Analysis of charging torque in a three-phase integrated charger of electrical vehicle

Zhang, Duan; Zhao, Feng; Cong, Wei; Wang, Yongxing; Zhang, Dong; Xu, Wen

doi:10.1109/itec-ap.2014.6940908

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…The cancellation of the torque generated on the machine has been receiving quite a lot of attention lately. The torque generated is analyzed in [17] and the authors propose to use a brake to mitigate it, which causes extra noise and increments the cost of the system. Other solutions proposed include using several machines [14], custom windings [12] and multiphase machines [10], [13], [18], [19].…”

Section: Introductionmentioning

confidence: 99%

Improved Three-Phase Integrated Charger Converter Connected to Single-Phase Grid With Torque Cancellation

et al. 2021

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Although there is a growing interest in developing fast charging methods to enhance the Electric Vehicles' appeal, the main energy supply is still the single-phase outlet. While single-phase charging may be simpler than three-phase, there are challenges in the integration of the propulsion and charging systems without adding inductive grid filters. Such integration would bring benefits like the simplification and reduction of components, costs, volume or weight. This can be achieved by using the windings of the propulsion machine as grid filters, but the use of the electric motor as a grid inductive filter leads to the generation of pulsating torque during the charging state. This translates into vibration, noise and eventually, damage to the motor and other components of the system. In this work, the authors propose a control strategy that considerably reduces the peaks of pulsating torque generated in any rotor position while using the machine wingdings as filter. Simulation tests have been carried out to validate the control strategy, taking into account the system efficiency. Finally, experiments are conducted to prove that the reduction of the torque pulsation is achieved.INDEX TERMS Integrated charger, Electric Vehicles (EV), permanent magnet synchronous motor (PMSM), battery charger

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Section: Introductionmentioning

confidence: 99%

Improved Three-Phase Integrated Charger Converter Connected to Single-Phase Grid With Torque Cancellation

et al. 2021

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“…18 If the employed motor can be simply modified from a 3p star-connected motor, it will bring great convenience for the application of the integrated charger. In previous studies, 19,20 a 3p open-winding PMSM (OW-PMSM) is employed in the integrated charger. In the motor-drive mode, the circuit and the control strategy are consistent with the typical 3p star-connected motor driver.…”

mentioning

confidence: 99%

An electric vehicle integrated battery charger with high utilization rate of the three‐phase open‐winding permanent‐magnet‐synchronous‐motor

et al. 2022

Circuit Theory & Apps

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This paper proposes an integrated battery charger for electrical vehicles (EVs) employing a three-phase open-winding permanent magnet synchronous motor (3p OW-PMSM), which can be simply modified from a typical star-connected PMSM. It reutilizes the existing propulsion components to achieve fast charging and vehicle to grid (V2G) operations. Only one nonintegrated inductor is added to realize torque cancelation so that no rotation or vibration is generated. In the fast-charging and the V2G modes, the current flowing through the inductor is half of one phase grid current, namely, one in six of the total grid currents. The rest five in six of the grid currents flow through the stator windings of the motor. Hence, the proposed integrated system has a high utilization rate of the motor and possesses high power density. In addition, an individual inner current controller for each leg of the AC-DC converter is employed to ensure the unity power factor, low current harmonics, and torque elimination.In the motor-drive mode, the equivalent circuit is consistent with the conventional 3p star-connected motor driver. Therefore, it does not increase the complexity of the motor-drive control strategy. Finally, simulation and experimental results for fast-charging, V2G, and propulsion operations verify the feasibility of the proposed scheme.

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An integrated charger using segmented windings of interior permanent magnet motor based on 3 phase with 9 windings

Raherimihaja

Zhang

et al. 2018

2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA)

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Analysis of charging torque in a three-phase integrated charger of electrical vehicle

Cited by 6 publications

References 10 publications

Improved Three-Phase Integrated Charger Converter Connected to Single-Phase Grid With Torque Cancellation

Improved Three-Phase Integrated Charger Converter Connected to Single-Phase Grid With Torque Cancellation

An electric vehicle integrated battery charger with high utilization rate of the three‐phase open‐winding permanent‐magnet‐synchronous‐motor

An integrated charger using segmented windings of interior permanent magnet motor based on 3 phase with 9 windings

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