A Fuzzy Logic-Based Control Algorithm for the Recharge/V2G of a Nine-Phase Integrated On-Board Battery Charger

Energy demand associated with the ever-increasing penetration of electric vehicles on worldwide roads is set to rise exponentially in the coming years. The fact that more and more vehicles will be connected to the electricity network will offer greater advantages to the network operators, as the pre...

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Bibliographic Details
Published inElectronics (Basel) Vol. 9; no. 6; p. 946
Main Authors De Luca, Felice, Calderaro, Vito, Galdi, Vincenzo
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2020
Subjects
Algorithms
Alternative energy sources
Ancillary services
Batteries
Battery chargers
Computer simulation
Control algorithms
Control theory
Controllers
Distributed generation
Electric potential
Electric vehicle charging
Electric vehicles
Electronic devices
Energy management
Energy resources
Energy sources
Fault tolerance
Fuzzy control
Fuzzy logic
Harmonic distortion
Recharging
Response time
Vehicle-to-grid
Voltage
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Summary:Energy demand associated with the ever-increasing penetration of electric vehicles on worldwide roads is set to rise exponentially in the coming years. The fact that more and more vehicles will be connected to the electricity network will offer greater advantages to the network operators, as the presence of an on-board battery of discrete capacity will be able to support a whole series of ancillary services or smart energy management. To allow this, the vehicle must be equipped with a bidirectional full power charger, which will allow not only recharging but also the supply of energy to the network, playing an active role as a distributed energy resource. To manage recharge and vehicle-to-grid (V2G) operations, the charger has to be more complex and has to require a fast and effective control structure. In this work, we present a control strategy for an integrated on-board battery charger with a nine-phase electric machine. The control scheme integrates a fuzzy logic controller within a voltage-oriented control strategy. The control has been implemented and simulated in Simulink. The results show how the voltage on the DC-bus is controlled to the reference value by the fuzzy controller and how the CC/CV charging mode of the battery is possible, using different charging/discharging current levels. This allows both three-phase fast charge and V2G operations with fast control response time, without causing relevant distortion grid-side (Total Harmonic Distortion is maintained around 3%), even in the presence of imbalances of the machine, and with very low ripple stress on the battery current/voltage.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics9060946