Theoretical basis for combining thermo-hydraulic and thermo-electric power conversion into one unit - thermo-hydraulic linear generator
将热工水力和热电动力转换合二为一的理论基础——热工水力线性发电机
基本信息
- 批准号:273596486
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2015
- 资助国家:德国
- 起止时间:2014-12-31 至 2016-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Hitherto, hydraulics is the preferred type of power conversion and transmission in mobile machinery. For years, at the applicants, they have successfully been dealing with the development of a simple and inexpensive drive unit of the thermo-hydraulic free piston engine (FKM) for mobile hydraulic hybrid technology, which is capable of providing the required hydraulic propulsion power to the machine as efficiently and with as low-emissions as possible. Current developments in electric engineering enable the development of new applications. The reasons for replacing conventional drives are the increased energy efficiency and / or the improved controllability. Therefore, out of functional and energetic reasons, the simultaneous supply of hydraulic and electric power in a primary unit for future mobile machines is desirable. The aim of the research project is to provide the theoretical basis for combining thermo-hydraulic and thermo-electric power conversion into one unit (thermo-hydraulic linear generator - THLG) in order to obtain a reliable estimate of the technical realisation and the technical complexity. The simultaneous and in its ratio freely selectable supply of hydraulic and electric power on the basis of the free piston principle is possible in principal. However this requires fundamental research concerning the interaction between both energy transformations, of a stable process control as well as the analysis and assessment of the physical process parameters concerning the future design of a prototype. Starting from a suitable system configuration of the FKM under specific requirements, a linear generator which is optimized in power density and adapted to the existing prototypes is developed. The combination of both power conversions requires a coordinated control strategy, which can be derived from the dependencies of the subsystems with each other and the dynamic behavior of the whole system. These must allow a power output which meets the requirements and is simultaneous and variable on the hydraulic and the electric side as well as ensure a stable operation. For this purpose different regulatory approaches for the inner-stationary operation of the subsystem linear generator, which is conditional to principles, and the highly dynamic behavior of the complete system THLG are to be investigated. In order to keep hardware costs low, sensorless position detection is preferred, since the control of the linear machine requires an exact knowledge of the position of the mover. The possible adaptation of hybrid sensorless methods over the whole speed range is analysed for the specific application THLG. The result is detailed information on a THLG, whether and under which technical efforts it is practicable. They include both, issues of energetics and control.
目前,液压是移动的机械中动力转换和传输的首选类型。多年来,在申请人处,他们已经成功地处理了用于移动的液压混合动力技术的热液压自由活塞发动机(FKM)的简单且廉价的驱动单元的开发,该驱动单元能够尽可能有效地且以尽可能低的排放向机器提供所需的液压推进动力。电气工程的当前发展使新应用的开发成为可能。更换传统驱动器的原因是提高了能源效率和/或改善了可控性。因此,出于功能和能量的原因,希望在用于未来的移动的机器的主单元中同时供应液压和电力。该研究项目的目的是提供理论基础,将热工水力和热电转换结合到一个单元(热工水力线性发电机- THLG)中,以获得技术实现和技术复杂性的可靠估计。基于自由活塞原理的液压和电功率的同时且以其比例自由选择的供应原则上是可能的。然而,这需要对两种能量转换之间的相互作用进行基础研究,稳定的过程控制以及对未来原型设计的物理过程参数进行分析和评估。从一个合适的系统配置的FKM在特定的要求下,线性发电机的功率密度优化,并适应现有的原型开发。两种功率转换的组合需要协调的控制策略,该策略可以从子系统彼此的依赖性和整个系统的动态行为导出。这些必须允许满足要求的功率输出,并且在液压和电气方面是同步和可变的,并确保稳定的操作。为此目的,要研究子系统线性发电机的内稳态操作的不同调节方法,这取决于原理,以及整个系统THLG的高度动态行为。为了保持低硬件成本,优选无传感器位置检测,因为线性机器的控制需要动子位置的精确知识。在整个速度范围内的混合无传感器方法的可能适应分析的具体应用THLG。其结果是详细的信息THLG,是否和下的技术努力是可行的。它们包括能量学和控制问题。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Professor Dr.-Ing. Wilfried Hofmann其他文献
Professor Dr.-Ing. Wilfried Hofmann的其他文献
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