湖南大学学报(自然科学版)
湖南大學學報(自然科學版)
호남대학학보(자연과학판)
JOURNAL OF HUNAN UNIVERSITY(NATURAL SCIENCES EDITION)
2015年
8期
40-46
,共7页
刘昌盛%何清华%龚俊%赵喻明
劉昌盛%何清華%龔俊%趙喻明
류창성%하청화%공준%조유명
液压挖掘机%混合动力系统%节能%仿真模型%试验研究
液壓挖掘機%混閤動力繫統%節能%倣真模型%試驗研究
액압알굴궤%혼합동력계통%절능%방진모형%시험연구
hydraulic excavator%hybrid system%energy saving%simulation model%experimental study
针对目前液压挖掘机能量利用率低、油耗高的问题,分析挖掘机在典型作业工况下的能量损耗,确定混合动力系统进行节能研究的重要方向。根据混合动力挖掘机的特点,提出基于超级电容与电机的并联式油电混合动力系统方案,以山河智能公司20吨级液压挖掘机为平台建立系统仿真模型,对系统动力耦合特性、控制策略及超级电容 SOC 等因素给混合动力挖掘机节能效果带来的影响进行理论计算和仿真分析,并对系统关键参数进行了优化匹配。搭建液压挖掘机混合动力系统试验平台,对系统的节能效果进行试验验证。研究结果表明,采用油电并联混合动力系统,并选择合适的动力耦合参数、瞬时优化控制策略及超级电容 SOC 补偿参数有利于提高液压挖掘机的节能指标,节能效率可改善20%以上。
針對目前液壓挖掘機能量利用率低、油耗高的問題,分析挖掘機在典型作業工況下的能量損耗,確定混閤動力繫統進行節能研究的重要方嚮。根據混閤動力挖掘機的特點,提齣基于超級電容與電機的併聯式油電混閤動力繫統方案,以山河智能公司20噸級液壓挖掘機為平檯建立繫統倣真模型,對繫統動力耦閤特性、控製策略及超級電容 SOC 等因素給混閤動力挖掘機節能效果帶來的影響進行理論計算和倣真分析,併對繫統關鍵參數進行瞭優化匹配。搭建液壓挖掘機混閤動力繫統試驗平檯,對繫統的節能效果進行試驗驗證。研究結果錶明,採用油電併聯混閤動力繫統,併選擇閤適的動力耦閤參數、瞬時優化控製策略及超級電容 SOC 補償參數有利于提高液壓挖掘機的節能指標,節能效率可改善20%以上。
침대목전액압알굴궤능량이용솔저、유모고적문제,분석알굴궤재전형작업공황하적능량손모,학정혼합동력계통진행절능연구적중요방향。근거혼합동력알굴궤적특점,제출기우초급전용여전궤적병련식유전혼합동력계통방안,이산하지능공사20둔급액압알굴궤위평태건립계통방진모형,대계통동력우합특성、공제책략급초급전용 SOC 등인소급혼합동력알굴궤절능효과대래적영향진행이론계산화방진분석,병대계통관건삼수진행료우화필배。탑건액압알굴궤혼합동력계통시험평태,대계통적절능효과진행시험험증。연구결과표명,채용유전병련혼합동력계통,병선택합괄적동력우합삼수、순시우화공제책략급초급전용 SOC 보상삼수유리우제고액압알굴궤적절능지표,절능효솔가개선20%이상。
Based on low utilization rate of energy and high fuel consumption,the energy losses in the hydraulic excavator during typical working condition were analyzed,and the major directions of the energy saving research for the hybrid power system were derived.A parallel hydraulic & electric configuration for hybrid excavator was proposed based on capacitor and motor.For the hybrid power system based on SUN-WARD 20T hybrid excavator,the paper established simulation model,and the effect of the power coupling characteristics,the control strategy,the capacitor’s State Of Charge on the hybrid excavator were studied by contrast calculation and simulation.And the key parameters were optimized and matched.At last the energy saving effect was studied by building test platform of hybrid system,and found that adopting the parallel hydraulic & electric system,selecting the appropriate parameters in power coupling,instantaneous optimization of control strategy,compensating parameter of capacitor SOC are helpful to improve the ener-gy saving effect of hybrid excavator,and the energy saving efficiency can reach above 20%.