Structural Optimize Design For The High-speed Elevator Inverter Based On The Thermal Characteristic Coupling Analysis

With the advancement of China’s urbanization, the bloom of skyscraper is providing a broad market prospect to the development of high-speed elevator. Inverter is the core component of high-speed elevator control system which is also a component that owns the highest technology as well as the highest added value in all elevator parts. With the constant improvement of the integration level of electronic components, thermal failure has become the bottleneck of integrated design for the high-speed elevator inverter. The topology optimization design is an effective method for improving the thermal characteristics of high-speed elevator inverter. This paper is going to optimize topology design of the high-speed elevator inverter by using particle swarm algorithm.The main research contents are as followings:The first chapter firstly introduces the research statuses of thermal design for electrical devices at home and abroad, and points out the problems existing in the research of thermal design for inverters, then elaborates the importance of analyzing thermal characteristics as well as optimizing topology design of high-speed elevator inverter, at last introduces the research background, research contents and structure of this article.The second chapter introduces the basic theories and research methods about thermal analysis. By analyzing the heat transfer mechanism of high speed elevator inverter, and building the corresponding thermal resistance network model in usage of thermoelectric similar principle, this paper provides a theoretical basis for the rational overall thermal scheme of the inverter.The third chapter introduces the thermal design of high-speed elevator inverter. Based on an analysis of basic parameters requirements and structural features of high-speed elevator inverter, and analysis of the detailed designs of cooling method, radiator, fan selection, as well as the duct, this paper has obtained the overall solutions for the system’s thermal design. And simulates the thermal characteristics of high-speed elevator inverter by using the finite element thermal analysis software Icepak. Analyze the distribution information of the temperature field, thermal stress, the flow field of high-speed elevator inverter. Thermal analysis shows that, though this design meets the requirements, there is still room for improvement. And by analyzing the influences of different parameters on the temperature field, several optimization improvement idea are brought up.The chapter fourth optimizes the topology structure for high-speed elevator inverter by using particle swarm algorithm. Appropriate objective function is provided, and an optimization goal is brought up. The optimization carries out from the layout of power components and the structure design of radiator. The temperature field of high-speed elevator inverter after optimization by using topology structure is analyzed, which is also compared with the data before optimization. This paper verifies the feasibility and practicality of the proposed theory.The chapter fifth use particle swarm optimization (pso) algorithm for KLK1high-speed elevator inverter structure optimization design.Contrast analysis of thermal characteristics of the data before and after optimization. To verify the effectiveness of the structural optimization technique based on particle swarm optimization proposed in this paper.The sixth chapter summarizes the main research contents and research achievements, and the next research direction of this subject is also discussed.