RISS 검색 - 국내학술지논문 상세보기

다국어 초록 (Multilingual Abstract)

Power loss optimization aiming at the high-efficiency drive of front-and-rear-induction-motor-drive electric vehicle (FRIMDEV) as an effective way to improve energy efficiency and extend driving range is of high importance.
Different from the traditional look-up table method of motor efficiency, power loss optimization of the dual- motor system based on the loss mechanism of induction motor (IM) is proposed. First of all, based on the power loss characteristic of FRIMDEV from battery to wheels, the torque distribution optimization model aiming at the minimum system power loss is put forward. Secondly, referring to d-q axis equivalent model of IM, the power loss functions of the dual-IM system are modeled. Then, the optimal torque distribution coefficient (βo) between the two IMs is derived, and the theoretical switching condition (Tsw) between the single- and dual-motor-drive mode (SMDM and DMDM) is confirmed. Finally, a dual-motor test platform is developed. The derived torque distribution strategy is verified. The influence of motor temperature on βo and Tsw are tested, and the correction models based on temperature difference are proposed. Based on the system power loss analysis, it can be confirmed that, under low load conditions, the SMDM takes priority over the DMDM, and the controller of the idling motor should be shut down to avoid the additional excitation loss. While under middle to high load conditions, even torque distribution (βo = 0.5) is preferred if the temperature difference between the two IMs is small; otherwise, βo should be corrected based on dual-motor temperatures. The theoretical Tsw derived without dealing with temperature difference is a function only of motor speed, while temperature difference correction of it should be conducted in actual operations based on motor resistance changing with temperature.

참고문헌 (Reference)

1 Yuan, X., "Torque distribution strategy for a front- and- rear- wheel- driven electric vehicle" 61 (61): 3365-3374, 2012

2 Luo, Y., "Study on the dynamics of the in-wheel motor system" 61 (61): 3510-3518, 2012

3 Duan, Q., "Stray Losses Analysis and Design of Permanent Magnet Synchronous Motor for Electric Vehicle" Shenyang University of Technology 2015

4 Zhou, F., "Research on Powertrain Parameters Design and Vehicle Control Strategy for Pure Electric Vehicle" Jilin University 2013

5 Huang, W., "Research on Matching Technique for EV Powertrain" Shandong University 2012

6 Mutoh, N., "Outstanding running performance of front- and- rearwheel-independent- drive- type electric vehicle (FRID EV) under various transient running conditions" 2971-2976, 2012

7 Chen, Z., "Optimal energy management strategy of a plug-in hybrid electric vehicle based on a particle swarm optimization algorithm" 8 (8): 3661-3678, 2015

8 Mademlis, C., "Optimal efficiency control strategy for interior permanentmagnet synchronous motor drives" 19 (19): 715-723, 2004

9 Schouten, N., "Fuzzy logic control for parallel hybrid vehicles" 10 (10): 460-468, 2002

10 Mutoh, N., "Front-andrear-wheel-independent-drive-type electric vehicle (FRID EV) taking the lead for next generation ECOvehicles" SAE 2011