System comprising an electrically excited machine
AssigneeRobert Bosch GmbH
InventorsPeter Feuerstack, Erik Weissenborn, Martin Kessler
Life of this patent
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Abstract
A system includes an n-phase separately excited electrical machine, wherein n≧1, and a controllable first energy store that has n parallel energy supply branches. Every energy supply branch includes a first connection that is connected to a respective phase connection of the electrical machine, and a second connection that is connected to a common reference bus. The reference bus is connected to a neutral point of the electrical machine via an exciter winding of the electrical machine.
Claims12
A system comprising:
- an n-phase separately excited electric machine, wherein n≧1;
- a controllable first energy store, which has n parallel energy supply branches, wherein each of the energy supply branches has a first terminal, which is connected in each case to a phase terminal of the electric machine, and a second terminal, which is connected in each case to a common reference rail, and an exciter winding that is connected to a star point of the electric machine and to the common reference rail to conduct current between the star point of the electric machine and the common reference rail, wherein the exciter winding receives current only via the star point of the electric machine.
A method for operating a system having an n-phase separately excited electric machine, wherein n≧1, and a controllable first energy store, which has n parallel energy supply branches, the method comprising:
- providing a DC voltage component to each of the energy supply branches;
- feeding the DC voltage component into the phase terminals of the n-phase electric machine;
- and
- supplying an exciter winding via a star point of the electric machine with the DC voltage component fed into the phase terminals in order to generate an excitation field in the electric machine,
- wherein the exciter winding only receives the DC voltage component via the star point.
A system comprising:
- an n-phase separately excited electric machine, wherein n≧1;
- a controllable first energy store, which has n parallel energy supply branches, wherein each of the energy supply branches has a first terminal, which is connected in each case to a phase terminal of the electric machine, and a second terminal, which is connected in each case to a common reference rail, and an exciter winding that is connected to a star point of the electric machine and to the common reference rail to conduct current between the star point of the electric machine and the common reference rail, wherein one end of the exciter winding is connected directly to the star point of the electric machine and another end of the exciter winding is connected directly to the common reference rail, and wherein the exciter winding is only provided energy by the first energy store.
Dependencies are inferred from the claim text.