A new combined adaptive flux observer with HF signal injection for sensorless direct torque and flux control of matrix converter fed IPMSM over a wide speed range

2010 ◽  
Author(s):  
Dan Xiao ◽  
Gilbert Foo ◽  
M. F. Rahman
Keyword(s):  
Matrix Converter ◽  
Flux 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.

scholarly journals Wide Speed Range Operation Strategy of Indirect Matrix Converter–Surface Mounted Permanent Magnet Synchronous Motor Drive

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2277
Author(s):  
Nuofan Zou ◽  
Yan Yan ◽  
Tingna Shi ◽  
Peng Song
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Matrix Converter ◽  
Modulation Method ◽  
Motor Drive ◽  
Speed Range ◽  
Synchronous Motor Drive ◽  
Wide Speed Range ◽  
Flux Weakening

In order to expand the speed range for an indirect matrix converter–surface mounted permanent magnet synchronous motor drive (IMC-SPMSM), a wide speed range operation control strategy based on a flux-weakening control and an over-modulation method is proposed in this paper. In the stage of the inverter, an IMC over-modulation method is designed, which increases the fundamental voltage transmission ratio (VTR) to 1. In addition, considering the variation of the voltage limit boundary of the IMC with motor speed, flux-weakening control is implemented based on the voltage error feedback method, which maximizes the voltage utilization rate by setting the endpoint of the output voltage vector on the voltage boundary during the flux-weakening operation. In the stage of the rectifier, over-modulation is automatically switched on or off according to operation requirements by a modulation depth controller. Finally, experimental results show that the proposed strategy increases the maximum speed of the IMC-SPMSM by nearly 35% compared to the maximum torque per ampere (MTPA) method. Besides, the enlarged voltage margin by the rectifier stage over-modulation effectively shortens the setting time.

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