Power flow and efficiency analysis of multi-flow planetary gear trains

Yang, Fengli; Feng, Jianxiong; Zhang, Hongcai

doi:10.1016/j.mechmachtheory.2015.05.003

Cited by 41 publications

(17 citation statements)

References 22 publications

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“…The planetary gears can realize the mechanical connection among the engine, motor, and generator and maintain the engine working at the high efficient area by the energy control strategy. 11 The planetary gears is mainly composed of a sun wheel, a number of planet wheels, a planet carrier, and a gear ring, as shown in Figure 2. 12,13 Dynamics analysis…”

Section: Basic Structurementioning

confidence: 99%

RETRACTED: Energy control strategy of plug-in hybrid electric vehicle based on pattern recognition

Shi

Liang

Guo

et al. 2017

Advances in Mechanical Engineering

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At the request of the Publisher, the following articles have been retracted. The Advances in Mechanical Engineering Editorial Office became aware that the peer review process organised by the Guest Editors of the Special Collections Advanced Control and Analysis of Mechatronics Systems with Modelling Uncertainty and Advanced Control of Robotics and Mechatronics Systems with Nonlinearity and Modelling Uncertainty 2016 did not meet the journal's usual rigorous standards of peer review. Due to this, all articles in these Special Collections were re-reviewed by a new set of independent referees.

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Section: Basic Structurementioning

confidence: 99%

RETRACTED: Energy control strategy of plug-in hybrid electric vehicle based on pattern recognition

Shi

Liang

Guo

et al. 2017

Advances in Mechanical Engineering

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“…On the basis of equation (14), the contribution percentage of each transfer path can be expressed According to time-variant and time-invariant transfer paths of localized spalling vibration signal, the proposed method deduces the concrete calculation formula of transfer path contributions, which lays the theoretical foundation for the finite element simulation analysis.…”

Section: Contribution Theoretical Calculationmentioning

confidence: 99%

“…In case considering meshing power loss or not, Hu et al 13 used the theory of virtual work to analyze the power flow of compound planetary transfer with cone gear. Yang et al 14 reported a new method to calculate the power flow of planetary gears based on hypergraph and matrix operation. And the equations about power loss on each coupling node are presented.…”

Section: Introductionmentioning

confidence: 99%

Study of transfer path of wind turbine gearbox fault vibration signal based on power flow finite element method

Huang

Sun

Dou

et al. 2017

Advances in Mechanical Engineering

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As core components of wind power equipment, wind turbine gearboxes usually work in hostile conditions, which accounts for the increasing failure rate year by year. Therefore, the condition monitoring and fault diagnosis play a vital role in the safe operation of wind power gearboxes. Compared with ordinary gear train, wind power gearboxes have more complex transfer systems. Moreover, the vibration combination generated by multi-gears meshing and time-variant transfer paths of vibration signals increases the difficulty of wind turbine gearboxes fault diagnosis. To accurately detect the faults and analyze the fault signal transfer mechanism of planetary gearboxes, this article proposes a novel method based on power flow finite element to study transfer paths. For localized spalling of planetary gears, this article analyzes six transfer paths' contributions of the fault signal and carries on the finite element analysis to determine the dominant transfer path. By contrast, the proposed method overcomes the problems of mutual coherence and time variance requested for traditional transfer path analysis methods and reveals the changes of energy and attenuation law. The detection of dominant transfer path will greatly promote the reveal of failure mechanism and fault feature extraction for wind turbine gearboxes, which has significant academic and engineering value.

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“…The CT can be mechanical, electronic, or hydraulic. The literature is rich in studies on the efficiency of PS-CVTs [19][20][21], which have also been experimentally verified through test benches [22][23][24], or on the design of original typologies [25,26]. Depending on the particular design and characteristics of the CVT, these transmissions may lead to a power split path (type III flow, Reference [21]), in which the power bifurcates, partly going through the CVT and partly through the mechanical path (with a constant speed ratio), or recirculating power paths (type I and II, Ref.…”

Section: Introductionmentioning

confidence: 99%

Power-Split Hydrostatic Transmissions for Wind Energy Systems

2018

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In a wind turbine, if a continuously variable transmission is placed between the turbine rotor and the generator, the speed ratio can be tuned to match the variable rotor speed to the constant speed of the electric generator, thus eliminating the need to adapt the frequency to the grid. In this paper, power-split hydrostatic transmission (PS-HTS) architecture is proposed as a suitable continuously variable transmission for application to wind turbine systems. The performance of PS-HTS is modelled and compared with that of previously proposed architectures in which the hydrostatic transmission is placed in-line with traditional drives (in-line HTS). It is shown here that the PS-HTS can improve the annual energy production of a 250 kW rated power wind turbine of about 10–11% by employing a hydrostatic transmission with one-seventh the size of the one requested by in-line HTS architecture.

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Power flow and efficiency analysis of multi-flow planetary gear trains

Cited by 41 publications

References 22 publications

RETRACTED: Energy control strategy of plug-in hybrid electric vehicle based on pattern recognition

RETRACTED: Energy control strategy of plug-in hybrid electric vehicle based on pattern recognition

Study of transfer path of wind turbine gearbox fault vibration signal based on power flow finite element method

Power-Split Hydrostatic Transmissions for Wind Energy Systems

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