标题: | 单晶片DSP为基础之全数位式交流感应马达高转速控制 DSP-Based Fully Digital High Speed Control of AC Induction Motors |
作者: | 何昌佑 Chang-Yu Ho 邹应屿 Ying-Yu Tzou 电控工程研究所 |
关键字: | 数位讯号处理器, 全数位控制, 高转速控制;DSP, Fully digital control, high speed control |
公开日期: | 1993 |
摘要: | 本文设计制作一个以单晶片数位讯号处理器(DSP)为基础之全数位式交流 感应伺服驱动器,并提出一种高转速控制方法,可使交流感应马达运转 于3倍之基速,而仍能达到精密转速的控制要求,同时具有良好的暂态与 稳态响应。伺服驱动器中采用弱磁控制技术以满足高转速控制的需求,且 以间接磁场导向控制法则来完成电流解耦控制。对于电流解耦控制之感应 马达动态特性亦提出简化的等效数学模型,并以此数学模型为基础来设计 速度控制器。采用数位讯号处理器来实现全数位控制法则,其中包括位置 控制、高转速控制、向量控制、软体化的电流控制回路以及PWM讯号产生 等。此外,本文亦完成全数位式交流感应伺服驱动器之硬体规划与设计, 并制作一个以DSP为基础之数位控制板及以智慧型功率模组(IPM)为基础之 电压源换流器,而大幅地减少硬体周边电路的体积。实验以一个300W的交 流感应马达来进行,结果不仅验证数位化电流回路之可行性,亦达到全数 位式高转速控制的目标。 This thesis presents the design and implementation of a fully digital-controlled ac induction servo drive by using a digital signal processor (DSP). A high speed control method is proposed to operate an ac induction motor up to triple its base speed with high performance of transient and steady-state responses. An indirect field-oriented vector control scheme with software current feedback loop is employed to perform the fast response current decoupling control of an induction motor. With an appropriate servo compensator design, the induction motor drive can achieve the desirable servo performance. Moreover, a field- weakening technique is adopted to expand the speed control range under the limited inverter ceiling voltage. In order to verify the proposed control scheme, a DSP-based digital controller and an intelligent power module (IPM) based voltage source inverter are implemented to construct the fully digital controlled ac induction servo system and minimize the hardware peripherals. DSP executes a PWM signal generation, current control, vector control and speed/position control processing. In application to a 300W induction motor drive system, experimental results show that the DSP-based fully digitized servo drive can achieve the high speed control requirement. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT820327018 http://hdl.handle.net/11536/57732 |
显示于类别: | Thesis |