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...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/140609 |
| _version_ | 1824456694209445888 |
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| author | Zhang, Xinan Foo, Gilbert Hock Beng |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Zhang, Xinan Foo, Gilbert Hock Beng |
| author_sort | Zhang, Xinan |
| collection | NTU |
| 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. |
| first_indexed | 2025-02-19T03:58:10Z |
| format | Journal Article |
| id | ntu-10356/140609 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:58:10Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-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. |
| 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 |
| title | 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_short | 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 |
| topic | Engineering::Electrical and electronic engineering Constant Switching Frequency Direct Torque Control (DTC) |
| url | https://hdl.handle.net/10356/140609 |
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