Method and apparatus for pulse-width modulation of a variable-frequency drive

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United States of America Patent

PATENT NO 10951149
APP PUB NO 20170272017A1
SERIAL NO

14900033

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Abstract

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The present invention disclose a method and apparatus for pulse-width modulation (PWM) of a variable-frequency drive (VFD), the method comprising: for each sector of a space vector graph for PWM of the VFD, identifying at least two possible clamping phases in switching between the vectors in the sector; comparing currents in multiple phases in at least one PWM cycle; in the sector of the space vector graph corresponding to the PWM cycle, determining the possible clamping phase with the maximum current in the at least two possible clamping phases; and clamping the determined possible clamping phase with the maximum current.

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Patent Owner(s)

  • EATON INTELLIGENT POWER LIMITED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Yilun Shanghai, CN 24 136
Cheng, Xiaomeng Shanghai, CN 5 5

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