【作者】 熊伟；

【导师】 李志俊； 沈克宇；

【作者基本信息】 武汉理工大学 ， 控制科学与工程， 2010， 硕士

【摘要】 随着世界经济一体化进程的不断发展,起重机在港口和越来越多的领域得到广泛的应用。由于能源价格的急速攀升和环境保护的进一步要求,传统起重机高耗能,低效率的缺点日益凸现,因此各国纷纷加强对起重机节能技术和绿色制造技术的研发,绿色化成为港口机械的发展趋势。本文设计的混合动力起重机系统主要由柴油发电机组、超级电容器、双向DC-DC变换器和工作电机构成。通过超级电容器,将重物负载下降回馈的能量储存起来,充分利用回收的再生能量作为动力补给,可以大大提高了能源利用率,这样就将原来消耗在制动电阻上的能量完全利用起来,从而达到节能环保的目的。本文主要研究混合动力起重机系统的原理以及各器件特性,并制定系统最优控制策略,改进柴油发电机组性能,降低发动机装机容量,充分回收负载势能,提高系统能量利用率。本文主要以25T轮胎式起重机作为研究对象,对整个混合动力起重机系统进行详细的理论分析,拟定混合动力起重机系统控制算法,设计软开关双向DC-DC变换器,并进行系统实验,分析节能效果。(1)分析混合动力起重机系统原理和组成,包括柴油发电机组、超级电容器、能量管理系统、双向DC-DC变换器的工作原理及特点,为合理选配柴油发电机组、超级电容器提供理论依据；(2)根据混合动力起重机系统的特性,设计相应的各种控制策略,包括柴油发电机组控制策略、能耗制动控制方式、超级电容器能量控制策略、双向DC-DC充放电控制方式等；(3)设计了软开关双向DC-DC变换器,主要介绍系统实际中使用的移相控制全桥软开关变换器,研究双向DC-DC变换器的控制策略,并进行系统实验,验证整个系统工作原理的正确性、混合动力起重机控制策略以及双向DC-DC软开关控制器控制策略的合理性,并对实验数据进行分析,并最终得到了能反映系统节能效果的节能比。更多还原

【Abstract】 With the continuous development of the world economic integration process’s unceasing development, crane has a wide range of applications at the port and a growing number of areas. As a result of the rapid rise in energy prices and environmental protection’s further request, the disadvantage of high energy consumption and low efficiency of the traditional crane in reliefs day by day, so many countries strengthen research and development of crane energy-saving and green manufacturing technology, the green have become the development trend of port machinery.These compositions of Hybrid power crane system are diesel generator sets, super capacitors, bi-directional DC-DC converter and work drive motor. The backup energy of the load drop was stored by the super capacitor, this system that can make full use of recycled supplies of renewable energy as the driving force can be greatly improved energy efficiency, so the energy consumed by braking resistor originally can be fully utilized and energy-saving and environmental protection can be achieved.This paper studies the principle of the hybrid power crane system and each device characteristics, and develops a systematic optimal control strategy to improve the performance of generating units to reduce engine capacity, full recovery of the load potential energy, improve energy efficiency of the system.This article analyses the whole system of hybrid motive crane in detail, establishes the control strategy, and designs the Bidirectional DC-DC Converter Based on Soft Switching. Finally the article also carries out the experiment and analyzes the effect of energy-saving of the system.(1) Analyzing the characteristic of the driving components of the hybrid power crane system, including the principle and characteristic of the diesel generator set, super-capacitor, Energy Management System and bidirectional DC-DC convertor. According to the above analysis, the selecting of diesel generator set and super-capacitor becomes straightforward;(2) According to the characteristics of the hybrid power crane system, design the control strategies, including diesel generator set control strategy, dynamic braking control mode, the super capacitor energy distribution control strategies, bi-directional DC-DC charge and discharge control method;(3) Designing the soft-switching bi-directional DC-DC converters, and describing the system used in the actual phase-shifted full-bridge soft-switching converters, and studying the bi-directional DC-DC converter control strategy, and conducting systematic experiments to testing the correctness of the working principle of the whole system accuracy, the control strategies of hybrid power crane system and bi-directional DC-DC soft-switching controller is reasonable. The article also analyzes the data of the experiment and studies the effect of energy-saving.更多还原