详解【精品】基于在线有哪些信誉好的足球投注网站控制器的感应电机效率优化-毕业设计.docVIP

(此文档为word格式，下载后您可任意编辑修改！) 毕业设计(论文) 课题名称 院 (系) 专 业 自动化 姓 名 学 号 起讫日期 指导教师 Abstract Induction motor variable frequency drive system efficiency optimization control from scholars, Existing methods can be divided into four categories: efficiency based on a simple state variable optimal control (SSC), the efficiency of search-based optimal control method (SC), the efficiency loss model based on optimization of motor control (LMC), and with more than a few Ways characteristic mixture of optimal control (HC). The efficiency of the optimization strategies with different features, but no matter which method, and its essence is used at light loads, reducing the level of the motor flux method to reduce the core losses to achieve efficiency gains. To reduce the loss of this control method using online search to achieve the optimal efficiency. The current method of online search into three categories. The first control algorithms for fuzzy search (FLSC), the second golden section method, and the third gradient method. Golden Section of the convergence speed, but the volatility of the flux is still large, the gradient method used to achieve this efficiency optimization. Gradient Method to search for using the minimum input power operating point, based on the fact that the input power is the stator flux of the concave function, there is a global optimum. Algorithm along the direction of the input power decreases gradually increase or decrease the stator flux, determine the most advantage of the possible range, then change the search step until a terminating condition, we will achieve the most benefits .This method is both fast convergence and robustness of the parameters of the advantages of strong lines, is a quite promising strategy for induction motor efficiency optimization control. Simulation and experimental results show that this method not only speed advantages, bu