Separately excited electrical synchronous machine, and method for operating a synchronous machine
AssigneeSew-Eurodrive GmbH & Co. KG
InventorsJosef Schmidt, Matthias Hauck, Marek Lewandowski
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Abstract
In a separately excited electrical synchronous machine, and a method for operating a synchronous machine, coil windings, in particular in the form of excitation coils, are disposed on the rotor, the electrical supply of the coil windings being achieved with the aid of an inductive rotation transmitter, whose secondary winding is connected to the rotor and whose primary winding, which is inductively coupled to the secondary winding, is stationary, especially connected to the stator of the synchronous machine.
Claims23
A separately excited electrical synchronous machine, comprising:
- coil windings arranged at a rotor;
- an inductive rotation transmitter adapted to provide an electrical supply to the coil windings, the inductive rotation transmitter including secondary winding connected to the rotor and a stationary primary winding inductively coupled to the secondary winding;
- wherein a capacity is switchable in one of (a) series and (b) parallel to the secondary winding, such that an associated resonant frequency substantially corresponds to a frequency of a current injected into the primary winding.
A method for operating a synchronous machine, comprising:
- supplying coil windings provided on a rotor by an inductive rotation transmitter;
- and
- at least one of (a) controlling and (b) regulating current flowing through the coil windings of the rotor to a setpoint value;
- wherein a capacity is switchable in one of (a) series and (b) parallel to a secondary winding, such that an associated resonant frequency substantially corresponds to a frequency of a current injected into a primary winding.
Dependencies are inferred from the claim text.