Slip Frequency Controlled Type of Sensorless Vector Control of Induction Motor Using Flux Observer

利用磁通观测器的转差频率控制型感应电机无传感器矢量控制

基本信息

批准号：
07650334
负责人：
TSUJI Mineo
金额：
$ 1.41万
依托单位：
Nagasaki University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650334/
关键词：
Flux Observer Induction Motor Sensorless Vector Control Vector Control Parameter Identification

项目摘要

The speed sensorless vector control has attracted the attention because of high performance speed control of an induction motor comparing with the constant V/f control. In this research, new flux observer based sensorless vector control systems are proposed and implemented by using DSP controlled IGBT inverter. In order to realize excellent steady-state and transient performances for various operating conditions, the design of controller is studied and an accurate voltage control of PWM inverter is developed.Principal results obtained by this work are as follows ;1. Experimental system : The digital signal processor (TMS320C30) is used for the implementation of the control system. Two kinds of softwares have been developed. One is an observer based sensorless vector control program written in the DSP assembly language and the other is a monitoring program written in C language. By compensating the voltage drop and dead time of IGBT,an accurate voltage control of PWM inverter was developed.2. Computed and experimental results : The experimental results of proposed method show good agreement with the computed ones concerning with the steady state and transient condition. Therefore, the system design which is based on the proposed analytical model is attained.3. Stability improvement : We proposed a sensorless method in which the leakage inductance was omitted in the voltage computation. As the result, our method is more stable than the conventional one.4. Parameter identification : By adding an altanative component in the magnetizing current, both the stator resistance and the rotor one were identified. By using this method, the robustness will be improved satisfactory.5. Another sensorless vector control : A sensorless vector control using q-axis flux with stator resistance identification was proposed and tested experimentally. And a sensorless vector control using a reactive power was proposed too. In this method, the stator resistance is not necessary.

无速度传感器矢量控制由于与恒定 V/f 控制相比具有高性能的感应电机速度控制而引起了人们的关注。在本研究中，提出了基于磁通观测器的新型无传感器矢量控制系统，并使用 DSP 控制的 IGBT 逆变器实现。为了在各种工作条件下实现优异的稳态和瞬态性能，对控制器的设计进行了研究，开发了一种精确的PWM逆变器电压控制方法。本工作取得的主要结果如下： 1．实验系统：采用数字信号处理器(TMS320C30)来实现控制系统。已经开发了两种软件。一种是用DSP汇编语言编写的基于观测器的无传感器矢量控制程序，另一种是用C语言编写的监控程序。通过补偿IGBT的压降和死区时间，开发了一种精确的PWM逆变器电压控制方法。 2．计算和实验结果：该方法的实验结果与稳态和瞬态条件下的计算结果吻合良好。由此，完成了基于所提出的分析模型的系统设计。 3．稳定性改进：我们提出了一种无传感器方法，其中在电压计算中省略了漏电感。结果，我们的方法比传统的方法更加稳定。4．参数识别：通过在磁化电流中添加替代分量，可以识别定子电阻和转子电阻。采用该方法，鲁棒性得到了令人满意的提高。 5．另一种无传感器矢量控制：提出了一种使用带有定子电阻识别的 q 轴磁通的无传感器矢量控制，并进行了实验测试。并且还提出了使用无功功率的无传感器矢量控制。在这种方法中，不需要定子电阻。