Electrified vehicle DC power conversion with distributed control
Abstract
An electrified vehicle has a battery pack comprising series-connected battery units providing a main voltage. To supply a lower voltage bus equally from all battery units, a plurality of DC/DC converters are powered by respective units and have their outputs in parallel. A central module has an outer loop controller generating a target current to regulate the bus voltage to a predetermined voltage and has an allocator distributing the target current into a plurality of allocated current commands according to respective states of charge of the battery units. A plurality of local controllers each adjusts a current of a respective DC/DC converter. Each local controller receives a respective allocated current command as a respective feedforward control variable. Each local controller uses an error between the bus voltage and the predetermined voltage to be integrated as a respective feedback control variable only when the error is above a threshold.
- Inventors:
- Issue Date:
- Research Org.:
- Ford Global Technologies, LLC, Dearborn, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1494593
- Patent Number(s):
- 10131245
- Application Number:
- 15/238,003
- Assignee:
- FORD GLOBAL TECHNOLOGIES, LLC (Dearborn, MI)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
- DOE Contract Number:
- AR0000271
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2016 Aug 16
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 33 ADVANCED PROPULSION SYSTEMS
Citation Formats
Hand, III, Michael J., and Anderson, Richard Dyche. Electrified vehicle DC power conversion with distributed control. United States: N. p., 2018.
Web.
Hand, III, Michael J., & Anderson, Richard Dyche. Electrified vehicle DC power conversion with distributed control. United States.
Hand, III, Michael J., and Anderson, Richard Dyche. Tue .
"Electrified vehicle DC power conversion with distributed control". United States. https://www.osti.gov/servlets/purl/1494593.
@article{osti_1494593,
title = {Electrified vehicle DC power conversion with distributed control},
author = {Hand, III, Michael J. and Anderson, Richard Dyche},
abstractNote = {An electrified vehicle has a battery pack comprising series-connected battery units providing a main voltage. To supply a lower voltage bus equally from all battery units, a plurality of DC/DC converters are powered by respective units and have their outputs in parallel. A central module has an outer loop controller generating a target current to regulate the bus voltage to a predetermined voltage and has an allocator distributing the target current into a plurality of allocated current commands according to respective states of charge of the battery units. A plurality of local controllers each adjusts a current of a respective DC/DC converter. Each local controller receives a respective allocated current command as a respective feedforward control variable. Each local controller uses an error between the bus voltage and the predetermined voltage to be integrated as a respective feedback control variable only when the error is above a threshold.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}
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