US 11,890,968 B2Granted

Power system and associated system

AssigneeTransportation IP Holdings, LLC

InventorsAjith Kuttannair Kumar, Govardhan Ganireddy, Shahid Ali, Prashanth Manikumar Chennamsetty

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Abstract

A power system is disclosed. The power system includes a first power generating unit. The first power generating unit includes a first power converting subunit and a first control unit coupled to the first power converting subunit, where the first control unit is configured to regulate a voltage of the first power generating unit. The power system further includes a second power generating unit coupled to the first power generating unit and a load, where the second power generating unit includes a second power converting subunit and a second control unit coupled to the second power converting subunit, wherein the second control unit is configured to control a current of the second power generating unit to share a quantity of electrical output current flowing through the load among the first and second power generating units.

Claims16

Dependent claims

A power unit comprising:

a power converting subunit configured to receive a current from a second power unit, the power converting subunit configured to be operably coupled with the second power unit and a load;
a filter comprising one or more inductors and a first capacitor, the filter operably coupled with the power converting subunit;
a sensor configured to measure a phase of a voltage of the power unit and a phase of a voltage of the second power unit received by the power unit, wherein the phase of the voltage of the power unit is not communicated to the second power unit and the phase of the voltage of the second power unit is not communicated to the power unit;
and
a control unit operably coupled with the power converting subunit, the control unit configured to control operation of the power converting subunit based on the current received from the second power unit and a voltage received from the first capacitor, the control unit configured to control a current of the power unit to share a quantity of electrical output current flowing to the load with the second power unit without the control unit communicating between the power unit and the second power unit,
wherein the control unit is configured to change an operation of the power converting subunit to change an amount of electric output current generated by the power converting subunit based on an amount of electrical output current received from the second power unit.

3 more elements

A power unit comprising:

a power converting subunit configured to receive a current from a second power unit, the power converting subunit configured to be operably coupled to the second power unit and a load;
a filter comprising one or more inductors and a first capacitor, the filter operably coupled with the power converting subunit;
a sensor configured to measure a phase of a voltage of the power unit and a phase of a voltage of the second power unit received by the power unit, wherein the phase of the voltage of the power unit is not communicated to the second power unit and the phase of the voltage of the second power unit is not communicated to the power unit;
and
a control unit operably coupled with the power converting subunit, the control unit configured to operate in different modes of operation, wherein:
in a first mode of operation, the control unit is configured to regulate a voltage of the power converting subunit;
and
in a second mode of operation, the control unit is configured to control operation of the power converting subunit based on the current received from the second power unit and a voltage received from the first capacitor, the control unit configured to control a current of the power unit to share a quantity of electrical output current flowing to the load with the second power unit without the control unit communicating between the power unit and the second power unit, wherein the control unit is configured to change an operation of the power converting subunit to change an amount of electric output current generated by the power converting subunit based on an amount of electrical output current received from the second power unit.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/197,517Filed 10 Mar 2021 · continuation
Priority: 7 Jul 2017
Published: US 2021/0188097 A124 Jun 2021
Granted: 6 Feb 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

B60L 9/16
Electric propulsion with power supply external to the vehicle: using AC induction motors
B60L 15/002
Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles: for control of propulsion for monorail…
B60L 15/32
Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles: control or regulation of multiple-unit…
B61C 3/00
Electric locomotives or railcars

Family

Application15/643,537Parent of this continuation · filed 7 Jul 2017
US 2021/0188097 A1Pre-grant publication · published 24 Jun 2021
US 10,974,607 B2Parent of this continuation
US 2019/0009690 A1Published application
US 11,890,968 B2This patent

From the US filing history. Foreign family members aren’t listed.