多动力源混合起重机系统仿真研究
发布时间：2018-07-24 18:16
【摘要】：随着我国经济、社会的持续发展，资源和环境压力日趋加重，节能降耗已成为全社会的共识，也是工程机械设备的发展趋势。起重机在各行各业有着广泛的应用，是传统能源的消耗大户，同时也有着巨大的节能潜力。从起重机械的作业特点来看，重物下放过程中，随着位能的变化，会产生大量的再生能量。研究如何充分回收利用再生能量，对减轻环境污染、降低企业成本、提高企业竞争力等非常有利，具有重要的社会意义和经济意义。 本文首先阐述了起重机械的应用背景和常见节能措施，简要概括了混合动力技术的研究和应用情况，深入分析对比了混合动力起重机的研究现状，为本文的进一步研究奠定了基础。对传统起重机系统的能量流向和能耗情况进行了深入的分析，得出系统巨大的节能潜力和关键节能环节，以此为切入点挖掘出系统的节能需求，并明确了对储能系统的原则要求，确定了本文多动力源混合所采用的基本结构。 其次，对发动机和储能器件的特性进行了深入研究，为能量控制策略的制定提供了依据。提出了超级电容和蓄电池组成的复合结构，它既可以作为储能系统回收再生能量，又可作为辅助动力源，配合柴油发电机组，在提升重物时供能。 然后，基于柴油机-超级电容-蓄电池组成的多动力源混合方案，，进行了系统的总体设计。对起重作业工作循环中的不同工作状态进行了划分，制定了不同工作状态下柴油发电机组、复合电源、双向DC-DC变换器和能耗制动电阻的控制策略。基于能量控制策略和动力驱动系统的硬件构成，研究了发电机组和储能元件的参数选配。 最后，建立了多动力源混合起重机系统关键部件的仿真模型，并根据系统构成和控制策略，构建了系统总成模型。通过仿真分析，验证了超级电容/蓄电池复合电源与柴油发电机组混合驱动的可行性和能量控制策略的有效性。
[Abstract]:With the sustainable development of economy and society in China, the pressure of resources and environment is becoming more and more serious. Energy saving and consumption reduction has become the consensus of the whole society, and is also the development trend of construction machinery and equipment. Crane is widely used in various industries. It is a large consumer of traditional energy and has huge energy saving potential. According to the working characteristics of hoisting machinery, a great deal of regenerative energy will be generated with the change of potential energy in the process of heavy load dropping. It is of great social and economic significance to study how to fully recycle and utilize renewable energy to reduce environmental pollution, reduce the cost of enterprises, improve the competitiveness of enterprises and so on. In this paper, the application background and energy saving measures of lifting machinery are introduced, the research and application of hybrid power technology are briefly summarized, and the research status of hybrid electric crane is analyzed and compared in depth. It lays a foundation for further research in this paper. The energy flow and energy consumption of the traditional crane system are analyzed in depth, and the huge energy saving potential and key energy saving links of the system are obtained, which is taken as the breakthrough point to excavate the energy saving demand of the system. The principle requirement of energy storage system is defined, and the basic structure of multi-power source mixing is determined. Secondly, the characteristics of engine and energy storage device are studied in depth, which provides the basis for the formulation of energy control strategy. A hybrid structure composed of super capacitor and battery is proposed, which can be used as energy storage system to recover regenerative energy, as well as auxiliary power source, in conjunction with diesel generator set, to supply energy when lifting heavy objects. Then, the overall design of the system is carried out based on the multi-power source hybrid scheme composed of diesel engine-super capacitor-battery. The control strategies of diesel generator set, composite power supply, bidirectional DC-DC converter and energy consumption braking resistance are established. Based on the energy control strategy and the hardware structure of the power drive system, the parameter selection of generator sets and energy storage components is studied. Finally, the simulation model of key components of multi-power hybrid crane system is established, and the system assembly model is constructed according to the system structure and control strategy. The feasibility of hybrid drive of supercapacitor / battery combined power supply and diesel generator set and the effectiveness of energy control strategy are verified by simulation analysis.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH21
本文编号：2142240
[Abstract]:With the sustainable development of economy and society in China, the pressure of resources and environment is becoming more and more serious. Energy saving and consumption reduction has become the consensus of the whole society, and is also the development trend of construction machinery and equipment. Crane is widely used in various industries. It is a large consumer of traditional energy and has huge energy saving potential. According to the working characteristics of hoisting machinery, a great deal of regenerative energy will be generated with the change of potential energy in the process of heavy load dropping. It is of great social and economic significance to study how to fully recycle and utilize renewable energy to reduce environmental pollution, reduce the cost of enterprises, improve the competitiveness of enterprises and so on. In this paper, the application background and energy saving measures of lifting machinery are introduced, the research and application of hybrid power technology are briefly summarized, and the research status of hybrid electric crane is analyzed and compared in depth. It lays a foundation for further research in this paper. The energy flow and energy consumption of the traditional crane system are analyzed in depth, and the huge energy saving potential and key energy saving links of the system are obtained, which is taken as the breakthrough point to excavate the energy saving demand of the system. The principle requirement of energy storage system is defined, and the basic structure of multi-power source mixing is determined. Secondly, the characteristics of engine and energy storage device are studied in depth, which provides the basis for the formulation of energy control strategy. A hybrid structure composed of super capacitor and battery is proposed, which can be used as energy storage system to recover regenerative energy, as well as auxiliary power source, in conjunction with diesel generator set, to supply energy when lifting heavy objects. Then, the overall design of the system is carried out based on the multi-power source hybrid scheme composed of diesel engine-super capacitor-battery. The control strategies of diesel generator set, composite power supply, bidirectional DC-DC converter and energy consumption braking resistance are established. Based on the energy control strategy and the hardware structure of the power drive system, the parameter selection of generator sets and energy storage components is studied. Finally, the simulation model of key components of multi-power hybrid crane system is established, and the system assembly model is constructed according to the system structure and control strategy. The feasibility of hybrid drive of supercapacitor / battery combined power supply and diesel generator set and the effectiveness of energy control strategy are verified by simulation analysis.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH21
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