Maximum Torque per Ampere Sensorless Control of SynRM Based on Mixed Signal Injection and Extended Back-EMF

2021 ◽  
Author(s):  
Chengrui Li ◽  
Qinan Ni ◽  
Hanlin Zhan ◽  
Bing Li ◽  
Gaolin Wang ◽  
...  
Keyword(s):  
Sensorless Control ◽  
Maximum Torque ◽  
Mixed Signal ◽  
Signal Injection ◽  
Maximum Torque Per Ampere

scholarly journals Adaptive Backstepping Based MTPA Sensorless Control of PM-Assisted SynRM with Fully Uncertain Parameters

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Yang Yu ◽  
Da Chang ◽  
Xiaoming Zheng ◽  
Zengqiang Mi ◽  
Xiaolong Li ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Sensorless Control ◽  
Uncertain Parameters ◽  
Strong Nonlinearity ◽  
Adaptive Backstepping ◽  
Maximum Torque ◽  
Synchronous Reluctance Motor ◽  
Control Scheme ◽  
Reluctance Motor ◽  
Maximum Torque Per Ampere

A nonlinear and robust adaptive backstepping based maximum torque per ampere speed sensorless control scheme with fully uncertain parameters is proposed for a permanent magnet-assisted synchronous reluctance motor. In the design of the controller, the relation to d-q-axis currents constrained by maximum torque per ampere control is firstly derived. Then, a fully adaptive backstepping control method is employed to design control scenario and the stability of the proposed control scenario is proven through a proper Lyapunov function candidate. The derived controller guarantees tracking the reference signals of change asymptotically and has good robustness against the uncertainties of motor parameters and the perturbation of load torque. Moreover, in allusion to the strong nonlinearity of permanent magnet-assisted synchronous reluctance motor, an active flux based improved reduced-order Luenberger speed observer is presented to estimate the speed. Digital simulations testify the feasibility and applicability of the presented control scheme.

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