Geometrical optimization of half toroidal continuously variable transmission using particle swarm optimization

Delkhosh, M.; Foumani, Mahmoud Saadat; Boroushaki, Mehrdad; Ekhtiari, Mostafa; Dehghani, Majid

doi:10.1016/j.scient.2011.08.005

Cited by 23 publications

(16 citation statements)

References 6 publications

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“…If a CVT is employed as the vehicle's transmission, there will be another shortcoming: the EACS does not take into account the transmission's e ciency in the process of de ning the ICE's optimum operation point. The CVT's e ciency depends on its operating condition (contrary to the conventional transmission) [31][32][33]. Therefore, it is possible that, for the selected ICE operation point (by EACS), the CVT e ciency is low, which results in the poor overall e ciency of the vehicle's powertrain.…”

Section: Modi Ed Eacs (M-eacs)mentioning

confidence: 99%

An Optimal Control Strategy for Parallel Hybrid Electric Vehicles

Delkhosh

Foumani

2018

Scientia Iranica

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This paper proposes a new Power Management Strategy (PMS) for parallel hybrid electric vehicles equipped with Continuously Variable Transmission (CVT). The proposed PMS is established on the basis of Electric Assist Control Strategy (EACS) and Equivalent Consumption Minimization Strategy (ECMS). This control approach is based on maintaining the battery energy within a recommended range, considering the CVT e ciency in selecting the engine operating point, and nding the best power split between the engine and electric motor at certain moments of the driving. In order to evaluate the e ectiveness of this scheme, it is compared with EACS, a modi ed version of EACS and ECMS. It is shown that, in all of the studied driving cycles, the proposed PMS is superior to the considered rival strategies in terms of fuel consumption and, also, HC and CO emissions.

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Section: Modi Ed Eacs (M-eacs)mentioning

confidence: 99%

An Optimal Control Strategy for Parallel Hybrid Electric Vehicles

Delkhosh

Foumani

2018

Scientia Iranica

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“…The overall average power efficiency of this transmission is taken into account by scaling the load torque on the transmission shaft, as follows: where η CV T is the average efficiency of the CVT, which typically ranges from 89% to 94% Miller (2003). In our work the value of average efficiency of the toroidal CVT, η CV T = 93%, is used Heath (2007); Delkhosh et al (2011). The final drive ratio of the CVT is controlled to be…”

Section: Permanent Magnet Synchronous Motor (Pmsm)mentioning

confidence: 99%

Dynamic modeling platform for series hybrid electric vehicles

Evangelou

Shabbir

2016

IFAC-PapersOnLine

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This paper introduces a simulation model that can be used to develop and test designs and control systems for hybrid electric vehicles (HEVs). The work involves a novel simulating platform, developed in Simulink, where each component of a series HEV is developed using a first-principles approach in a modular fashion, validated by available experimental data and then integrated to form a coupled nonlinear dynamic model. The vehicle model is capable to act as a platform for the design of supervisory control systems (SCSs) that optimize the energy flow in the powertrain. Simulations with two distinct SCSs and two driving cycles are used to analyze the vehicle performance under varying driving and operating conditions. The results demonstrate the applicability of the model for realistic prediction of both vehicle behavior and component energy losses, design optimization and control system design.

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“…In the present study, PSO is used to optimize the control strategies. This method is used widely in various elds because of its high rate of convergence [33]. In this method, initial values of optimization parameters are selected randomly.…”

Section: Optimizationmentioning

confidence: 99%

A modified control strategy for parallel hybrid electric vehicles equipped with continuously variable transmission

2016

Self Cite

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Abstract. This paper aims to establish a control strategy for parallel hybrid electric vehicles equipped with full-toroidal Continuously Variable Transmission (CVT). First, the advantages of CVT are elucidated. Afterwards, a modi ed control strategy on the base of Baseline static Control Strategy (BCS) is proposed. Employing this strategy, in some moments, the engine operates in its fuel-optimal point to decrease the vehicle Fuel Consumption (FC). It is demonstrated that the modi cations in BCS are applicable using a CVT as the power train. In order to investigate the implemented modi cation, an optimization on the proposed control strategy and BCS in SC03 driving cycle is accomplished and then, the optimized control strategies are compared. It will be demonstrated that the proposed method is superior to BCS in terms of FC in SC03 driving cycle. Finally, in order to examine generality of the comparison, the optimized control strategies are compared in other driving cycles. It is revealed that the optimized state of the proposed control strategy is advantageous in these cycles.

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Geometrical optimization of half toroidal continuously variable transmission using particle swarm optimization

Cited by 23 publications

References 6 publications

An Optimal Control Strategy for Parallel Hybrid Electric Vehicles

An Optimal Control Strategy for Parallel Hybrid Electric Vehicles

Dynamic modeling platform for series hybrid electric vehicles

A modified control strategy for parallel hybrid electric vehicles equipped with continuously variable transmission

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