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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.2; 20051026-28; Nanjing(CN) >Theoretical Analysis and Simulation Study on the Hydraulic Transformer in Hybrid Vehicle
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Theoretical Analysis and Simulation Study on the Hydraulic Transformer in Hybrid Vehicle

机译：混合动力汽车液压变压器的理论分析与仿真研究

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摘要

The hydraulic transformer is developed under constant pressure system. It can solve the problem of driving linear load under this system without energy loss. Hydraulic transformer is regarded as a new breakthrough for extending applications of the constant pressure system. This paper explains the concept of the hydraulic transformer combined with the motor which is applied to hybrid vehicle. Firstly, it provides the characteristics, working principle and theoretical analysis of the torque including the flow and the transformation factor of the hydraulic transformer. Secondly, a new structure of the hybrid vehicle combined with hydraulic transformer is proposed. By varying the transformation ratio of the hydraulic transformer, the flow from the constant pressure system to the motor can be controlled. This design approach presents the possibilities of saving kinetic energy during the process of braking, and then recuperating the energy saved in the state of acceleration. In addition, three typical input signals were selected as speed signals to simulate the working state of the vehicle wheel by SIMULINK. The simulation result shows that the system has the advantages of quick response, high stability accuracy and good ability to track low frequency signal. The feasibility of this research work appears to be workable when put into practice. Finally, this paper ends with a preview on the applications of the hydraulic transformer.
机译：液压变压器是在恒压系统下开发的。它可以解决在该系统下驱动线性负载而无能量损失的问题。液压变压器被视为扩展恒压系统应用的新突破。本文解释了液压变压器与电动机结合在一起的概念，该概念适用于混合动力汽车。首先，它提供了扭矩的特性，工作原理和理论分析，包括液力变矩器的流量和转换系数。其次，提出了一种新的混合动力汽车与液压变压器结合的结构。通过改变液压变压器的变压比，可以控制从恒压系统到电动机的流量。这种设计方法提出了在制动过程中节省动能，然后回收在加速状态下节省的能量的可能性。此外，通过SIMULINK选择了三个典型的输入信号作为速度信号，以模拟车轮的工作状态。仿真结果表明，该系统具有响应速度快，稳定精度高，跟踪低频信号能力强的优点。付诸实践，这项研究工作的可行性似乎是可行的。最后，本文最后介绍了液压变压器的应用。

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