Journal
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
Volume 24, Issue 6, Pages 2190-2198Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCST.2016.2520904
Keywords
Automotive control; benchmark; energy management; heuristic control; hybrid electric vehicle (HEV); supervisory control
Funding
- Engineering and Physical Sciences Research Council [EP/J500239/1]
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Supervisory control systems (SCSs) are used to manage the powertrain of hybrid electric vehicles (HEVs). This brief presents a novel SCS called exclusive operation strategy (XOS) that applies simple rules based on the idea that batteries are efficient at lower loads while engines and generators are efficient at higher loads. The XOS is developed based on insights gained from three conventional SCSs for series HEVs: 1) thermostat control strategy (TCS); 2) power follower control strategy (PFCS); and 3) global equivalent consumption minimization strategy. Also, recent technological developments have been considered to make the XOS more suited to modern HEVs than conventional SCSs. The resulting control decisions are shown to emulate the operation of approximate global optimal solutions and thus achieve significant improvement in fuel economy compared with TCS and PFCS. In addition, the generally linear relationship between required power and engine power for the XOS provides auditory cues to the driver that are comparable to conventional vehicles, thus reducing barriers to adopting HEVs. The simplicity and the effectiveness of the XOS make it a practical SCS.
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