波能直驱式直线开关磁阻发电系统整体建模及控制策略的研究

项目名称： 波能直驱式直线开关磁阻发电系统整体建模及控制策略的研究

项目编号： No.50877058

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 电工技术

项目作者： 梁得亮

作者单位： 西安交通大学

项目金额： 33万元

中文摘要： 本项目以波能直驱式直线开关磁阻发电系统为研究对象。在理想线性假设的条件下建立了互感耦合直线开关磁阻电机的线性磁路模型，进而提出了考虑端部效应和磁饱和影响的变结构磁网络模型；总结分析了波能直驱式互感耦合直线开关磁阻发电系统的不同运行模式，并重点对其中两种运行模式下的控制策略进行了探讨；基于波能转换装置调谐运动方程，通过控制发电机电磁力的不同分量，使系统运行于谐振状态，以实现最大功率跟踪的调谐控制，通过网侧逆变器的电压、电流双闭环控制实现最优电能质量控制；基于张量电网络理论对功率变换器主电路的运行模式进行了理论分析和建模仿真，结合前述两种电机数值仿真模型构建了完整的波能直驱式互感耦合直线开关磁阻发电系统仿真模型，该模型通过基于谐振点最大功率跟踪和基于开关位置优化两套控制系统的分时工作，实现了两种运行模式的全过程运行仿真；以直线永磁同步电机PLC变频控制系统为波浪模拟机，结合基于DSP和FPGA的互感耦合直线开关磁阻发电机的数字控制系统和功率变换器，搭建了波能直驱式互感耦合直线开关磁阻发电系统的模拟实验平台，对波能直驱式直线开关磁阻发电系统进行了实验研究，为其实用化提供理论和技术基础。

中文关键词： 直线开关磁阻发电机；互感耦合；波能发电；系统建模；控制策略

英文摘要： This project is based on the direct-drive mutually coupled linear switched reluctance generator (MCLSRM) system. A linear model based on the ideal linear assumption and a nonlinear variable structure model, where the end-effect and magnetic saturation are taken into considerations, are set up for the MCLSRM. Four operation modes of the generator system are summarized and two of them are mainly discussed. Based on the resonance kinematic equation, the control strategy based on the resonance point tracking to obtain the maximum wave energy is realized by controlling the different vector of electromagnetic force to make the system running in the resonance state. And The optimal power quality control is realized by close-loop control of the voltage and current of the inverter on power grid side. Operation modes of power converter main circuit are analyzed and modeled theoretically base on the tensor network method. The machine and control system are modeled integrally combining tensor network model of power converter and two numerically simulated models mentioned above, which is base on the two control strategies - the control strategy based on the resonance point tracking to obtain the maximum wave energy and the control strategy based on the optimal turn-on and turn-off position- and is realized to simulate the operation status for the whole process. Based on the PLC driven linear permanent magnetic machine wave simulation system and combine with the DSP and FPGA digital control system and the power converter of MCLSRM, the experimental platform of direct-drive MCLSRM system is set up. Several Expeiments are performed, which supply the theoretical and practical foundations for the practical proposition.

英文关键词： Linear switched reluctance generator; Mutually coupled; Wave energy conversion; Modeling; Control strategy