date -
Jul 29, 2013
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Abstract
An automatic equalization method and apparatus for bus bar voltages of a Power Factor Correction (PFC) circuit. The method includes calculating a difference in voltages of a positive bus bar and a negative bus bar, and increasing the rotation speed of a fan in the PFC circuit according to the difference in voltages of the positive bus bar and the negative bus bar until the voltages of the positive and negative bus bars are equalized. The apparatus includes a voltage difference module configured to calculate a difference in voltages of a positive bus bar and a negative bus bar, and a rotation speed control module configured to increase a rotation speed of a fan in the PFC circuit according to the difference in voltages of the positive bus bar and the negative bus bar, until the voltages of the positive and negative bus bars are equalized.
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