Simulation of Hybrid Power-Split System

2017 ◽  
pp. 75-116 ◽  
Author(s):  
Xiaohua Zeng ◽  
Jixin Wang
Keyword(s):  
Hybrid Power ◽  
Power Split ◽  
Split System

Robust augmented H∞ shift control strategy for power-split system with a two-speed AMT gearbox of a heavy commercial vehicle

2020 ◽  
pp. 095440702097709
Author(s):  
Xiaohua Zeng ◽  
Zhenwei Wang ◽  
Dafeng Song ◽  
Dongpo Yang
Keyword(s):  
Control Strategy ◽  
Commercial Vehicle ◽  
Kinetic Equations ◽  
Substantial Improvement ◽  
Transmission System ◽  
Power Sources ◽  
Shift Control ◽  
Power Split ◽  
Heavy Commercial Vehicle ◽  
Split System

The coordination control of a transmission system has gradually attracted more attention with the development of hybrid electric vehicles. However, nonlinear coupling of multiple power sources, superposition of different dynamic characteristics in multiple components, and withdrawal and intervention for a power-split powertrain with a two-speed automated manual transmission (AMT) gearbox can cause jerk and vibration of the transmission system during the shift, which has higher requirements and challenges for the overall performance improvement of the system. This paper designs a novel, robust, augmented H∞ shift control strategy for a power-split system with a two-speed AMT gearbox of a heavy commercial vehicle and verifies the strategy’s effectiveness with simulations and experiments. First, the dynamic plant model and kinetic equations are established, and the shift is divided into five stages to clearly reveal the jerk and vibration problem. Based on augmented theory, a robust H∞ shift control strategy is proposed. Shift coordination is transformed into a speed tracking problem, and state variable and disturbance are reconstructed to obtain a new augmented system. Simulation and hardware-in-the-loop test are carried out to verify the effectiveness of the strategy, which mainly includes simulation of pneumatic actuator and H∞ control strategy. Results show that the proposed H∞ control strategy can greatly reduce the jerk of the transmission system. The jerk produced by the proposed strategy is decreased from 20.4 to 4.07 m/s3, leading to a substantial improvement of 80%. Therefore, the proposed strategy may offer a theoretical reference for the actual vehicle controller during the shift.

Development of Half-Toroidal IVT System for Next Generation~Power Transmission Efficiency of Power-Split System

2005 ◽  
Author(s):  
Takashi Imanishi ◽  
Toshiro Toyoda ◽  
Takumi Shinojima ◽  
Eiji Inoue ◽  
Hirohisa Tanaka
Keyword(s):  
Power Transmission ◽  
Transmission Efficiency ◽  
Next Generation ◽  
Power Split ◽  
Generation Power ◽  
Split System

Single Motor Mechanical Power-Split Transmission for Hybrid Racing Cars

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
R. Ranjan ◽  
S. Srinath ◽  
A. Dhakar ◽  
B. Rajasai ◽  
S. Nagaraj
Keyword(s):  
Electric Motor ◽  
Hybrid Electric Vehicles ◽  
Role Reversal ◽  
Lower Efficiency ◽  
Ic Engine ◽  
Power Train ◽  
Power Split ◽  
Seamless Transition ◽  
Parallel Mode ◽  
Split System

A hybrid vehicle derives its power from two or more distinct sources such as an internal combustion (IC) engine and an electric motor. Based on the mechanical architecture, Hybrid Electric Vehicles can be divided into three categories: parallel hybrids, series hybrids, and power-split hybrids. Parallel hybrids require frequent role reversal due to restrictions on motor power, whereas series hybrids lead to lower efficiency of the whole power train. The power-split hybrids combine the advantages of these two configurations by using one IC engine and two motors. The main objective of this paper is to design a transmission system for a hybrid racing car which is powered by an IC engine and a single electric motor which are arranged so as to represent a unique power-split system. This configuration reduces the need of one motor and allows seamless transition between engine-only with regeneration mode, motor only mode and parallel mode.

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