IoT-Based Supervisory Control of an Asymmetrical Nine-Phase Integrated on-Board EV Battery Charger

Integrated on-board battery chargers (OBCs) have been recently introduced as an optimal/elegant solution to increase electric vehicle (EV) market penetration as well as minimize overall EV cost. Unlike conventional off-board and on-board battery chargers, integrated OBCs exploit the existing propulsion equipment for battery charging without extra bulky components and/or dedicated infrastructure. OBCs are broadly categorized into three-phase and single-phase types with unidirectional or bidirectional power flow. This paper starts with surveying the main topologies introduced in the recent literature employing either induction or permanent magnet motors to realize fully integrated slow (single-phase) and fast (threephase) on-board EV battery charging systems, with emphasis on topologies that entail no or minimum hardware reconfiguration. Although, permanent magnet (PM) motors with conventional double-layer distributed winding layouts have been deployed in most commercial EV motors, the non-overlapped fractional slot concentrated winding (FSCW) has been the prevailing choice in the most recent permanent magnet motor designs due to its outstanding operational merits. Hence, a thorough investigation of the impact different FSCW stator winding designs have on machine performance under the charging process is presented in this paper. To this end, the induced magnet losses, which represent a challenging demerit of the FSCW, have been used to compare different topologies under both propulsion and charging operation modes. Based on the introduced comparative study, the optimal slot/pole combinations that correspond to the best compromise under both operational modes have been highlighted. INDEX TERMS Integrated chargers, on-board battery chargers (OBCs), multiphase machines, fractional slot concentrated winding (FSCW), battery charging, optimal slot/pole combinations, reviews. MOHAMED Y. METWLY received the B.Sc. degree in electrical engineering from Alexandria University, Alexandria, Egypt, in 2018. He is currently a Researcher with Smart-CI, Alexandria University. His current research interests include battery chargers, electric vehicles, and renewable energy systems. MAHMOUD S. ABDEL-MAJEED received the B.Sc. degree in electrical engineering from Alexandria University, Alexandria, Egypt, in 2019. He is currently a Researcher with Smart-CI, Alexandria University. His current research interests include battery chargers, automotive, smart grid, and power electronics.

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“…• Optimization of V2G and G2V operational modes by employing information and communication enabling technologies [111].…”

Section: A Integrated Obcs Enhancementsmentioning

confidence: 99%

A Review of Integrated On-Board EV Battery Chargers: Advanced Topologies, Recent Developments and Optimal Selection of FSCW Slot/Pole Combination

et al. 2020

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“…Due to the limited power transfer capability of OBCs, the integrated on-board EV battery chargers have recently emerged as a compromise between the EV cost, volume, and weight while simultaneously offering a charging power at the same rated current [34][35][36]. Integrated OBCs reuse the powertrain elements, including the motor and inverter, in the charging process.…”

Section: A Theory Operation Of Integrated Obcmentioning

confidence: 99%

Investigation of Six-Phase Surface Permanent Magnet Machine With Typical Slot/Pole Combinations for Integrated Onboard Chargers Through Methodical Design Optimization

Metwly

Ahmed

Hemeida

et al. 2023

IEEE Trans. Transp. Electrific.

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This paper presents an analytical magnetic equivalent circuit (MEC) modeling approach for a six-phase surface-mounted permanent magnet (SPM) machine equipped with fractional slot concentrated winding (FSCW) for integrated onboard chargers. For the sake of comparison, selected asymmetrical six-phase slot/pole combinations with the same design specifications and constraints are first designed based on the parametric MEC model and then optimized using a multiobjective genetic algorithm (MOGA). The commercial BMW i3 design specifications are adopted in this paper. The main focus of this study is to achieve optimal design of the SPM machine considering both the propulsion and charging performances. Thus, a comparative study of the optimization cost functions, including the peak-to-peak torque ripple and core losses under both motoring and charging modes and electromagnetic forces under charging, is conducted. In addition, the demagnetization capability in the charging mode and the overall cost of the employed machines are optimized. Since the average propulsion torque is crucial in electric vehicle (EV) applications, it is maintained through the design optimization process. Furthermore, finite element (FE) simulations have been carried out to verify the results obtained from the analytical MEC model. Eventually, the effectiveness of the proposed design optimization process is corroborated with experimental tests on a 2-kW prototype system.

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“…In this paper, the bidirectional AC/DC converter has the function of PFC and supports the more considerable charging power due to the use of three-phase charging. The proposed studies realized integration by using the special motors (such as the multiphase motor [8]- [11], the switched reluctance motor [12], [13]) or by changing the internal structure of the motor (such as split winding [14]- [16], open winding motor [17]- [19]). These motors or motor structures are not widely used in EVs.…”

Section: Introductionmentioning

confidence: 99%

Driving–Charging Integrated Controller for Electric Vehicles

2022

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Motor driving technology and battery charging technology are the two core technologies of electric vehicles (EVs). They have a profound impact on the performance and mileage of EVs. Based on the topology of a traditional EV motor controller, this study employs the time-sharing multiplexing insulated gate bipolar transistor (IGBT) power module form to expand the functions of the motor controller. This paper proposes an integrated driving-charging controller structure that enables the controller to realize the motor driving and on-board charging simultaneously. A decoupling analysis was performed at the topology level, mathematical models of two bidirectional converters in the integrated topology were established, and a reasonable control strategy for the double-closed-loop control system was designed. The simulation system was built in Simulink, and the simulation results verified the effectiveness of the system topology and control strategy. We made an integrated controller experimental platform based on TMS320F28335. A resistive load simulated the power battery to verify the charging mode, and a 5kW permanent magnet synchronous motor (PMSM) was used to verify the driving mode. The experimental results demonstrated the driving-charging integrated controller's feasibility for electric vehicles.INDEX TERMS on-board charger, driving-charging integration, bidirectional AC/DC converter, bidirectional DC/DC converter.

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IoT-Based Supervisory Control of an Asymmetrical Nine-Phase Integrated on-Board EV Battery Charger

Abstract: This work was achieved by the financial support of ITIDAs ITAC collaborative funded project under the category type of preliminary research projects (PRP) and grant number PRP2018.R25.4.

Cited by 18 publications

References 25 publications

A Review of Integrated On-Board EV Battery Chargers: Advanced Topologies, Recent Developments and Optimal Selection of FSCW Slot/Pole Combination

A Review of Integrated On-Board EV Battery Chargers: Advanced Topologies, Recent Developments and Optimal Selection of FSCW Slot/Pole Combination

Investigation of Six-Phase Surface Permanent Magnet Machine With Typical Slot/Pole Combinations for Integrated Onboard Chargers Through Methodical Design Optimization

Driving–Charging Integrated Controller for Electric Vehicles

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