New compound energy regeneration system and control strategy for hybrid hydraulic excavators
New compound energy regeneration system and control strategy for hybrid hydraulic excavators
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DOI：
10.1016/j.autcon.2016.03.016
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发表时间：
2016-08
影响因子：
10.3
通讯作者：
Tianliang Lin;Weiping Huang;Haoling Ren;Shengjie Fu;Liu Qiang
中科院分区：
文献类型：
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作者：
Tianliang Lin;Weiping Huang;Haoling Ren;Shengjie Fu;Liu Qiang
采用与混合动力系统相同的能量存储装置的能量再生系统（ERS）可以提高混合动力液压挖掘机（HHE）的燃油经济性。然而，传统的ERS具有比传统的孔口控制系统更差的动态致动器性能。此外，液压马达和发电机的容量应足够大，以避免过载。在综合考虑的基础上，提出了一种综合了电动蓄能器和液压蓄能器优点的复合式ERS。然后讨论了保证最小和最大回收时间的控制策略以及控制臂速和提高回收效率的方法。这里构造并描述了一个测试台。估计39%的总势能可以再生的标准操作条件下，在拟议的系统，而传统的ERS的回收效率约为36%。此外，在极端操作条件下可以提高回收效率。仿真结果表明，与传统的ERS相比，该ERS具有更好的控制性能，而回热器的容量可减少65%以上。
Energy regeneration systems (ERSs) that use the same energy storage device as hybrid power systems can improve the fuel economies of hybrid hydraulic excavators (HHEs). However, conventional ERSs have worse dynamic actuator performance than traditional orifice control systems. In addition, the capacities of both the hydraulic motor and the generator should be large enough to avoid overload. Based on comprehensive considerations, a compound ERS that combines the advantages of an electric accumulator and a hydraulic accumulator was proposed. Then control strategies that guarantee the minimum and maximum recovery times and methods for controlling the boom velocity and improving the recovery efficiency were discussed. A test bench was constructed and described here. An estimated 39% of the total potential energy could be regenerated under the standard operating conditions in the proposed system, while the recovery efficiency of the conventional ERS is approximately 36%. In addition, the recovery efficiency can be improved under extreme operating conditions. It was also shown that the proposed ERS had better control performance than the conventional ERS, while the capacity of the regenerator could be reduced by more than 65%.