Electrical charging system
First Claim
1. An electrical charging system (1) for an energy accumulator (2) of a motor vehicle, the electrical charging system (1) comprising:
- a supply input (4, 4′
) in a conductor system having at least one phase conductor (4a) and a neutral line (4b) for energy supply from a power grid,the charging system (1) also comprising a rotating field machine (6) which, via phase windings (u, v, w), being operably connected thereby to a first side of an inverter (3), wherein the inverter is controlled by a control system,a second side of the inverter (3) being operably connected to the energy accumulator (2) to be charged,the phase windings (u, v, w) of the rotating field machine (6) being either selectively isolated or interconnected,a potential line (5b) electrically connecting the neutral line (4b) of the supply input (4) to the inverter (3) via an electrical pathway which bypasses the phase windings (u, v, w), andthe charging system (1) being designed, by at least one isolated phase winding (u, v, w), for one of a step-up connecter charging operation and a step-down charging operation.
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Accused Products
Abstract
An electrical charging system for an energy accumulator of a motor vehicle. The electrical charging system comprises a supply input in a conductor system having at least one phase conductor and a neutral line for energy supply from a grid. The charging system also comprises a rotating field machine which, via its phase windings, is operably connected to a rectifier. The rectifier is provided on the other side for connection to the energy accumulator to be charged, the phase windings of the rotating field machine can be either selectively isolated and interconnected such that the charging system is designed for step-up connecter charging operation and step-down charging operation by way of at least one isolated phase winding and, in particular, all the isolated phase windings.
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Citations
19 Claims
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1. An electrical charging system (1) for an energy accumulator (2) of a motor vehicle, the electrical charging system (1) comprising:
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a supply input (4, 4′
) in a conductor system having at least one phase conductor (4a) and a neutral line (4b) for energy supply from a power grid,the charging system (1) also comprising a rotating field machine (6) which, via phase windings (u, v, w), being operably connected thereby to a first side of an inverter (3), wherein the inverter is controlled by a control system, a second side of the inverter (3) being operably connected to the energy accumulator (2) to be charged, the phase windings (u, v, w) of the rotating field machine (6) being either selectively isolated or interconnected, a potential line (5b) electrically connecting the neutral line (4b) of the supply input (4) to the inverter (3) via an electrical pathway which bypasses the phase windings (u, v, w), and the charging system (1) being designed, by at least one isolated phase winding (u, v, w), for one of a step-up connecter charging operation and a step-down charging operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for operating a charging system (1) comprising a supply input (4, 4′
- ) in a conductor system having at least one phase conductor (4a) and a neutral line (4b) for receiving energy supply from a power grid, the charging system (1) also comprising a rotating field machine (6) which, via phase windings (u, v, w) being operably connected thereby on a first side to an inverter (3), wherein the inverter is controlled by a control system, the inverter (3) being connected on a second side to the energy accumulator (2) to be charged, a potential line (5b) electrically connecting the neutral line (4b) of the supply input (4) to the inverter (3) via an electrical pathway which bypasses the phase windings (u, v, w), and the phase windings (u, v, w) of the rotating field machine (6) being either selectively isolated or interconnected, and the charging system (1) being designed for step-up connecter charging operation and for step-down charging operation by at least one isolated phase winding (u, v, w), the method comprising the steps of;
cyclically operating at least one first switch (S3, S4, S5) arranged in the active phase conductor (4a), in a first, step-down converter operating mode of the charging system (1), in which the charging system (1) acts as a step-down converter in a direction toward an energy accumulator (2); and respectively electrically isolating the phase winding (u, v, w) connected to the first switch (S3, S4, S5), via an associated tap (A1, A2, A3), such that the inverter (3) works in a loop-through operating mode. - View Dependent Claims (16, 17, 18)
- ) in a conductor system having at least one phase conductor (4a) and a neutral line (4b) for receiving energy supply from a power grid, the charging system (1) also comprising a rotating field machine (6) which, via phase windings (u, v, w) being operably connected thereby on a first side to an inverter (3), wherein the inverter is controlled by a control system, the inverter (3) being connected on a second side to the energy accumulator (2) to be charged, a potential line (5b) electrically connecting the neutral line (4b) of the supply input (4) to the inverter (3) via an electrical pathway which bypasses the phase windings (u, v, w), and the phase windings (u, v, w) of the rotating field machine (6) being either selectively isolated or interconnected, and the charging system (1) being designed for step-up connecter charging operation and for step-down charging operation by at least one isolated phase winding (u, v, w), the method comprising the steps of;
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19. A motor vehicle in combination with a charging system (1) for an energy accumulator (2) of a motor vehicle, the electrical charging system (1) comprising:
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a supply input (4, 4′
) in a conductor system having at least one phase conductor (4a) and a neutral line (4b) for energy supply from a power grid,the charging system (1) also comprising a rotating field machine (6) which, via phase windings (u, v, w), being operably connected thereby to a first side of an inverter (3), wherein the inverter is controlled by a control system, the inverter (3) being operably connected on a second side to the energy accumulator (2) to be charged, a potential line (5b) electrically connecting the neutral line (4b) of the supply input (4) to the inverter (3) via an electrical pathway which bypasss the phase windings (u, v, w), the phase windings (u, v, w) of the rotating field machine (6) being either selectively isolated or interconnected, and the charging system (1) being designed for step-up connecter charging operation and for step-down charging operation by at least one isolated phase winding (u, v, w).
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Specification