Configuration design and screening of multi-mode double-planetary-gears hybrid powertrains

2022 ◽  
pp. 1-18
Author(s):  
Tao Deng ◽  
Zhihan Gan ◽  
Hui Xu ◽  
Changjun Wu ◽  
Yuxiao Zhang ◽  
...  
Keyword(s):  
Comprehensive Evaluation ◽  
Screening Method ◽  
Mode Switching ◽  
Power Performance ◽  
Performance Potential ◽  
Hybrid Powertrain ◽  
Vehicle Performance ◽  
Power Sources ◽  
Hybrid Powertrains ◽  
Multi Mode

Abstract Hybrid powertrains with planetary gearset(PG) have been widely used. However, there are few types of powertrains in use, more powertrains have not been found. Based on the principle of organic chemistry, a design and screening method of multi-mode 2-PGs hybrid powertrain is proposed, which is divided into five stages. Firstly, powertrains are expressed in the form of molecules. Secondly, powertrains split into the libraries of PGs and power sources. The power sources can be mutually identified to construct new library. Thirdly, the mode switching rules are defined to screen power source group. Fourthly, two libraries interact with each other to promote the generation of new molecules, namely, new powertrains. And the more modes, the greater the vehicle performance potential. Powertrains are screened with mode richness theory firstly. Finally, taking the comprehensive evaluation of power performance and fuel economy as the optimal standard, powertrains are screened and evaluated twice. Through the method, hybrid powertrains with smooth mode switching, simpler structure, and optimal power and economy can be obtained.

Modeling and Control of New Multi-Mode Plug-in Hybrid Electric Vehicle

2019 ◽  
Author(s):  
Abhinandan Raut ◽  
Suryaji Phalke ◽  
Diane Peters
Keyword(s):  
Electric Vehicle ◽  
Energy Management ◽  
Fuel Economy ◽  
Hybrid Electric Vehicle ◽  
Hybrid Powertrain ◽  
Power Sources ◽  
Full Size ◽  
Wide Range ◽  
Hybrid Electric ◽  
Multi Mode

Abstract Fuel economy and emission standards for internal combustion engine (ICE) vehicles lead to emergence of hybrid powertrain mechanisms. Hybrid powertrains can enable significant fuel economy improvements without sacrificing vehicle performance or utility. This requires optimization of engine operation, regenerative braking, and use of a wide range of possible combinations of engine and battery usage. The multi-mode hybrid powertrain in this paper combines many options to meet a complex driving requirement while maintaining the desired fuel economy. In this paper, a systematic design methodology is used to design a full-size hybrid vehicle with multiple components. This involves the modeling, simulation and development of optimal energy management strategy. This vehicle (full size car) has dual battery, dual fuel V6 engine with cylinder deactivation and bi-directional power flow in and from dual motor/generator. The design includes multiple gearboxes to connect these pieces. The vehicle model allows many degrees of freedom including various modes of operation depending upon the combination of degree of driver involvement, vehicle power requirement and optimized fuel economy resulting in automatic switching between modes. This model is tested for different Environmental Protection Agency (EPA) driving cycles. By integrating all components of this hybrid electric vehicle (HEV) and the highly coordinated energy management control system that performs optimum blending of torque, speed, and power from multiple power sources, the benefit from this hybridization is maximized.

scholarly journals Control Strategy of Mode Transition with Engine Start in a Plug-in Hybrid Electric Bus

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2989 ◽  
Author(s):  
Yang ◽  
Zhang ◽  
Zhang ◽  
Tian ◽  
Hu
Keyword(s):  
Control Strategy ◽  
Transition Process ◽  
Structural Features ◽  
Driving Performance ◽  
The State ◽  
Switching Process ◽  
Mode Switching ◽  
Mode Transition ◽  
Power Sources ◽  
Hybrid Electric

