20kW潮流能发电机组电力电子负载的设计与开发

发布时间：2018-04-25 22:00

本文选题：潮流能发电系统 + 电力电子负载　；参考：《中国海洋大学》2014年硕士论文

【摘要】：随着社会快速发展，人们对能源的需求也在持续增加。伴随着人们的大量使用传统化石能源，其储量也在日益减少而传统化石能源的大量使用也造成环境污染的进一步加重。为了减少人们对环境的破坏并且能够得到长期稳定的能源供应，大力发展新能源是解决上述问题的关键。世界各大能源国都在积极改善自己的能源结构，开发利用各种绿色可再生能源。海洋潮流具有很强的规律性并且潮流能储量丰富,受到世界各个国家的重视。本论文通过电力电子负载设计来探究与评估潮流能。本文阐述了电力电子负载在20kW潮流能发电系统中的作用，确定了电力电子负载系统的整体结构。然后从电力电子负载主回路入手，阐述了主回路拓扑结构以及分段式负载控制的思想。并通过公式计算、参数比较、系统要求确定系统所用器件。论述了电力电子开关的PWM控制原理，并进行控制算法的设计。本论文所设计的电力电子负载在控制功能方面具有恒功率控制、恒流控制、恒压控制、恒阻控制。在电力电子负载设计阶段通过搭建Matlab/Simulink仿真模型，对所设计主回路以及控制算法进行仿真验证。在软件设计方面首先明确了潮流能发电系统各个工况之间的转换流程。根据潮流能发电系统要求设计了符合我们控制需要的恒功率控制方案。然后通过本地触摸屏软件的设计，，使我们在现场能够直观的看到水下机组与岸上电力电子负载的运行情况。远程GPRS通信的设计使我们可以在实验室当中观测现场设备的运行情况。潮流能发电系统对系统的稳定性提出了更高的要求。如何设计出一套比较全面的测试方案，验证潮流能发电系统的稳定性，也是本论文的一个研究方向。本论文通过设计加载实验与密封测试实验，全面检测系统的稳定性，为后续海上实验打下坚实的基础。
[Abstract]:With the rapid development of society, the demand for energy is also increasing. With the extensive use of traditional fossil energy, its reserves are decreasing day by day, and the extensive use of traditional fossil energy has further aggravated the environmental pollution. In order to reduce the damage to the environment and to obtain a stable energy supply for a long time, developing new energy is the key to solve the above problems. All the major energy countries in the world are actively improving their energy structure and developing and utilizing all kinds of green renewable energy. Ocean tidal current has strong regularity and rich tidal energy reserves, so it has been paid attention to by all countries in the world. In this paper, power electronic load design is used to explore and evaluate power flow energy. In this paper, the function of power electronic load in 20kW power flow power generation system is expounded, and the whole structure of power electronic load system is determined. Then, starting with the power electronic load main loop, the topological structure of the main loop and the idea of segmented load control are expounded. Through formula calculation and parameter comparison, the system needs to determine the devices used in the system. The PWM control principle of power electronic switch is discussed, and the control algorithm is designed. The power electronic load designed in this paper has constant power control, constant current control, constant voltage control and constant resistance control. In the stage of power electronic load design, the main loop and control algorithm are simulated and verified by building Matlab/Simulink simulation model. In the aspect of software design, the conversion flow between different working conditions of power generation system is defined. According to the requirements of power flow power generation system, a constant power control scheme is designed to meet our control needs. Then through the design of the local touch screen software, we can see the operation of the underwater unit and the power electronic load on the shore directly in the field. The design of remote GPRS communication enables us to observe the operation of field equipment in the laboratory. The stability of the power flow power generation system is higher than that of the power generation system. How to design a comprehensive test scheme to verify the stability of power flow power generation system is also a research direction in this paper. In this paper, the stability of the system is tested by designing the loading experiment and the seal test experiment, which lays a solid foundation for the subsequent offshore experiment.
【学位授予单位】：中国海洋大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM31

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