Development and Simulation of a Type of Four-Shaft ECVT for a Hybrid Electric Vehicle

Zhang, Yong; Ma, Xuerui; Yin, Chengliang; Yuan, Shifei

doi:10.3390/en9030141

Cited by 7 publications

(6 citation statements)

References 23 publications

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“…The plant model includes the power components' static characteristics, planetary gear sets' kinetics, vehicle dynamics, and battery, which are also respectively validated in previous research work [22,24,30].…”

Section: Results and Analysismentioning

confidence: 99%

Multi-Objective Optimization Considering Battery Degradation for a Multi-Mode Power-Split Electric Vehicle

Zhang

Yin

et al. 2017

Energies

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A multi-mode power-split (MMPS) hybrid electric vehicle (HEV) has two planetary gearsets and clutches/grounds which results in several operation modes with enhanced electric drive capability and better fuel economy. Basically, the battery storage system is involved in different operation modes to satisfy the power demand and minimize the fuel consumption, whereas the complicated operation modes with frequent charging/discharging will absolutely influence the battery life because of degradation. In this paper, firstly, we introduce the solid electrolyte interface (SEI) film growth model based on the previous study of the battery degradation principles and was verified according to the test data. We consider both the fuel economy and battery degradation as a multi-objective problem for MMPS HEV by normalization with a weighting factor. An instantaneous optimization is implemented based on the equivalent fuel consumption concept. Then the control strategy is implemented on a simulation framework integrating the MMPS powertrain model and the SEI film growth map model over some typical driving cycles, such as New European Driving Cycle (NEDC) and Urban Dynamometer Driving Schedule (UDDS). Finally, the result demonstrates that these two objectives are conflicting and the trade-off reduces the battery degradation with fuel sacrifice. Additionally, the analysis reveals how the mode selection will reflect the battery degradation.

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Section: Results and Analysismentioning

confidence: 99%

Multi-Objective Optimization Considering Battery Degradation for a Multi-Mode Power-Split Electric Vehicle

Zhang

Yin

et al. 2017

Energies

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“…The small sun gear and the carrier of the Ravigneaux gearset are connected to brakes individually so that different torque vectoring effects can be controlled by the engagement of the brakes. The speed relation between each gear in the Ravigneaux gearset can be visualized in the lever diagram as shown in Figure 4, and can be calculated via Equations (1) and (2) [17,18], in which ωr, ωc, ωsl, and ωss are the rotating speed of the ring gear, carrier, large sun gear, and small sun gear, respectively. iss is the gear ratio between the ring gear and the small sun gear, as presented in Equation (3), and isl is the gear ratio between the ring gear and the large sun gear, as shown in Equation (4), where Zr, Zss and Zsl are the number of teeth on the ring gear, small sun gear, and large sun gear respectively.…”

Section: Design Of New Torque Vectoring Differentialmentioning

confidence: 99%

Design and Analysis of a New Torque Vectoring System with a Ravigneaux Gearset for Vehicle Applications

Chen

Chang

et al. 2017

Energies

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Abstract:The purpose of this research is to develop a new torque vectoring differential (TVD) for vehicle applications and investigate its effect on vehicle dynamic control. TVD is a technology that is able to distribute the engine torque to the left and right driving wheels at different ratios so that the yaw motion control can be realized. Attention has been paid to this technology in recent years because of its potential to improve the vehicle performance and driving safety. In this study, a new TVD design with a Ravigneaux gearset was developed. This new design is able to use only one pair of gearsets to generate two different speed ratios, and the weight and volume of the system can be reduced. To execute the research, current TVD designs were analyzed and their design principles were clarified. Next, a new TVD design with Ravigneaux gearset was proposed. Then the connecting manner and the gear ratio of the Ravigneaux gearset were discussed. The dynamic equation of the system was then derived and the operation of the system was simulated in a MATLAB program. Further simulation was performed with a vehicle dynamic model in SimulationX to demonstrate the effect of the new system. The results of this study show the potential of building a new TVD with a Ravigneaux gearset and can be helpful for further system development.

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“…In recent years, several scholars have also applied it to the transmission scheme design of E-CVT for seriesparallel HEV. 21,22 In order to explain the operating characteristics of the IMFM-PMM, the following assumptions are made:…”

Section: Characteristics Analyses Of the Hmfm-bdmpmmentioning

confidence: 99%

“…In recent years, several scholars have also applied it to the transmission scheme design of E-CVT for series-parallel HEV. 21,22…”

Section: Characteristics Analyses Of the Hmfm-bdmpmmentioning

confidence: 99%

Optimized design and performance analysis of a magnetic-field modulated brushless dual-mechanical port motor with Halbach array permanent magnets

2014

Advances in Mechanical Engineering

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In order to develop an electrical continuously variable transmission (E-CVT) to replace mechanical power coupling equipment applied in series-parallel hybrid electric vehicle (HEV), this paper proposes a magnetic-field modulated brushless dual-mechanical port motor with Halbach array permanent magnets, which has a more compact structure. The operating characteristics are analyzed by the lever analogy. It is concluded that the motor can realize the speed and torque decoupling between the engine and the wheel, which meet multi-mode operation requirements for HEV. To realize the multi-objective design of torque output, torque ripple and usage amount of permanent magnets, an optimization scheme combined parameter sensitivity with response surface methodology is adopted. The trade-offs among the optimization objectives are considered, then the key structural parameters and its optimal values are efficiently determined. Based on a two-dimensional model, the electromagnetic performances are simulated and analyzed. The results show that, after the parameters optimization, the no-load back electromotive force (EMF) has better sinusoidal characteristic, and the torque ripples and cogging torque peaks of the motor have been significantly reduced. Furthermore, a prototype motor is tested. The experimental results are consistent with the simulation results, which demonstrates the validity of the proposed structure and parameter optimization method.

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Development and Simulation of a Type of Four-Shaft ECVT for a Hybrid Electric Vehicle

Cited by 7 publications

References 23 publications

Multi-Objective Optimization Considering Battery Degradation for a Multi-Mode Power-Split Electric Vehicle

Multi-Objective Optimization Considering Battery Degradation for a Multi-Mode Power-Split Electric Vehicle

Design and Analysis of a New Torque Vectoring System with a Ravigneaux Gearset for Vehicle Applications

Optimized design and performance analysis of a magnetic-field modulated brushless dual-mechanical port motor with Halbach array permanent magnets

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