感应电机驱动系统的离散域电流调节器分析和设计  

Analysis and Design of Discrete Domain Current Regulator for Induction Motors Drive System

作　　者：朱洪志[1] 宋文祥[1] 阮智勇[1] 王浩宇[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《电气传动》2014年第7期3-8,共6页Electric Drive

基　　金：国家自然科学基金项目(51377102);台达环境与教育基金会<电力电子科教发展计划>项目(DREG2013009)

摘　　要：在感应电机矢量控制系统中,普遍采用在连续时间域内分析并随后离散化的方法进行电流调节器的设计,而当系统运行在高速条件下,受电机dq轴耦合以及数字系统控制延迟的影响,将导致系统性能下降。基于电机离散化模型,对使用不同电流调节器的系统特性进行了对比和分析,并通过直接离散的复矢量电流调节器设计方法,使电流环不受电机转速影响,保证了系统在宽速度范围内运行的良好性能。仿真和实验结果验证了该电流调节器设计方法的优越性和有效性。In the vector control system of induction motor, current regulator is commonly designed in continuous domain and then transformed to discrete domain. As the result of the synchronous frame cross-coupling and control delay from digital control system, the system performance is degraded when operated in high speed. Based on the discrete domain model of induction motor, the system features using different current regulators were compared. By using direct discrete complex vector current regulator, the performance of current loop was independent on speed so that system was able to work well in wide speed range. Simulation and experimental results show this current regulator is superior and available.

关 键 词：感应电机 矢量控制 高速运行 离散电流调节器 

分 类 号：TM46[电气工程—电器]