High-performance Sensorless Control Strategy of High-speed Maglev Based on Nonlinear Extended State Observer and Improved Phase Lock Loop
- Resource Type
- Conference
- Authors
- Sang, Hongyun; Zhang, Ruihua; Ge, Qiongxuan; Cao, Xueqian
- Source
- 2023 14th International Symposium on Linear Drivers for Industry Applications (LDIA) Linear Drivers for Industry Applications (LDIA), 2023 14th International Symposium on. :1-6 Jun, 2023
- Subject
- Engineering Profession
General Topics for Engineers
Simulation
Industry applications
Sensorless control
Observers
Stators
Synchronous motors
Frequency estimation
sensorless
high-speed maglev
nonlinear extend state observer
phase lock loop
long stator linear synchronous motor
- Language
This paper proposes a high-performance sensorless control strategy of high-speed maglev based on nonlinear extended state observer and improved phase lock loop (PLL). A NESO with fast convergence speed and strong anti-disturbance ability is proposed to observe the back electromotive force. A Lyapunov function is designed to prove that the NESO can converge to the equilibrium point in a finite time. A disturbance estimation and compensation term is added to the conventional PLL to achieve zero steady-state error tracking when subjecting to a frequency ramp input. Simulation results show that the angle observation error is less than 0.033 rad at 50 km/h and less than 0.1 rad at 600km/h.