Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic
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![Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic](https://pub.mdpi-res.com/wevj/wevj-12-00149/article_deploy/html/images/wevj-12-00149-ag-550.jpg?1631093020)
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Figure 8 from Sensorless control of ultrahigh-speed PM brushless motor using PLL and third harmonic back EMF
![Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs42835-021-00985-1/MediaObjects/42835_2021_985_Fig9_HTML.png)
Improved EEMF-Based Position Sensorless Control for Non-sinusoidal Back-EMF PMSMs
![Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic](https://www.mdpi.com/energies/energies-16-01306/article_deploy/html/images/energies-16-01306-g005.png)
Energies, Free Full-Text
![Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic](https://www.researchgate.net/publication/252056711/figure/fig3/AS:668909250297868@1536491801543/No-load-back-EMF-of-the-studied-PMSM-at-1000-r-min.png)
No-load back-EMF of the studied PMSM at 1000 r/min.
![Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs00202-023-01894-4/MediaObjects/202_2023_1894_Fig2_HTML.png)
Sensorless control of PMSM based on third harmonic back EMF and SOGI-FLL
![Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic](https://www.frontiersin.org/files/Articles/994629/fenrg-10-994629-HTML/image_m/fenrg-10-994629-g004.jpg)
Frontiers Adaptive fault-tolerant control of five-phase permanent magnet synchronous motor current using chaotic-particle swarm optimization
![Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic](https://www.researchgate.net/publication/271197818/figure/fig2/AS:295151080624131@1447380909337/Relationship-between-back-EMF-and-current-waveform.png)
Relationship between back-EMF and current waveform.
![Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic](https://pub.mdpi-res.com/wevj/wevj-12-00149/article_deploy/html/images/wevj-12-00149-g010.png?1631093020)
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Investigation of the electromagnetic characteristics and operating performance of a bidirectional PM excited machine
![Phase back-EMF at rated speed. (a) Back-EMF voltage. (b) Harmonic](https://www.researchgate.net/publication/224594316/figure/fig4/AS:667633686966281@1536187683695/Electromagnetic-characteristics-a-phase-back-EMF-at-20-000-rpm-b-back-EMF-constant.png)
Electromagnetic characteristics: (a) phase back-EMF at 20,000 rpm; (b)
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