Electric oil pump design of hybrid continuously variable transmission

Liu, Yunfeng; Zhou, Yue; Qu, Daohai; Zhang, Feitie; Bao, Xianqi

doi:10.1049/iet-epa.2018.5962

Cited by 5 publications

(6 citation statements)

References 21 publications

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“…Using the control parameters of the designed motors, the dq voltage equation can be constructed as following as a conventional dq model [24][25][26][27]…”

Section: Conventional Design Of 12-48v Inverter-fed Blac Motor For Iementioning

confidence: 99%

“…The voltage relationship between the switching frequency and T min in symmetric SVPWM is illustrated in Fig. 8 [25].…”

Section: Definition Of Motor and Inverter Parameters (Step Ii)mentioning

confidence: 99%

“…Using the control parameters of the designed motors, the dq voltage equation can be constructed as following as a conventional dq model [24–27]

\begin{matrix} right leftthickmathspace.5em \\ [\begin{matrix} v_{d} \\ v_{q} \end{matrix}] & = [\begin{matrix} R_{normalph} & 0 \\ 0 & R_{normalph} \end{matrix}] [\begin{matrix} i_{d} \\ i_{q} \end{matrix}] + [\begin{matrix} v_{o d} \\ v_{o q} \end{matrix}] \\ \times [\begin{matrix} v_{o d} \\ v_{o q} \end{matrix}] [\begin{matrix} 0 & - ω L_{q} \\ ω L_{d} & 0 \end{matrix}] [\begin{matrix} i_{d} \\ i_{q} \end{matrix}] + [\begin{matrix} 0 \\ ω_{s} Ψ_{a} \end{matrix}] \end{matrix}

where

R_{ph}

is the resistance of motor,

v_{d}

and

v_{q}

are the d ‐axis and q ‐axis voltages, respectively,

i_{d}

and

i_{q}

are the d ‐axis and q ‐axis currents, respectively,

L_{d}

and

L_{q}

are the d ‐a...…”

Section: Conventional Design Of 12–48v Inverter‐fed Blac Motor For Iementioning

confidence: 99%

See 2 more Smart Citations

System‐level optimal design process of inverter‐fed BLAC motor used for 12–48 V integrated electric brake system

Hwang

Kwon

2020

IET Electric Power Applications

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In this study, to maximise the performance and efficiency of 48 V integrated electric brake (IEB) system, a systemlevel optimal design process is proposed for inverter-driven brushless AC (BLAC) motor, taking into account the available input voltage that varies depending on the motor operating conditions. To get available input voltages, the voltage drops of battery wiring and inverter are reversely calculated from the motor output power. In the optimal design process, the resistance components in the inverter are separated into DC and AC parts, and these are analysed by including the dq equivalent circuit for motor analysis. The battery currents are obtained using the calculated maximum output performance and the loss between the battery and inverter. The proposed design process is applied to the optimal design of the 48 V motor for IEB systems. Also, to reduce the development cost of the 48 V motor, the manufacturing tools of the previously developed 12 V motor are shared. As an optimal design results, it is confirmed that there is an efficiency improvement effect of ∼5% compared to the conventional design of 12-48 V BLAC motor.

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“…Using the control parameters of the designed motors, the dq voltage equation can be constructed as following as a conventional dq model [24][25][26][27]…”

Section: Conventional Design Of 12-48v Inverter-fed Blac Motor For Iementioning

confidence: 99%

“…The voltage relationship between the switching frequency and T min in symmetric SVPWM is illustrated in Fig. 8 [25].…”

