Transformer electrical circuit and installation comprising such a circuit
AssigneeSchneider Electric Industries SAS
InventorYann HERRIOT
Life of this patent
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Abstract
An electric transformer circuit for connecting electrical equipment, such as a renewable energy-based generator or an energy storage system, to an electric grid. The circuit includes a first voltage converter connected to the equipment; a transformer connected to the first converter and a second voltage converter connected to the transformer and the electric grid. The transformer is a weakly coupled transformer, the magnetic coupling between the first coil and the second coil being less than 0.7. The transformer includes a first and second capacitor respectively associated with a first and second coil so as to form, with the corresponding coil, a circuit resonating at frequency f0. The electric transformer circuit can be included in an electric installation.
Claims19
An electric transformer circuit for connecting electrical equipment, such as a renewable energy-based generator or an energy storage system, to an electric grid, said circuit comprising:
- a first voltage converter suitable for connecting the electrical equipment to part of the electric circuit operating with an AC voltage with frequency f0,
- a transformer connected to the first voltage converter and configured to perform an amplitude adaptation between the voltage of the electrical equipment and that of the electric grid, the transformer including a first coil connected to the first converter and a second coil magnetically coupled to the first coil, the first and second coils being arranged secured in movement, the transformer forming the part of the electric circuit working with an AC voltage with frequency f0,
- a second converter configured to connect said second coil to the electric grid, wherein the magnetic coupling between the first coil and the second coil being less than 0.7,
- and wherein in that the transformer includes a first and second capacitor respectively associated with the first and second coils so as to form, with the corresponding coil, a circuit resonating at frequency f0.
Dependencies are inferred from the claim text.