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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与恒V/f控制相比，具有更高的速度控制性能，因而受到广泛关注。本研究提出了一种新型的基于磁链观测器的无传感器矢量控制系统，并采用DSP控制的IGBT逆变器实现了该系统。为了使PWM逆变器在各种运行条件下都能获得良好的稳态和瞬态性能，本文研究了控制器的设计，提出了一种精确的PWM逆变器电压控制方法。实验系统：采用数字信号处理器（TMS 320 C30）实现控制系统。开发了两种软件。一个是用DSP汇编语言编写的基于观测器的无速度传感器矢量控制程序，另一个是用C语言编写的监控程序。通过对IGBT压降和死区时间的补偿，实现了PWM逆变器的精确电压控制.计算和实验结果：实验结果表明，该方法的计算结果与稳态和瞬态条件下的吻合良好。从而得出基于所提出的分析模型的系统设计方案.稳定性的提高：我们提出了一种无传感器的方法，其中漏感被省略的电压计算。结果表明，该方法比传统方法更稳定.参数辨识：通过在励磁电流中加入交变分量，辨识出定、转子电阻。通过使用这种方法，鲁棒性将得到显著提高.另一种无速度传感器矢量控制：提出了一种基于定子电阻辨识的q轴磁链无速度传感器矢量控制，并进行了实验验证。提出了一种基于无功功率的无速度传感器矢量控制方法。在这种方法中，定子电阻是不必要的。