Sensorless Control of CSI-Fed PMSM Drives Based on Improved Extended State Observer.
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| Title: | Sensorless Control of CSI-Fed PMSM Drives Based on Improved Extended State Observer. |
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| Authors: | Liu, Huibo1 (AUTHOR), Wang, Yu1,2 (AUTHOR), An, Quntao1,2 (AUTHOR), Wu, Youtong2 (AUTHOR), Lu, Yuzhuo2 (AUTHOR) |
| Source: | Energies (19961073). Mar2026, Vol. 19 Issue 5, p1286. 18p. |
| Subject Terms: | *Sensorless control systems, *Phase-locked loops, *Electric motors, *Motor drives (Electric motors), *PID controllers, *Observability (Control theory) |
| Abstract: | To address the problem that the maximum error of back-EMF observers increases with an increase in motor speed, based on an extended state observer, this paper designs an angle-compensation strategy based on a proportional–integral controller and an extended state observer, according to the principle that a proportional–integral controller uses an integral link to eliminate steady-state error. After obtaining the back EMF, the proportional–integral phase-locked loop is often used to extract the angle and speed from the observed back EMF. However, this method will produce steady-state errors when the motor is accelerated, and the integration link is prone to overshoot, so it exhibits some defects. Therefore, this paper uses an extended state observer instead of a proportional–integral regulator to build an improved phase-locked loop based on an extended state observer. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Abstract: | To address the problem that the maximum error of back-EMF observers increases with an increase in motor speed, based on an extended state observer, this paper designs an angle-compensation strategy based on a proportional–integral controller and an extended state observer, according to the principle that a proportional–integral controller uses an integral link to eliminate steady-state error. After obtaining the back EMF, the proportional–integral phase-locked loop is often used to extract the angle and speed from the observed back EMF. However, this method will produce steady-state errors when the motor is accelerated, and the integration link is prone to overshoot, so it exhibits some defects. Therefore, this paper uses an extended state observer instead of a proportional–integral regulator to build an improved phase-locked loop based on an extended state observer. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19961073 |
| DOI: | 10.3390/en19051286 |
