Device having redundant power supply lines
AssigneeMurrelektronik GmbH
InventorsKai Fortwingel, Ingo Wolff
Life of this patent
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Abstract
A device has an electric power supply line between an electrical load and a DC voltage source with a positive pole and a negative pole. The supply line delivers the requisite electrical energy for the operation of the load. The electric power supply line includes at least four adjacently routed, identically configured and insulated individual conductors of equal length, wherein at least two individual conductors connect the positive pole to the load, and at least two individual conductors connect the negative pole to the load. Each of the individual conductors forms an independent electrical connection between the DC voltage source and the electrical load.
Claims9
A device interposed between an electrical load and a DC voltage source having a positive pole and a negative pole, said device comprising:
- an electric supply line between said electrical load and said DC voltage source for delivering a requisite electrical energy for operating said load;
- said electric supply line including four individual conductors;
- said four individual conductors being adjacently routed, identically configured, individually insulated and being of equal length;
- a first two individual conductors of said four individual conductors connecting said positive pole to said load and a second two individual conductors of said four individual conductors connecting said negative pole to said load;
- each of said four individual conductors forming an independent electrical connection between said DC voltage source and said electrical load;
- a monitor arranged between said first two individual conductors and said second two individual conductors;
- and,
- wherein one of the following applies:
- i) said monitor is configured to execute a comparison of respective currents flowing in said individual conductors;
- and, to do at least one of the following in response to a current difference in said individual conductors:
- a) generate a signal output;
- and, b) trigger a cutoff device;
- or,
- ii) said monitor is configured to capture electromagnetic fields associated with currents flowing in said individual conductors and to execute a mutual comparison of electromagnetic fields associated with currents flowing in two respective individual conductors and, in response to a field difference to do at least one of:
- a) generate a signal output;
- and, b) to trigger a cut-off device;
- or,
- iii) said monitor is configured to capture the temperature at a respectively preselected connection point of said individual conductors and to execute a mutual comparison of temperatures at the preselected connection points of the individual conductors and, in response to a temperature difference, to do at least one of:
- a) generate a signal output;
- and, b) trigger a cut-off device.
Dependencies are inferred from the claim text.