Open AccessPredictive controller design for a high‐frequency injection sensorless synchronous reluctance drive system
Author(s) -
Liu TianHua,
Haslim Hade Saputra,
Tseng ShaoKai
Publication year - 2017
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2016.0054
Subject(s) - control theory (sociology) , transient (computer programming) , controller (irrigation) , rotor (electric) , voltage , engineering , tracking (education) , control engineering , computer science , control (management) , electrical engineering , psychology , pedagogy , artificial intelligence , agronomy , biology , operating system
This study proposes implementation of a predictive controller for a sensorless synchronous reluctance drive system. First, high‐frequency voltage is injected in the α ‐axis. Then by measuring the α – β axis high‐frequency currents, the rotor position of the SynRM can be estimated. After that, a predictive speed controller is implemented to improve transient responses, load disturbance responses, and tracking responses. To demonstrate its viability, a proposed 560 W sensorless drive system is implemented by using a TMS‐320F‐28335 DSP made by Texas Instruments and some circuits. Experimental results clearly indicate that the proposed high‐frequency α ‐axis voltage injection method with a predictive speed‐loop controller offers superior responses including faster transient responses, better load disturbance responses, and better tracking responses than a high‐frequency d – q axis voltage injection method with a PI speed‐loop controller.