Patent ID: 6981940

Claim:
A control system for a decanter centrifuge, said decanter centrifuge when rotating having kinetic energy, said control system comprising: (a) a variable frequency drive receiving power from an AC source and connected to a main drive motor, said main drive motor for rotating a bowl of said decanter centrifuge; (b) a variable frequency drive connected to a back drive motor, said back drive motor for rotating a conveyor of said decanter centrifuge; (c) a common DC bus connected to said variable frequency drive connected to said main drive motor and to said variable frequency drive connected to said back drive motor; (d) means connected to said common DC bus and a stand for providing lubrication to said decanter centrifuge for controlling said lubrication stand; said decanter centrifuge kinetic energy providing through said variable frequency drive connected to said main drive motor power for said DC bus in the absence of power from said AC source.