Combined Flux Observer With Signal Injection Enhancement for Wide Speed Range Sensorless Direct Torque Control of IPMSM Drives

2008 ◽  
Vol 23 (2) ◽  
pp. 393-402 ◽  
Author(s):  
G.-D. Andreescu ◽  
C.I. Pitic ◽  
F. Blaabjerg ◽  
I. Boldea
Keyword(s):  
Direct Torque Control ◽  
Torque Control ◽  
Flux Observer ◽  
Speed Range ◽  
Signal Injection ◽  
Wide Speed Range

scholarly journals Wide-Speed Range Sensorless Control of an IPM Motor for Multi-Purpose Applications

Inventions ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 24
Author(s):  
Maria Laura Bacci ◽  
Ferdinando Luigi Mapelli ◽  
Stefano Mossina ◽  
Davide Tarsitano ◽  
Michele Vignati
Keyword(s):  
Permanent Magnet Synchronous Machine ◽  
Mechanical Reliability ◽  
High Frequency Signal ◽  
Constant Torque ◽  
High Speeds ◽  
Speed Range ◽  
Interior Permanent Magnet ◽  
Signal Injection ◽  
Space Cost ◽  
Wide Speed Range

In a growing number of battery-driven applications the need of removing any position and speed transducer is taking over due to space, cost and mechanical reliability constraints, further than making the installation easier as requiring less wiring. This paper presents the development of a sensorless algorithm capable of running an Interior Permanent Magnet Synchronous Machine (IPMSM), assuring constant torque production in the whole speed range, form standstill to high speeds. This is achieved with an hybrid method: at standstill and very low speeds the saliency of the IPM is exploited through an High Frequency Signal Injection (HFSI), which assures a robust estimation of the rotor position. At medium to high speeds an advanced V-I estimator is adopted in order to enhance the motor performances. The developed algorithm comes out of being highly scalable as it requires very little tuning, resulting in a multi-purpose application which can be employed with any motor size.

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