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ZHENG Shu-yang, JIN Chun, LUO Wei-dong. Power matching control strategy of power source for mine truck[J]. Journal of Traffic and Transportation Engineering, 2015, 15(1): 82-91. doi: 10.19818/j.cnki.1671-1637.2015.01.011
Citation: ZHENG Shu-yang, JIN Chun, LUO Wei-dong. Power matching control strategy of power source for mine truck[J]. Journal of Traffic and Transportation Engineering, 2015, 15(1): 82-91. doi: 10.19818/j.cnki.1671-1637.2015.01.011
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Power matching control strategy of power source for mine truck

doi: 10.19818/j.cnki.1671-1637.2015.01.011

  • School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China

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  • Author Bio:

    ZHENG Shuryang(1986-), male, doctoral student, + 86-10-62332467, 59708858 qq.com

    JIN Chun(1975-), male, associate professor, PhD, + 86-10-82375949, jinjinbit@163.com

  • Received Date: 2014-08-23
  • Publish Date: 2015-02-25
    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.

     

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