Pantograph bounce logic
AssigneeCummins Power Generation Inc.
InventorsLatif M. Shaikh, Anand Narayan Jarudkar, Amit Balkrishna Sonpethkar, Sushant Petare, Vysakh M
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Abstract
Systems and apparatuses include one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to: determine a pantograph bounce event based on an input voltage and an input voltage frequency; automatically disable a rectifier in response to determining the pantograph bounce event; record an instant DC link voltage at the time the rectifier is disabled; and set a reference DC voltage to the instant DC link voltage.
Claims21
A system for protecting from pantograph bounce events, comprising:
- a pantograph disposed on a railway car, the pantograph structured to be electrically coupled with a contact wire to receive electric power from the contact wire;
- a hotel load converter (HLC) disposed in the railway car, the HLC structured to be electrically coupled with the pantograph, the HLC comprising a power electronic component configured to perform alternating current (AC/AC) conversion on the electric power received via the contact wire from the railway car;
- and
- a controller disposed in the railway car, the controller structured to be electrically coupled with the HLC, the controller comprising a bounce circuit configured to:
- identify, at an input of the HLC, a voltage and a frequency of the voltage of the electric power from the pantograph;
- determine that the voltage satisfies a voltage threshold and the frequency satisfies a frequency threshold;
- detect a bounce event in a connection between the pantograph and the contact wire providing the electric power based on the voltage satisfying the voltage threshold and the frequency satisfying the frequency threshold;
- and
- disable, responsive to detecting the bounce event, the power electronic component in the HLC.
A controller, comprising:
- a bounce circuit comprising one or more processors coupled with memory, configured to:
- monitor, at an input of a hotel load converter (HLC), a voltage and a frequency of the voltage of electric power received by the HLC from a contact wire via a pantograph of a railway car;
- compare the voltage with a voltage threshold and the frequency of the voltage with a frequency threshold;
- determine an occurrence of a bounce event in a connection between the pantograph and the contact wire, responsive to the voltage satisfying the voltage threshold and the frequency satisfying the frequency threshold for a time exceeding a threshold period of time;
- and
- disable, in response to determining the occurrence of the bounce event, a rectifier of the HLC.
A method of providing continuous power through pantograph bounce events, comprising:
- monitoring, by a controller, at an input of a hotel load converter (HLC), a voltage and a frequency of the voltage of electric power received via a pantograph from a contact wire;
- determining, by the controller, that the voltage satisfies a voltage threshold and the frequency satisfies a frequency threshold;
- detecting, by the controller, a bounce event in a connection between the pantograph and the contact wire, responsive to determining the voltage satisfying the voltage threshold and the frequency satisfying the frequency threshold;
- and
- performing, by the controller, responsive to detecting the bounce event, an operation on a power electronic component in the HLC.
(canceled)
Dependencies are inferred from the claim text.