Compensation of DC offset and scaling errors in voltage and current measurements of three-phase AC/DC converters
The dc offset and scaling errors in the voltage and current measurements cause the injection of undesired dc and unbalanced currents into the three-phase input currents and subsequently lead to voltage ripple at the dc output voltage of the ac/dc converter. This paper proposes a compensation scheme...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/139836 |
| _version_ | 1826123235505209344 |
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| author | Trinh, Quoc Nam Wang, Peng Tang, Yi Koh, Leong Hai Choo, Fook Hoong |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Trinh, Quoc Nam Wang, Peng Tang, Yi Koh, Leong Hai Choo, Fook Hoong |
| author_sort | Trinh, Quoc Nam |
| collection | NTU |
| description | The dc offset and scaling errors in the voltage and current measurements cause the injection of undesired dc and unbalanced currents into the three-phase input currents and subsequently lead to voltage ripple at the dc output voltage of the ac/dc converter. This paper proposes a compensation scheme for current measurement error where the dc offset and scaling errors in the current measurement are estimated from the voltage ripple characteristics of the dc output voltage ripple combining with simple band-pass and low-pass filters. Meanwhile, the dc offset and scaling errors in the voltage measurement can be rejected by using an advanced current controller developed with a proportional resonant plus a repetitive controller designed in the synchronous (d-q) reference frame. The proposed control algorithm is able to effectively reject the impact of both voltage and current measurement error so that the three-phase input currents are regulated to be balanced and sinusoidal with ultralow dc current component. Meanwhile, the dc output voltage is also well regulated to be pure dc with a negligibly small voltage ripple. The proposed compensation method is developed without the need of extra hardware circuit, sensor, or precise information of system parameters so that it can be considered as more cost effective and robust solution. The effectiveness of the proposed solution is verified by experimental results. |
| first_indexed | 2024-10-01T06:01:20Z |
| format | Journal Article |
| id | ntu-10356/139836 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:01:20Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1398362021-01-05T06:24:02Z Compensation of DC offset and scaling errors in voltage and current measurements of three-phase AC/DC converters Trinh, Quoc Nam Wang, Peng Tang, Yi Koh, Leong Hai Choo, Fook Hoong School of Electrical and Electronic Engineering Energy Research Institute @ NTU (ERI@N) Engineering::Electrical and electronic engineering DC Current Rejection Harmonic Compensation The dc offset and scaling errors in the voltage and current measurements cause the injection of undesired dc and unbalanced currents into the three-phase input currents and subsequently lead to voltage ripple at the dc output voltage of the ac/dc converter. This paper proposes a compensation scheme for current measurement error where the dc offset and scaling errors in the current measurement are estimated from the voltage ripple characteristics of the dc output voltage ripple combining with simple band-pass and low-pass filters. Meanwhile, the dc offset and scaling errors in the voltage measurement can be rejected by using an advanced current controller developed with a proportional resonant plus a repetitive controller designed in the synchronous (d-q) reference frame. The proposed control algorithm is able to effectively reject the impact of both voltage and current measurement error so that the three-phase input currents are regulated to be balanced and sinusoidal with ultralow dc current component. Meanwhile, the dc output voltage is also well regulated to be pure dc with a negligibly small voltage ripple. The proposed compensation method is developed without the need of extra hardware circuit, sensor, or precise information of system parameters so that it can be considered as more cost effective and robust solution. The effectiveness of the proposed solution is verified by experimental results. NRF (Natl Research Foundation, S’pore) 2020-05-22T03:42:08Z 2020-05-22T03:42:08Z 2017 Journal Article Trinh, Q. N., Wang, P., Tang, Y., Koh, L. H., & Choo, F. H. (2018). Compensation of DC offset and scaling errors in voltage and current measurements of three-phase AC/DC converters. IEEE Transactions on Power Electronics, 33(6), 5401-5414. doi:10.1109/TPEL.2017.2734809 0885-8993 https://hdl.handle.net/10356/139836 10.1109/TPEL.2017.2734809 2-s2.0-85028892575 6 33 5401 5414 en IEEE Transactions on Power Electronics © 2017 IEEE. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering DC Current Rejection Harmonic Compensation Trinh, Quoc Nam Wang, Peng Tang, Yi Koh, Leong Hai Choo, Fook Hoong Compensation of DC offset and scaling errors in voltage and current measurements of three-phase AC/DC converters |
| title | Compensation of DC offset and scaling errors in voltage and current measurements of three-phase AC/DC converters |
| title_full | Compensation of DC offset and scaling errors in voltage and current measurements of three-phase AC/DC converters |
| title_fullStr | Compensation of DC offset and scaling errors in voltage and current measurements of three-phase AC/DC converters |
| title_full_unstemmed | Compensation of DC offset and scaling errors in voltage and current measurements of three-phase AC/DC converters |
| title_short | Compensation of DC offset and scaling errors in voltage and current measurements of three-phase AC/DC converters |
| title_sort | compensation of dc offset and scaling errors in voltage and current measurements of three phase ac dc converters |
| topic | Engineering::Electrical and electronic engineering DC Current Rejection Harmonic Compensation |
| url | https://hdl.handle.net/10356/139836 |
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