Torque coordinated control of the relevant power sources has an important impact on the vehicle dynamics and driving performance during the mode transition of the hybrid electric vehicles(HEVs). Considering the dynamic impact problem caused by mode transition, this paper, based upon the structural features of axially paralleled hybrid power system, introduces the bumpless mode switching control theory to analyze multi-mode transition. Firstly, the state transition process is abstracted as the state space transition problem of hybrid system. Secondly the mode transition is divided into four sub-states, and the state model of each sub-state is established. Thirdly, taking the cost functions as the optimization objective, the state switching process is solved, and the control vectors of each switching process are obtained. Simulation and experimental results show that the proposed control strategy can effectively suppress torque fluctuation, avoid longitudinal acceleration impact, and improve driving performance.

scholarly journals Multi-mode switching control of hybrid electromagnetic suspension based on road conditions adaptation

2020 ◽  
Vol 58 (3) ◽  
pp. 697-710
Author(s):  
Xiangpeng Meng ◽  
Renkai Ding ◽  
Zeyu Sun ◽  
Ruochen Wang ◽  
Long Chen
Keyword(s):  
Switching Control ◽  
Mode Switching ◽  
Electromagnetic Suspension ◽  
Multi Mode

Power Management for a Fuel Cell/Battery/Supercapacitor Hybrid Locomotive

2020 ◽  
Author(s):  
Qishen Zhao ◽  
Tianheng Feng ◽  
Dongmei Chen ◽  
Wei Li
Keyword(s):  
Fuel Cell ◽  
Power Management ◽  
Management Strategy ◽  
Stochastic Dynamic ◽  
Hybrid Powertrain ◽  
Power Sources ◽  
Management Framework ◽  
Power Management Strategy ◽  
Driving Cycles ◽  
Efficiency Performance

Abstract Electrification of locomotive with hybridized fuel-cell, battery and supercapacitor has drawn much attention from both the academia and industry. Unlike traditional powertrain, hybrid powertrain consists of multiple power sources with a complex drivetrain structure, various efficiency performance, and different dynamics. Therefore, it is necessary to develop a power management strategy to make sure each power source operates under a quasi-optimal condition and maximize the overall powertrain efficiency. This paper presents the development of a power management framework for a novel hybrid locomotive consisting of PEM fuel cell, battery, and supercapacitor. Both the equivalent consumption management strategy (ECMS) and the stochastic dynamic programming (SDP) are applied to solve for the optimal power split strategy. The resulted power management strategy is presented in the form of policy maps, which makes it convenient for real-time in-vehicle implementations. Simulation results indicate that the SDP demonstrates advantages over the ECMS in terms of equivalent hydrogen consumption over typical locomotive driving cycles.

scholarly journals Benefit Assessment of Skidder Powertrain Hybridization Utilizing a Novel Cascade Optimization Algorithm

2020 ◽  
Vol 12 (24) ◽  
pp. 10396
Author(s):  
Juraj Karlušić ◽  
Mihael Cipek ◽  
Danijel Pavković ◽  
Željko Šitum ◽  
Juraj Benić ◽  
...  
Keyword(s):  
Fuel Efficiency ◽  
Management Control ◽  
Electrical Machine ◽  
Hybrid Powertrain ◽  
Greenhouse Gases Emissions ◽  
Open Questions ◽  
Purchase Cost ◽  
Hybrid Powertrains ◽  
Fuel Efficiency Improvement ◽  
Battery Energy

Over the last decade, off-road vehicles have been increasingly hybridized through powertrain electrification in terms of additional electrical machine-based propulsion and battery energy storage, with the goal of achieving significant gains in fuel economy and reductions in greenhouse gases emissions. Since hybrid powertrains consist of two or more different energy sources and may be arranged in many different configurations, there are many open questions in their design and powertrain energy management control, which may have influence on the hybridized powertrain purchase cost and efficiency. This paper presents simple backward optimization models of conventional and hybrid cable skidder powertrains. These models are then used in the optimization of control variables over one forest path in order to find the minimum possible fuel consumption. The optimization results show that 15% fuel efficiency improvement in winching and skid trail driving can be achieved with the selected hybrid powertrain. With that improvement, main hybrid drive components can be paid off in 13 years.

Design and locomotivity analysis of a novel deformable two-wheel-like mobile mechanism

2020 ◽  
Vol 47 (3) ◽  
pp. 369-380 ◽  
Author(s):  
Qianqian Zhang ◽  
Yezhuo Li ◽  
Yan-An Yao ◽  
Ruiming Li
Keyword(s):  
Design Methodology ◽  
Mode Switching ◽  
Main Body ◽  
Dynamics Analysis ◽  
Kinematics Analysis ◽  
Content Type ◽  
Physical Prototype ◽  
Dynamic Obstacle ◽  
Rolling Mode ◽  
Multi Mode

Purpose The purpose of this paper is to propose a deformable two-wheel-like mobile mechanism based on overconstrained mechanism, with the abilities of fast rolling and obstacle surmounting. The drive torque of the multi-mode motions is generated by self-deformation. Moreover, the analyses of feasibility and locomotivity of two mobile modes are presented. Design/methodology/approach The main body of the two-wheel-like mobile mechanism is a kind of centrally driven 4 R linkages. The mobile mechanism can achieve the capabilities of fast rolling and obstacle surmounting through integrating two mobile modes (spherical-like rolling mode and polyhedral-like obstacle-surmounting mode) and can switch to the corresponding mode to move or surmount obstacles. The mobility and kinematics of the mobile modes are analyzed. Findings Based on the results of kinematics analysis and dynamics analysis of the wheel-like mechanism, the spherical-like rolling mode has the capability of fast rolling, and the polyhedral-like obstacle-surmounting mode has the capability of surmounting different obstacle heights by two submodes (quasi-static obstacle-surmounting submode and dynamic obstacle-surmounting submode). The proposed concept is verified by experiments on a physical prototype. Originality/value The work presented in this paper is a novel exploration to apply bar linkages in the field of scout. The two-wheel-like mobile mechanism improves the torque imbalance of bar linkages by centrally driven method, removes the rear support structures of the traditional two-wheeled mechanisms by self-deformation and increases the height of obstacle surmounting by mode switching angle.

scholarly journals Multi-Mode Switching Control of the EPS With Hybrid Power Supply

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 4329-4337 ◽  
Author(s):  
Bin Tang ◽  
Yingqiu Huang ◽  
Di Zhang ◽  
Haobin Jiang
Keyword(s):  
Power Supply ◽  
Switching Control ◽  
Mode Switching ◽  
Hybrid Power ◽  
Multi Mode

Nonlinear Tracking Control of a Transient Hydrostatic Dynamometer for Hybrid Powertrain Research

2010 ◽  
Author(s):  
Yu Wang ◽  
Zongxuan Sun ◽  
Kim A. Stelson
Keyword(s):  
Tracking Control ◽  
Tracking Error ◽  
Weight Ratio ◽  
Pressure Control ◽  
State Feedback Control ◽  
Hybrid Powertrain ◽  
Power Sources ◽  
Model Based ◽  
Nonlinear Tracking ◽  
High Bandwidth

With its superior power to weight ratio, the hydrostatic dynamometer is an ideal candidate for transient engine or powertrain testing. Given its high bandwidth, the hydrostatic dynamometer can be further used as a virtual power source to emulate the dynamics of the automotive hybrid power sources. This will greatly expedite the investigation of various hybrid powertrain architectures and control methodologies without building the complete hybrid system. This paper presents the design, modeling, nonlinear tracking control and experimental investigation of a transient hydrostatic dynamometer. An electronically controlled load sensing mechanism is employed to facilitate the supply pressure control, and a two-stage high bandwidth valve is used as the primary actuator for the loading pressure control. To enable the model-based control, a 9th order physics-based model is formulated and then, identified and validated with experimental data. On this basis, model-based nonlinear tracking controls are designed for this multivariable nonlinear system to realize the precise engine speed tracking. A nonlinear model-based inversion plus PID control is first implemented and then, a state feedback control via feedback linearization is designed for reference tracking. Experimental results demonstrate precise tracking performance with less than 5% tracking error for both transient and steady state operations.

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