Performance Improvement of Scalar Feedback Control for Induction Motors by Using Third Harmony Injection SPWM

2019 6th International Conference on Information Technology, Computer and Electrical Engineering (ICITACEE) Pub Date : 2019-09-01 DOI:10.1109/ICITACEE.2019.8904316

A. N. Luqman, Miftah Adiguna, Abdul Fandi, M. Facta, T. Andromeda, Hermawan, I. Setiawan

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Abstract

Induction motor is widely used in some applications. As time goes by, control of induction motor is expected to has fast response to load changes and transient response. Speed precision is also required in some applications. Scalar control is known because of simplicity. Limitations of conventional scalar control are slow response and uncontrolled speed. In other hands, vector control provides a great response of induction motor, but the implementation is relatively difficult. Different modulation technique can change the speed response of induction motor. Injecting third harmony injection to induction motor does make a significant change of induction motor's speed response. This paper intends to analyse induction motor's response by injecting third harmony injection on scalar control. Injecting third harmony signal to SPWM will improve motor's transient response and feedback response under loaded condition. The software is embedded using DSP microcontroller using fixpoint arithmetic to achieve faster computation time and to reduce memory usage.

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利用第三次谐波注入SPWM改进异步电动机的标量反馈控制性能

感应电动机在某些应用中得到了广泛的应用。随着时间的推移，人们期望异步电动机的控制对负载的变化具有快速响应和瞬态响应。在某些应用中也需要速度精度。标量控制因为简单而为人所知。传统标量控制的局限性是响应慢、速度不可控。另一方面，矢量控制为感应电机提供了很大的响应，但实现起来相对困难。不同的调制技术可以改变感应电动机的速度响应。对感应电机注入第三次谐波注入后，感应电机的速度响应发生了明显的变化。本文拟通过对标量控制注入第三次谐波注入来分析感应电动机的响应。在SPWM中注入三次谐波信号可以改善电机的瞬态响应和负载状态下的反馈响应。软件采用DSP微控制器内嵌，采用定点算法，提高了计算速度，减少了内存占用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 6th International Conference on Information Technology, Computer and Electrical Engineering (ICITACEE)

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