Turbocompressor shutdown mechanism
First Claim
1. A proton exchange membrane fuel cell system comprising:
- a turbocompressor comprising a turbine, a compressor, a rotatable shaft connecting the turbine and compressor at opposite ends of the shaft, and an electric motor coupled to the compressor wherein the turbine comprises an inlet port configured to receive a turbine air feed; and
a turbine wheel connected to the shaft and configured to rotate in response to a torque (τ
A) provided by the turbine air feed, the rotation of the turbine wheel being configured to rotate the rotatable shaft;
the compressor comprises an inlet port configured to receive a compressor air feed;
a compressor wheel connected to the shaft and configured to rotate with the rotatable shaft, the rotation of the compressor wheel being configured to compress the compressor air feed; and
an outlet port configured to output the compressed air;
the electric motor is configured to deliver a torque (τ
M) to the compressor wheel in a direction opposite the direction of rotation of the rotatable shaft, wherein the torque (τ
M) is operable to assist in stopping the rotation of the compressor wheel, the shaft, and the turbine wheel; and
at least one fuel cell reactor configured to generate electric power and comprising at least one fuel cell stack and a fuel cell inlet port, wherein the inlet port is in fluid communication with the outlet port of the compressor and is configured such that the compressed air outputted from the compressor is delivered to the fuel cell stack via the fuel cell inlet port.
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Accused Products
Abstract
Turbocompressors 1 comprise a turbine 10, a compressor 30, a rotatable shaft 20 connecting the turbine 10 and compressor 30 at opposite ends of the shaft 20, and an electric motor 50 coupled to the compressor 30. The turbine 10 comprises an inlet port 14 configured to receive an air feed, and a turbine wheel 12 connected to the shaft 20 and configured to rotate in response to a torque (τM) provided by the air feed. The rotation of the turbine wheel 12 is rotates the rotatable shaft 20 and a compressor wheel 32 of the compressor 30 connected thereto. The compressor 30 comprises an inlet port configured to receive and compress an air feed. The electric motor 50 may deliver a torque (τM) to the compressor wheel 32 in a direction opposite the direction of rotation of the rotatable shaft 20 in order to shut down the turbocompressor 1.
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Citations
10 Claims
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1. A proton exchange membrane fuel cell system comprising:
a turbocompressor comprising a turbine, a compressor, a rotatable shaft connecting the turbine and compressor at opposite ends of the shaft, and an electric motor coupled to the compressor wherein the turbine comprises an inlet port configured to receive a turbine air feed; and
a turbine wheel connected to the shaft and configured to rotate in response to a torque (τ
A) provided by the turbine air feed, the rotation of the turbine wheel being configured to rotate the rotatable shaft;
the compressor comprises an inlet port configured to receive a compressor air feed;
a compressor wheel connected to the shaft and configured to rotate with the rotatable shaft, the rotation of the compressor wheel being configured to compress the compressor air feed; and
an outlet port configured to output the compressed air;
the electric motor is configured to deliver a torque (τ
M) to the compressor wheel in a direction opposite the direction of rotation of the rotatable shaft, wherein the torque (τ
M) is operable to assist in stopping the rotation of the compressor wheel, the shaft, and the turbine wheel; and
at least one fuel cell reactor configured to generate electric power and comprising at least one fuel cell stack and a fuel cell inlet port, wherein the inlet port is in fluid communication with the outlet port of the compressor and is configured such that the compressed air outputted from the compressor is delivered to the fuel cell stack via the fuel cell inlet port.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification