On the Feasibility of Integrated Battery Charger Utilizing Traction Motor and Inverter in Plug-In Hybrid Electric Vehicles

Woo, Dong-Gyun; Joo, Dong-Myoung; Lee, Byoung-Kuk

doi:10.1109/tpel.2015.2396200

Cited by 56 publications

(21 citation statements)

References 23 publications

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“…Therefore, it is essential to provide single-phase charging option in addition to the fast three-phase integrated charging. Various proposals for integration of a three-phase machine into single-phase charging process already exist [14]- [18]. Compared to integrated chargers with multiphase machines, discussed here, they provide comparable performances.…”

Section: Single-phase On-board Integrated Battery Chargers For Evs Bamentioning

confidence: 99%

Single-Phase On-Board Integrated Battery Chargers for EVs Based on Multiphase Machines

Subotić

Bodo

Levi

2016

IEEE Trans. Power Electron.

134

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The paper considers integration of multiphase (more than three phases) machines and converters into a single-phase charging process of electric vehicles (EVs) and, thus, complements recently introduced fast charging solutions for the studied phase numbers. One entirely novel topology, employing a five-phase machine, is introduced and assessed jointly with three other topologies that use an asymmetrical nine-phase machine, an asymmetrical six-phase machine, and a symmetrical six-phase machine. In all topologies, both charging and vehicle-to-grid (V2G) mode are viable. Moreover, all are capable of unity power factor operation. A torque is not produced in machines during charging/V2G process so that mechanical locking is not required. Hardware reconfiguration between propulsion and charging/V2G mode is either not required or minimized by using a single switch. Theoretical analysis of operating principles is given, and a control scheme, applicable to all topologies and which includes current balancing and interleaving strategy, is developed. Finally, operation of all topologies is compared by means of experiments in both charging and V2G mode, with a discussion of influence of current balancing and interleaving strategy on the overall performance. Index Terms-Battery chargers, electric vehicles (EVs), integrated on-board chargers, multiphase machines. I. INTRODUCTION E LECTRIC vehicles (EV) drivetrain and charging equipment are never used simultaneously. This allows integration of drivetrain power electronics, primarily an electric machine and an inverter, into the charging process, as an alternative to nonintegrated wired or wireless battery charging [1], [2]. The accomplishments of the integration are savings on cost, weight and space in the vehicle. Although three-phase machines are a preferable choice for propulsion [3], they cannot be easily integrated into fast (three-phase) charging process. The major obstacle is that a rotating field gets produced when three-phase currents flow through the machine. This demands various techniques in order to avoid torque production [4]-[6], which always include additional nonintegrated elements. Hence, the cost and complexity of the system are increased.

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Section: Single-phase On-board Integrated Battery Chargers For Evs Bamentioning

confidence: 99%

Single-Phase On-Board Integrated Battery Chargers for EVs Based on Multiphase Machines

Subotić

Bodo

Levi

2016

IEEE Trans. Power Electron.

134

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“…Four inverters and four sets of three-phase windings were combined to achieve an interleaved operation, with two motors/inverters forming a single-phase ac-dc converter to interface the electrical grid and the other two motors/inverters forming a two-phase bidirectional interleaved buck-boost dc-dc converter to interface the EV battery. In 2015, a dual motor/generator set was proposed as an integrated battery charger to be connected to a single-phase ac electrical grid [202]. Integrated battery chargers based on a single motor and a dual inverter are also common, being proposed in 2015 [203] a topology for charging the secondary battery of EVs through the main battery, with the dual inverter and the motor windings interfacing both batteries.…”

Section: Integrated Battery Chargers For the Vehicle Electrificationmentioning

confidence: 99%

Vehicle Electrification: Technologies, Challenges, and a Global Perspective for Smart Grids

Monteiro¹,

Afonso²,

Sousa³

et al. 2019

Innovation in Energy Systems - New Technologies for Changing Paradigms

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Nowadays, due to economic and climate concerns, the private transportation sector is shifting for the vehicle electrification. For this new reality, new challenges about operation modes are emerging, demanding a cooperative and dynamic operation with the power grid, guaranteeing a stable integration without omitting the power quality. Besides, new attractive and complementary technologies are offered by the vehicle electrification in the context of smart grids, valid for both on board and off board systems. In this perspective, this book chapter presents a global perspective and deals with challenges for the vehicle electrification, covering the key technologies toward a sustainable future. Among others, the flowing topics are covered: (1) Overview of battery charging systems, including on board and off board systems; (2) State of the art of communication technologies for application in the context of vehicular electrification, smart grids and smart homes; (3) Challenges and opportunities concerning wireless power transfer with bidirectional interface to the electrical grid; (4) Future perspectives about bidirectional power transfer between electric vehicles (vehicle to vehicle operation mode); (5) Unified technologies, allowing to combine functionalities of a bidirectional interface with the electrical grid and motor driver based on a single system; and (6) Smart grids and smart homes scenarios and accessible opportunities about operation modes.

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“…As a compromise of pure battery-powered and internal combustion engine (ICE)-based vehicles, hybrid electric vehicles (HEVs) and plug-in HEVs (PHEVs) provide much promise and more flexibility [7]- [11]. For HEV or PHEV applications, permanent-magnet synchronous motors (PMSMs) are a popular motor drive technology [12]- [14], but their magnets typically utilize rare-earth materials, which limits their widespread application in mass production market.…”

Section: Introductionmentioning

confidence: 99%

New Integrated Multilevel Converter for Switched Reluctance Motor Drives in Plug-in Hybrid Electric Vehicles With Flexible Energy Conversion

Gan

et al. 2017

IEEE Trans. Power Electron.

127

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This paper presents an integrated multilevel converter of switched reluctance motors (SRMs) fed by a modular front-end circuit for plug-in hybrid electric vehicle (PHEV) applications. Several operating modes can be achieved by changing the on-off states of the switches in the front-end circuit. In generator driving mode, the battery bank is employed to elevate the phase voltage for fast excitation and demagnetization. In battery driving mode, the converter is reconfigured as a four-level converter, and the capacitor is used as an additional charge capacitor to produce multilevel voltage outputs, which enhances the torque capability. The operating modes of the proposed drive are explained and the phase current and voltage are analyzed in details. The battery charging is naturally achieved by the demagnetization current in motoring mode and by the regenerative current in braking mode. Moreover, the battery can be charged by the external AC source or generator through the proposed converter when the vehicle is in standstill condition. The SRM-based PHEV can operate at different speeds by coordinating the power flow between the generator and battery. Simulation in MATLAB/Simulink and experiments on a three-phase 12/8 SRM confirm the effectiveness of the proposed converter topology. Index Terms-Fast excitation and demagnetization, front-end circuit, multilevel voltage, flexible battery charging, plug-in hybrid electric vehicle (PHEV), switched reluctance motor (SRM).

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On the Feasibility of Integrated Battery Charger Utilizing Traction Motor and Inverter in Plug-In Hybrid Electric Vehicles

Cited by 56 publications

References 23 publications

Single-Phase On-Board Integrated Battery Chargers for EVs Based on Multiphase Machines

Single-Phase On-Board Integrated Battery Chargers for EVs Based on Multiphase Machines

Vehicle Electrification: Technologies, Challenges, and a Global Perspective for Smart Grids

New Integrated Multilevel Converter for Switched Reluctance Motor Drives in Plug-in Hybrid Electric Vehicles With Flexible Energy Conversion

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