Method for controlling a multiphase electric motor operating in star-connected mode
AssigneeGrundfos Management A/S
InventorJan Caroe Aarestrup
Life of this patent
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Abstract
A method serves for starting a polyphase electric motor which is operated in a star connection. The method conductively bridges at least one winding part of a phase of the motor and electrically disconnects the bridged winding part, in order in this manner, to supply a higher voltage to the remaining, electrically effective windings, and thus to increase the flow of current and thus the torque.
Claims8
A method for activating a polyphase electric motor operated in a star connection, for starting the motor, the method comprising conductively bridging at least one winding part in at least one but less than all of the phases of the motor such that each bridged winding part is electrically disconnected, wherein by way of the conductive bridging of the at least one winding part or one winding of the at least one but less than all phases of the motor, a greater voltage is supplied to the remaining phases of the motor having windings that are unbridged.
Dependencies are inferred from the claim text.