Circuit breaker device for DC voltage
AssigneeSiemens Aktiengesellschaft
InventorsThomas Beckert, Peter Koellensperger, Hauke Nannen, Hubert Schierling, Dieter Waegele
Life of this patent
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Abstract
A circuit breaker device is for coupling a DC voltage branch to a positive and a negative conductor on a DC voltage bus. In an embodiment, the circuit breaker device includes a series circuit including a safety fuse and a unidirectional switch module. The switch module has a parallel circuit includes a controllable semiconductor switch element that is conductive in a first current direction and a diode that is conductive in the opposite current direction.
Claims21
A circuit breaker device for coupling a DC voltage branch with a positive conductor and a negative conductor to a DC voltage bus, the circuit breaker device comprising:
- a series circuit including a safety fuse;
- and
- a unidirectional switching module arranged in a housing, the housing including a positive conductor input connection, a negative conductor input connection, a positive conductor output connection and a negative conductor output connection,
- wherein the positive conductor input connection and the negative conductor input connection are connectable to the DC voltage bus,
- wherein the positive conductor output connection and the negative conductor output connection are connectable to the DC voltage branch,
- wherein either the unidirectional switching module is provided between the positive conductor input connection and the positive conductor output connection or the unidirectional switching module is provided between the negative conductor input connection and the negative conductor output connection, and
- wherein the unidirectional switching module including a parallel circuit includes
- a controllable semiconductor switching element, and
- a diode, wherein
- the controllable semiconductor switching element is conductive only in a first current direction of a current, and
- the diode is in a conducting state in a second current direction of the current, opposite the first current direction.
An outgoer switch comprising:
- a circuit breaker device for coupling a DC voltage branch with a positive conductor and a negative conductor to a DC voltage bus,
- the circuit breaker device including
- a series circuit including a safety fuse, and
- a unidirectional switching module arranged in a housing, the housing including a positive conductor input connection, a negative conductor input connection, a positive conductor output connection and a negative conductor output connection,
- wherein the positive conductor input connection and the negative conductor input connection are connectable to the DC voltage bus,
- wherein the positive conductor output connection and the negative conductor output connection are connectable to the DC voltage branch,
- wherein either the unidirectional switching module is provided between the positive conductor input connection and the positive conductor output connection or the unidirectional switching module is provided between the negative conductor input connection and the negative conductor output connection, and
- wherein the unidirectional switching module includes
- a parallel circuit including a controllable semiconductor switching element, and
- a diode, wherein
- the controllable semiconductor switching element is conductive only in a first current direction of a current, and
- the diode is in a conducting state in second current direction of the current, opposite the first current direction.
Dependencies are inferred from the claim text.