|Table of Contents|

Power matching control strategy of power source for mine truck(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2015年01期
Page:
82-91
Research Field:
载运工具运用工程
Publishing date:

Info

Title:
Power matching control strategy of power source for mine truck
Author(s):
ZHENG Shu-yang JIN Chun LUO Wei-dong
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
Keywords:
mine truck power source optimization power matching AC drive hierarchical control vehicle loading fuel economy
PACS:
U463.212
DOI:
-
Abstract:
Considering that the working points of mine truck engine were distributed in low efficiency area, the AC(alternating current)drive control strategy based on power matching was designed, and the output power was adjusted by transmission system according to different driving cycles. The power region of electric drive system was determined. Vehicle load degree was introduced to evaluate load degrees of different driving cycles. A three-layer hierarchical control strategy was proposed. The rotational speeds of in-wheel motor were pretreated by using moving average filter algorithm, and vehicle load degrees were calculated in the upper algorithm. In the middle algorithm, the reference power was calculated with vehicle load degree and engine speed, and a three-dimensional fuzzy controller was used in the middle algorithm. In the lower algorithm, the reference power was tracked by driving system to realize power matching of mine truck. The electric drive test bench was built, and the effect of power matching control strategy was verified. Verification result indicates that by using power matching control strategy, the change of load degrees can be quickly identified for common driving cycles of starting, climbing, sudden loading and downhill. The driving power of current load is calculated, which can guarantee the dynamic performance of mine truck in complicated working conditions. The oil saving effect of control strategy for mine truck is examined by steady test, and the working points of engine locate nearby the optimum fuel economy curve. Compared with the maximum power satisfied strategy, the fuel consumption of power matching control strategy reduces by 10.8% for load of 40 kW, and 4.8% for load of 80 kW, so the effectiveness and feasibility of control strategy are validated. 1 tab, 14 figs, 25 refs.

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Last Update: 2015-02-25