DC-power system with system protection capabilities
First Claim
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1. A DC-power system for powering a vessel, comprising:
- a main DC bus,a power generating unit feeding the main DC bus with an output voltage and current,a first disconnector arranged between the main DC bus and the power generating unit for isolating the power generating unit from the main DC bus in case of a main DC bus fault, wherein when a fault has occurred in the DC-power system, the power generating unit is configured to limit the output voltage and current to a level that permits the first disconnector to operate within its rating, anda drive unit being fed by the main DC bus, wherein the drive unit comprises a drive unit bus system, converter units connected to the drive unit bus system, and fuses (F) arranged between the drive unit bus system and the converter units for protecting the converter units in case of a drive unit fault,wherein the drive unit comprises a first input unit arranged between the main DC bus and the drive unit bus system, and wherein the first input unit comprises a second disconnector for disconnecting the drive unit from the main DC bus in case of a drive unit fault.
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Abstract
A DC-power system including a main DC bus, a power generating unit arranged to feed the main DC bus, an isolator switch arranged between the main DC bus and the power generating unit for isolating the power generating unit from the main DC bus in case of a main DC bus fault, a drive unit arranged to be fed by the main DC bus, wherein the drive unit includes a drive unit bus system, converter units connected to the drive unit bus system, and fuses arranged between the drive unit bus system and the converter units for protecting the converter units in case of a drive unit fault.
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Citations
14 Claims
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1. A DC-power system for powering a vessel, comprising:
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a main DC bus, a power generating unit feeding the main DC bus with an output voltage and current, a first disconnector arranged between the main DC bus and the power generating unit for isolating the power generating unit from the main DC bus in case of a main DC bus fault, wherein when a fault has occurred in the DC-power system, the power generating unit is configured to limit the output voltage and current to a level that permits the first disconnector to operate within its rating, and a drive unit being fed by the main DC bus, wherein the drive unit comprises a drive unit bus system, converter units connected to the drive unit bus system, and fuses (F) arranged between the drive unit bus system and the converter units for protecting the converter units in case of a drive unit fault, wherein the drive unit comprises a first input unit arranged between the main DC bus and the drive unit bus system, and wherein the first input unit comprises a second disconnector for disconnecting the drive unit from the main DC bus in case of a drive unit fault. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of handling a fault in a DC-power system comprising a main DC bus, power generating units configured to feed the main DC bus, a first disconnector arranged between the main DC bus and each power generating unit for isolating the power generating unit from the main DC bus, and a drive unit configured to be fed by the main DC bus, wherein the drive unit comprises a drive unit bus system, converter units connected to the drive unit bus system, and fuses arranged between the drive unit bus system and the converter units for protecting the converter units in case of a drive unit fault, wherein the drive unit comprises a first input unit arranged between the main DC bus and the drive unit bus system, and wherein the first input unit comprises a second disconnector for disconnecting the drive unit from the main DC bus in case of a drive unit fault, wherein the method comprises:
limiting, in a situation when a fault has occurred in the DC-power system, a voltage output and current of each power generating unit to a level that permits the respective first disconnector to operate within its ratings, wherein the first disconnectors are configured to disconnect the power generating units from the main DC bus. - View Dependent Claims (14)
Specification