混合电动车辆复式电力机械无级变速器的控制策略  

Control Strategy For a Dual-Mode Electromechanical Infinitely Variable Transmission For Hybrid Electric Vehicles

作　　者：N-D Kim J-M Kim H-S Kim 谷雨 

机构地区：[1]School of Mechanical Engineering,Sungkyunkwan University Suwon

出　　处：《传动技术》2010年第2期20-32,共13页Drive System Technique

摘　　要：本文为双型电力机械无级变速器(EVT)混合电动车辆推荐了一个操纵策略,首先,进行网络分析估算复式EVT与速比有关的效率,由网络分析发现,当功率循坏发生在电驱动变速器时,EVT效率降低,而EVT在速比范围内工作时,可提供相对高的系统的效率,这就要求操纵策略应从动力系总效率观点出发而不只是内燃机的热效率。为了开发复式EVT的操纵策略,采用反向基础控制求出包括EVT的HEV动力系的动力学方程式,以及指定马达转矩控制算法。在HEV动力系动态模型的基础上,采用Cruise和MAT-LAB/Simulink开发了一个HEV模拟器。该模拟结果指出,本文推荐的操纵策略可以操纵发动机在预定速比范围内具有相对高的效率,它比常规控制方法提供的燃油经济性有所改进。这是基于变速器效率可以用于HEV复式EVT设计要求的操纵策略。An operating strategy is proposed for a sion（EVT） hybrid electric vehicle（HEV）. First, dual-mode electromechanical, infinitely variable transmisnetwork analysis is performed to evaluate the dual-mode EVT efficiency with respect to the speed ratio. It is found from the network analysis that the EVT efficiency decreases when the power circulation occurs along the electric variator and the EVT should be operated in the speed ratio region that provides a relatively high system efficiency, which requires an operating strategy from the viewpoint of the overall powertrain efficiency rather than the internal combustion engine thermal efficiency. In order to develop the operating strategy of the dual-mode EVT, dynamic equations of the HEV powertrain including the EVT are obtained and the motor torque control algorithm is designed using inversion-based control. To evaluate the performance of the operating strategy, an HEV simulator is developed on the baiss of the dynamic models of the HEV powertrain using Cruise and MATLAB/Simulink. The sim- ulation results indicate that the operating strategy proposed in this study is able to operate the engine in the desired speed ratio range having a relatively high EVT efficiency, which provides improved fuel economy compared with conventional control. It is expected that the operating strategy based on the transmission effeciency can be used effectively in the design of the dual-mode EVT for HEV application.

关 键 词：电力机械 无级变速器 复式 混合电动车辆 网络分析 

分 类 号：U463.212[机械工程—车辆工程]