Assembly and method for supplying electrical energy to electrical traction motors in a rail vehicle, in particular in a train set
First Claim
1. An assembly for supplying electrical energy to electrical traction motors in a rail vehicle, wherein the assembly comprises:
- at least one internal combustion engine,a generator allocated to the at least one internal combustion engine in order to generate electrical energy, wherein the generator is mechanically coupled to the internal combustion engine such that it is driven by the internal combustion engine upon generator mode of the generator,a rectifier for rectifying an electrical alternating current generated by the generator,a direct voltage intermediate circuit, which is electrically connected to the generator via the rectifier,whereinthe assembly further comprises a generator inverter, which is present in addition to the rectifier or which is the rectifier operated in the inverter mode, wherein the generator inverter connects the direct voltage intermediate circuit to the generator in order to operate the generator in a motor mode as a motor, andthe assembly further comprises a control for controlling the motor mode of the generator,wherein the control has a signal input for receiving a signal which signals that no drive power is demanded from the internal combustion engine, wherein an idle speed or a range of idle speeds of the internal combustion engine is pre-specified and the control is configured, upon reception of the signal, to control the motor mode of the generator such that the internal combustion engine is driven by the generator at the pre-specified idle speed or at an idle speed in the range of pre-specified idle speeds, wherein electrical energy from the direct voltage intermediate circuit is supplied to the generator via the inverter, wherein the assembly further comprises a plurality of internal combustion engines, wherein an allocated generator is coupled to each of the internal combustion engines, which generator is driven in generator mode by the internal combustion engine in order to generate electrical energy, and which in motor mode of the generator drives the allocated internal combustion engine, wherein the assembly is configured to operate a portion of the generators in the motor mode of the generator if the assembly of several internal combustion engines is operated only in the partial load mode such that only a portion of the internal combustion engines generates mechanical energy and the other internal combustion engines are driven at idle speed by the allocated generator.
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Accused Products
Abstract
An assembly for supplying electrical energy to electrical traction motors in a rail vehicle, wherein the assembly includes at least one internal combustion engine, a generator allocated to the at least one internal combustion engine for generating the electrical energy, wherein the generator is mechanically coupled to the internal combustion engine such that it is driven by the internal combustion engine upon generator operation of the generator, a rectifier for rectifying an electrical alternating current generated by the generator, a direct voltage intermediate circuit that is electrically connected to the generator via the rectifier, a generator inverter that is present in addition to the rectifier or that is the rectifier operated in the inverter mode, wherein the generator inverter connects the direct voltage intermediate circuit to the generator in order to operate the generator in a motor mode as a motor, and a control for controlling the motor mode of the generator.
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Citations
13 Claims
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1. An assembly for supplying electrical energy to electrical traction motors in a rail vehicle, wherein the assembly comprises:
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at least one internal combustion engine, a generator allocated to the at least one internal combustion engine in order to generate electrical energy, wherein the generator is mechanically coupled to the internal combustion engine such that it is driven by the internal combustion engine upon generator mode of the generator, a rectifier for rectifying an electrical alternating current generated by the generator, a direct voltage intermediate circuit, which is electrically connected to the generator via the rectifier, wherein the assembly further comprises a generator inverter, which is present in addition to the rectifier or which is the rectifier operated in the inverter mode, wherein the generator inverter connects the direct voltage intermediate circuit to the generator in order to operate the generator in a motor mode as a motor, and the assembly further comprises a control for controlling the motor mode of the generator, wherein the control has a signal input for receiving a signal which signals that no drive power is demanded from the internal combustion engine, wherein an idle speed or a range of idle speeds of the internal combustion engine is pre-specified and the control is configured, upon reception of the signal, to control the motor mode of the generator such that the internal combustion engine is driven by the generator at the pre-specified idle speed or at an idle speed in the range of pre-specified idle speeds, wherein electrical energy from the direct voltage intermediate circuit is supplied to the generator via the inverter, wherein the assembly further comprises a plurality of internal combustion engines, wherein an allocated generator is coupled to each of the internal combustion engines, which generator is driven in generator mode by the internal combustion engine in order to generate electrical energy, and which in motor mode of the generator drives the allocated internal combustion engine, wherein the assembly is configured to operate a portion of the generators in the motor mode of the generator if the assembly of several internal combustion engines is operated only in the partial load mode such that only a portion of the internal combustion engines generates mechanical energy and the other internal combustion engines are driven at idle speed by the allocated generator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for supplying electrical energy to traction motors in a rail vehicle, comprising the steps of:
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using at least one internal combustion engine in generator mode driving a generator allocated to the internal combustion engine, wherein the generator generates electrical energy, the generated electrical energy is rectified and fed into a direct voltage intermediate circuit from which the at least one traction motor is supplied with traction energy, using the generator in motor mode acquiring electrical energy from the direct voltage intermediate circuit of the generator and driving the internal combustion engine using the generator in motor mode, in the motor mode of the generator upon reception of a signal which signals that no drive power is demanded from the internal combustion engine, the generator is controlled such that the internal combustion engine is driven by the generator at a pre-specified idle speed or at an idle speed in a pre-specified range of idle speeds, wherein a plurality of internal combustion engines is operated, wherein to each of said engines is coupled an allocated generator, which is driven in generator mode by the internal combustion engine in order to generate electrical energy and which in motor mode of the generator drives the allocated internal combustion engine, wherein a portion of the generators is operated in the motor mode of the generator when the assembly of several internal combustion engines is operated only in the partial load mode such that only a portion of the internal combustion engines generates mechanical energy and the other internal combustion engines are driven at idle speed by the allocated generator. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification