Control Strategy for Dual-Mode Electrical Variable Transmisson Hev during Mode Change

2014 ◽  
Vol 875-877 ◽  
pp. 1654-1660
Author(s):  
Tian Tang ◽  
Hui Liu ◽  
Li Jin Han
Keyword(s):  
Control Strategy ◽  
Hybrid Electric Vehicle ◽  
Control Algorithm ◽  
Operation Mode ◽  
Transmission Efficiency ◽  
Optimal Operation ◽  
Dual Mode ◽  
Mode Change ◽  
Vehicle Simulation ◽  
Mode Control

In this paper, a mode control strategy for a two-mode EVT hybrid electric vehicle (HEV) is proposed,considering transmission efficiency and mode change quality. First,speed and torque characteristics are analyzed by establishing relevant equations of two transmission mode. Next,the optimal operation mode is selected from the viewpoint of the transmission efficiency,when it is higher at a given speed ratio.Then,two scheme of operation sequence of clutch/brake are compared,and a control algorithm of synchronous control of two MGs and engine is suggested to reduce speed difference between both end of the clutch and torque fluctuation. A vehicle simulation based on Matlab/Simulink was performed to testify the mode change control algorithm of the dual-mode EVT HEV,and the simulation results showed that the mode control strategy for the dual-mode EVT HEV gave acceptable performance.

Hierarchical energy management strategy considering switching schedule for a dual-mode hybrid electric vehicle

2021 ◽  
pp. 095440702110297
Author(s):  
Hui Liu ◽  
Rui Liu ◽  
Riming Xu ◽  
Lijin Han ◽  
Shumin Ruan
Keyword(s):  
Fuel Consumption ◽  
Energy Management ◽  
Control Strategy ◽  
Power Distribution ◽  
Hybrid Electric Vehicle ◽  
Hierarchical Control ◽  
Management Problem ◽  
Energy Management Strategy ◽  
Dual Mode ◽  
Hybrid Electric

Energy management strategies are critical for hybrid electric vehicles (HEVs) to improve fuel economy. To solve the dual-mode HEV energy management problem combined with switching schedule and power distribution, a hierarchical control strategy is proposed in this paper. The mode planning controller is twofold. First, the mode schedule is obtained according to the mode switch map and driving condition, then a switch hunting suppression algorithm is proposed to flatten the mode schedule through eliminating unnecessary switch. The proposed algorithm can reduce switch frequency while fuel consumption remains nearly unchanged. The power distribution controller receives the mode schedule and optimizes power distribution between the engine and battery based on the Radau pseudospectral knotting method (RPKM). Simulations are implemented to verify the effectiveness of the proposed hierarchical control strategy. For the mode planning controller, as the flattening threshold value increases, the fuel consumption remains nearly unchanged, however, the switch frequency decreases significantly. For the power distribution controller, the fuel consumption obtained by RPKM is 4.29% higher than that of DP, while the elapsed time is reduced by 92.53%.

A Dual Mode Control Strategy of SMES for Multifunctional Applications

2011 ◽  
Vol 225-226 ◽  
pp. 987-991 ◽  
Author(s):  
Wen Yong Guo ◽  
Li Ye Xiao ◽  
Shao Tao Dai
Keyword(s):  
Control Strategy ◽  
High Efficiency ◽  
Reactive Power ◽  
Magnetic Energy ◽  
Storage System ◽  
Energy Storage System ◽  
Dual Mode ◽  
Power Fluctuation ◽  
Current Harmonics ◽  
Mode Control

The superconducting magnetic energy storage system (SMES) has good characteristics such as high efficiency, quick response, no deteriorations, etc. However it is still far from wide application. The main obstacle is due to its high cost. One of the most effective ways to reduce the cost of SMES is to make it multifunctional. In this paper, a dual mode control strategy is proposed. With the proposed control strategy, The SMES can compensate voltage dip, current harmonics, reactive power, and active power fluctuation with a simple topology. The efficacy of the proposed control strategy is verified by simulation results.

Powertrain Control of Parallel Hybrid Electric Vehicles via Extremum Seeking Algorithm

2010 ◽  
Author(s):  
Erkin Dinc¸men ◽  
I˙smail M. C. Uygan ◽  
Bilin Aksun Gu¨venc¸ ◽  
Tankut Acarman
Keyword(s):  
Hybrid Electric Vehicle ◽  
Control Algorithm ◽  
Combustion Engine ◽  
Operation Mode ◽  
Extremum Seeking ◽  
Powertrain Control ◽  
Parallel Hybrid ◽  
Hybrid Electric ◽  
Upper Level ◽  
Battery Discharge

A control algorithm for a parallel hybrid electric vehicle is proposed in this paper. An upper level controller chooses vehicle operation mode such as regenerative braking, electric motor only, combustion engine only, engine+motor in battery discharge or engine+motor in battery charge modes. In engine+motor mode, optimum torque distribution between the engine and the motor is determined via extremum seeking algorithm that searches maximum drivetrain efficiency. Simulations are given to illustrate the effectiveness of the proposed control algorithm.

Dual Mode Braking System Design of a HEV

2011 ◽  
Vol 128-129 ◽  
pp. 834-841 ◽  
Author(s):  
Yu Tao Luo ◽  
Qing Yong Sun ◽  
Di Tan
Keyword(s):  
Control Strategy ◽  
Hybrid Electric Vehicle ◽  
Regenerative Braking ◽  
Fuel Saving ◽  
Dual Mode ◽  
Braking System ◽  
Driving Cycles ◽  
Electric Control ◽  
Braking Distance ◽  
Regenerative Energy

Hybrid electric vehicle (HEV) is a good approach to solve the energy shortage and emission pollution issues and regenerative energy braking (REB) is one of its prime approaches for fuel saving. In this paper, a regenerative-electro-hydraulic braking system called dual mode braking system (DMBS), is proposed. The braking-by-wire technology is adopted for automatic electric control and cooperating with regenerative braking. This system can be easily converted to traditional hydraulic braking in case of fault occurs in the electro-hydraulic subsystem or some other reasons. The architecture is achieved with as less modification as possible of the original electro-hydraulic braking system. And the control strategy based on automobile braking regulations of the Economic Committee for Europe (ECE) is brought forward. Some simulations under given initial speeds and driving cycles are carried out to evaluate the effectiveness and REB efficiency. The simulating results indicate that the DMBS can work properly and can achieve a relative good performance on braking distance and regenerative energy.

Control strategy for clutch engagement during mode change of plug-in hybrid electric vehicle

2017 ◽  
Vol 18 (5) ◽  
pp. 901-909 ◽  
Author(s):  
Kyuhyun Sim ◽  
Sang-Min Oh ◽  
Choul Namkoong ◽  
Ji-Suk Lee ◽  
Kwan-Soo Han ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Control Strategy ◽  
Hybrid Electric Vehicle ◽  
Mode Change ◽  
Clutch Engagement ◽  
Hybrid Electric
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