Grundfos Management A/s

Bjarne Henriksen

Henrik Kragh

Hakon Borsting

Claus B Rasmussen

A submersible motor is provided for a submersible pump, the motor being configured as a single-phase asynchronous motor, which includes a main winding (), an auxiliary winding (), and a starting device () for controlling the starting procedure of the submersible motor. The starting device () for the control of the current feed of the auxiliary winding () includes at least one electronic switch () in the circuit of the auxiliary winding ().

Submersible motor

The invention relates to a two-phase permanent magnet motor which is controlled by a frequency converter. The frequency converter is advantageously provided with a three-phase inverter having six switches that are controlled in such a manner as to minimize switching losses.

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Hedensted, Denmark

Bjarne Henriksen