電動車動力系統設計與模擬

Design and Simulation of Electric Vehicle Power Systems

劉俊宏(Jyun-Hong Liou)

指導教授 ： 許坤寶

國立虎尾科技大學/工程學院/機械與機電工程研究所/碩士(2011年)

摘要

本文主要係提出一種新式電動車傳動系統，並完成電動車動力系統的設計及模擬。本研究使用兩個馬達與一組自由度為二的行星齒輪組，搭配控制器，形成電子式無段變速系統。此系統是以齒輪傳遞動力，有較高的機械效率，且電動車性能表現與馬達有較高的匹配度，設計也較靈活。
本研究首先以行星齒輪組為架構，經由運動分析和功流分析篩選出可用的電子式無段變速系統之設計構想，接著應用Matlab/Simulink建構系統數學模式包括傳動系統、車輛參數、控制模式、及行車阻力等，進行馬達操作點的模擬，以得到新型構想設計之細部尺寸，最後以Solid works繪製雛型機匯入ADAMS做電動車動力系統之動態模擬。模擬結果顯示，本研究所提出之電子式無段變系統，可容易的控制馬達操作點至高效率區，避開馬達轉速低效率較差之情況，增加電動車低速時行駛效率，減少電動車之電能消耗。

關鍵字

電動車動力系統 ； 電子式無段變速系統 ； 行星齒輪組 ； 煞車回充

並列摘要

This paper proposed a novel transmission system for electric vehicles application and performed the simulation of the power train system. In this research, we use two electric motors, a planetary gear train with two degrees of freedom, and a controller, an electronic continuously variable transmission (e-CVT) is accomplished. This transmission system is composed of gear train, thereby this system possesses higher efficiency and easier match with the electric motor, and design of the power train system is also more flexible.
In this research, the planetary gear train was used to form the e-CVT system first and the acceptable design concepts are obtained based on kinematic and power flow analysis. Then the operation points of the electric motor was simulated by using software Matlab/Simulink to build the mathematical model including the transmission system, vehicle parameters, control mode, and driving load. Based on the simulation results, the number of teeth of the transmission system is selected. Finally, we use the drawing software Solid Works to draw the prototype of the proposed e-CVT and import to simulation software of ADAMS to achieve the simulation of the vehicle power train system. As simulation results, using the proposed e-CVT in this research the operation points of the electric motor is easily to control to the higher efficiency area and avoid to the lower efficient area during low vehicle speed.

並列關鍵字

vehicle power system ； e-CVT ； planetary gear train ； brake recharge

參考文獻

[4] Sheu K-B, “Conceptual design of hybrid scooter transmissions with planetary gear-trains,” Applied Energy 84, pp.526-541, 2007.

[5] Sheu K-B, “Simulation for the analysis of a hybrid electric scooter powertrain,” Applied Energy 85, pp.589-606, 2008.

[6] A. Emadi, “Derivation and Experimental Validation of a Power-Split Hybrid Electric Vehicle Model,” IEEE Transactions on Vehicular Technology, Vol.55, No. 6, November 2006.

[7] Sheu K-B, “Conceptual design of hybrid scooter transmissions with planetary gear-trains,” Applied Energy, pp.526-541, 2007.

[8] L. W. Tsai, “A Novel Parallel Hybrid Transmission,” American Society of Mechanical Engineers, Vol. 123, No. 7, pp. 162-168, 2001.