15kW通用变频器的设计_大学学士学位论文 p67.docxVIP

15kW通用变频器的设计摘要变频器在各行业的应用，已经成为改造传统工业、提高生产过程自动化水平、节约能源、推动技术进步的主要手段。恒压频比控制是通用变频器中应用最为广泛的控制方式之一。本文在总结国内外研究成果的基础上，以TI公司生产的TMS320F2812型DSP作为核心，设计了通用变频器，并进行了恒压频比控制算法的设计。主要包括以下内容：在已有通用变频器的拓扑结构的基础上，分析了通用变频器的工作原理，以及基本控制方式。以TI公司生产的TMS320F2812作为核心，设计了通用变频器的硬件电路，其中包括信号采集电路、驱动电路、电源电路、保护电路。在对通用变频器的几种控制算法进行分析的基础上，在MATLAB/Simulink软真环境下，建立了通用变频器的电路仿真模型。在此基础上，应用恒压频比的控制算法实现了通用变频器电路仿真。仿真结果表明，本文所研究的通用变频器能够达到所设计的预期目标。关键词：通用变频器；恒压频比控制；仿真；DSPDesign of 15kW InverterAbstractIn the actual VVVF systems, AC variable speed control system has gradually grown into the mainstream instead of DC drive system. So far, Inverter has been widely used in all walks of industries, automatic development of production process and saves a great deal of energy and accelerates the improvement of technology. So it with great realistic significance to launch researches on inverter and technologies related to it.Constant Proportion of Voltage to Frequency is the most widely used ways in all inverter, inverter using this way cost less and control simply. This paper integrates the most lately research results on the inverter system and, on this basis, launches some theoretical study and practical application. Generally, the paper including five parts with details as following:Complete the frequency controller hardware designation. Hardware side, finish the design and build the frame the hardware, conclude rectifying section, filtering part, inverter part, protection circuit, driving circuit, detection circuit. Introduce the control algorithm of AC speed regulating system, common algorithm conclude constant pressure frequency , vector, direct torque etc. The paper studies the SPWM technology and general analysis to the result of the matlab emulator to VVVF, and details the current waveform, and launches theoretical study.Keywords：Inverter; Asynchronous machine; Simulink; DSP目录摘要IABSTRACTII第1章绪论11.1论文研究意义11.2国内外发展现状21.3论文的主要工作4第2章通用变频器的结构及工作原理52.1通用变频器的基本结构52.1.1 电流型变频器62.1.2电压型变频器72.2通用变频器工作原理72.3本章小结10第3章通用变频器的硬件电路和软件