Section: Definition Of Motor and Inverter Parameters (Step Ii)mentioning

confidence: 99%

“…Using the control parameters of the designed motors, the dq voltage equation can be constructed as following as a conventional dq model [24–27]

\begin{matrix} right leftthickmathspace.5em \\ [\begin{matrix} v_{d} \\ v_{q} \end{matrix}] & = [\begin{matrix} R_{normalph} & 0 \\ 0 & R_{normalph} \end{matrix}] [\begin{matrix} i_{d} \\ i_{q} \end{matrix}] + [\begin{matrix} v_{o d} \\ v_{o q} \end{matrix}] \\ \times [\begin{matrix} v_{o d} \\ v_{o q} \end{matrix}] [\begin{matrix} 0 & - ω L_{q} \\ ω L_{d} & 0 \end{matrix}] [\begin{matrix} i_{d} \\ i_{q} \end{matrix}] + [\begin{matrix} 0 \\ ω_{s} Ψ_{a} \end{matrix}] \end{matrix}

where

R_{ph}

is the resistance of motor,

v_{d}

and

v_{q}

are the d ‐axis and q ‐axis voltages, respectively,

i_{d}

and

i_{q}

are the d ‐axis and q ‐axis currents, respectively,

L_{d}

and

L_{q}

are the d ‐a...…”

Section: Conventional Design Of 12–48v Inverter‐fed Blac Motor For Iementioning

confidence: 99%

See 1 more Smart Citation

System‐level optimal design process of inverter‐fed BLAC motor used for 12–48 V integrated electric brake system

Hwang

Kwon

2020

IET Electric Power Applications

View full text Add to dashboard Cite

show abstract

“…The power transmission of the oil pump and motor is illustrated in Figure 2. By calculating the power loss of the three modes, the single-motor dual-pump integrated mode is determined [14]. The hydraulic system of mass-produced cars in the world includes numerous modes such as Prius, Malibu, Lexus, and Trumpchi.…”

Section: Introductionmentioning

confidence: 99%

Design of Gerotor Pump and Influence on Oil Supply System for Hybrid Transmission

et al. 2021

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Electric continuously variable transmission (E-CVT) is a vital part of the automobile in order to enhance the power coupling. The oil pump is an important power source component in the hybrid transmission system. Its efficiency exerts a significant impact on the efficiency of the oil supply system and even the hybrid transmission system. In this study, a gerotor pump is designed in line with the requirements of a certain type of hybrid electric vehicle. A Non-dominated Sorting Genetic Algorithm II (NSGA-II) genetic algorithm was employed to optimize the rotor tooth profile. The proportional-derivative (PD) control of the oil supply system was realized to lower the functional error of the oil supply system based on the AMESim simulation platform. In addition, the prototype test was performed to verify the rationality of the design.

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“…However, the conventional DC motors are less used due to their brushed system. In [6,7], a permanent magnet motor (PMSM) for such a transmission oil pump was presented. In [8], the authors designed and designed and compared, in terms of the performance and cost, two PMSMs with different topologies used for oil pumps.…”

Section: Introductionmentioning

confidence: 99%

Zero-Airgap Induction Motor Used to Drive a Transmission Oil Pump

et al. 2020

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In this paper, we propose a novel study concerning the future use of a zero-airgap induction motor in applications related to transmission oil pumps. The name of the machine comes from the fact that the rotor touches the stator as it spins. The use of such an eccentric motor provides the possibility to remove the mechanical part that is typically found in the transmission oil pump, increasing its efficiency in this way. We focused on determining the optimum variant of a zero-airgap small power induction motor from the point of view of the electrical and mechanical performance. As such, 18 topologies of induction motors with various numbers of pole pairs and rotor bars were designed and numerically analyzed. For the best variant from each category, different eccentricities were considered to evaluate this effect over the performances of the motors. For the best candidate, various analyses were performed in order to demonstrate the validity of this solution for the proposed application. Elements regarding the thermal analysis of this structure are also presented here.

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Electric oil pump design of hybrid continuously variable transmission

Cited by 5 publications

References 21 publications

System‐level optimal design process of inverter‐fed BLAC motor used for 12–48 V integrated electric brake system

System‐level optimal design process of inverter‐fed BLAC motor used for 12–48 V integrated electric brake system

Design of Gerotor Pump and Influence on Oil Supply System for Hybrid Transmission

Zero-Airgap Induction Motor Used to Drive a Transmission Oil Pump

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