System for managing dc link switching harmonics

A distributed motor drive system includes a power management module and multiple inverter modules integrated with the motors and located on a machine or process remote from the power management module. The power management module distributes DC voltage and command signals to each of the inverters. T...

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Bibliographische Detailangaben
Hauptverfasser: COOPER, MARK R, TALLAM, RANGARAJAN, GRIES, MARK A, RODRIGUES, GARRETT B
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A distributed motor drive system includes a power management module and multiple inverter modules integrated with the motors and located on a machine or process remote from the power management module. The power management module distributes DC voltage and command signals to each of the inverters. The DC voltage is distributed between modules via a DC link cable. The integrated inverters execute switching routines to convert the DC voltage to an AC voltage suitable for controlling the motor. Each of the power management module and the inverters includes a portion of the DC bus capacitance. The distributed motor drive system also includes a link inductance between the power management module and the inverters to limit the amount of reactive current generated by the inverters.