Overmodulation of constant-switching-frequency-based DTC for reluctance synchronous motors incorporating field-weakening operation

This paper presents a simple but effective overmodulation scheme for direct torque controlled reluctance synchronous motor (RSM) incorporating field-weakening (FW) operation. To overcome the problems of high torque ripples and variable switching frequency experienced by conventional direct torque co...

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Main Authors: Zhang, Xinan, Foo, Gilbert Hock Beng
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/140609
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1406092020-06-01T02:05:37Z Overmodulation of constant-switching-frequency-based DTC for reluctance synchronous motors incorporating field-weakening operation Zhang, Xinan Foo, Gilbert Hock Beng School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Constant Switching Frequency Direct Torque Control (DTC) This paper presents a simple but effective overmodulation scheme for direct torque controlled reluctance synchronous motor (RSM) incorporating field-weakening (FW) operation. To overcome the problems of high torque ripples and variable switching frequency experienced by conventional direct torque control (DTC), constant-switching-frequency-based torque regulator is employed. By combining the proposed overmodulation scheme with this torque regulator, the dynamic torque response and constant power speed range of RSM drives are improved. Simultaneously, low torque ripples are obtained. Furthermore, an adaptive activation algorithm is proposed to activate overmodulation only when high torque output is demanded. This algorithm also contributes to ensure the stability of drives with overmodulation through effective flux regulation, which is essential for FW operations. The validity of the proposed method is verified by experimental results supplemented in this paper. 2020-06-01T02:05:37Z 2020-06-01T02:05:37Z 2018 Journal Article Zhang, X., & Foo, G. H. B. (2019). Overmodulation of constant-switching-frequency-based DTC for reluctance synchronous motors incorporating field-weakening operation. IEEE Transactions on Industrial Electronics, 66(1), 37-47. doi:10.1109/TIE.2018.2826478 0278-0046 https://hdl.handle.net/10356/140609 10.1109/TIE.2018.2826478 2-s2.0-85045310809 1 66 37 47 en IEEE Transactions on Industrial Electronics © 2018 IEEE. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Constant Switching Frequency
Direct Torque Control (DTC)
spellingShingle Engineering::Electrical and electronic engineering
Constant Switching Frequency
Direct Torque Control (DTC)
Zhang, Xinan
Foo, Gilbert Hock Beng
Overmodulation of constant-switching-frequency-based DTC for reluctance synchronous motors incorporating field-weakening operation
description This paper presents a simple but effective overmodulation scheme for direct torque controlled reluctance synchronous motor (RSM) incorporating field-weakening (FW) operation. To overcome the problems of high torque ripples and variable switching frequency experienced by conventional direct torque control (DTC), constant-switching-frequency-based torque regulator is employed. By combining the proposed overmodulation scheme with this torque regulator, the dynamic torque response and constant power speed range of RSM drives are improved. Simultaneously, low torque ripples are obtained. Furthermore, an adaptive activation algorithm is proposed to activate overmodulation only when high torque output is demanded. This algorithm also contributes to ensure the stability of drives with overmodulation through effective flux regulation, which is essential for FW operations. The validity of the proposed method is verified by experimental results supplemented in this paper.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Zhang, Xinan
Foo, Gilbert Hock Beng
format Article
author Zhang, Xinan
Foo, Gilbert Hock Beng
author_sort Zhang, Xinan
title Overmodulation of constant-switching-frequency-based DTC for reluctance synchronous motors incorporating field-weakening operation
title_short Overmodulation of constant-switching-frequency-based DTC for reluctance synchronous motors incorporating field-weakening operation
title_full Overmodulation of constant-switching-frequency-based DTC for reluctance synchronous motors incorporating field-weakening operation
title_fullStr Overmodulation of constant-switching-frequency-based DTC for reluctance synchronous motors incorporating field-weakening operation
title_full_unstemmed Overmodulation of constant-switching-frequency-based DTC for reluctance synchronous motors incorporating field-weakening operation
title_sort overmodulation of constant-switching-frequency-based dtc for reluctance synchronous motors incorporating field-weakening operation
publishDate 2020
url https://hdl.handle.net/10356/140609
_version_ 1681059740193390592