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Title: 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.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Sponsoring Org.:
USDOE
OSTI Identifier:
1494593
Patent Number(s):
10,131,245
Application Number:
15/238,003
Assignee:
FORD GLOBAL TECHNOLOGIES, LLC (Dearborn, MI) ARPA-E
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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