Influence of speed EMF on position estimation error in carrier signal injection based sensorless control of PMSM

Author

Jianmin Wang ; Jianwei Gao

Author_Institution

Sch. of Electr. Eng., Shandong Univ., Jinan, China

fYear

2012

fDate

21-24 Oct. 2012

Firstpage

1

Lastpage

6

Abstract

The paper analyzes the influences of the speed EMF on rotor position estimation errors in high-frequency-signal-injection-based sensorless control of PMSM. Expressions of high frequency carrier current induced by the carrier voltage are derived for both rotating voltage injection and pulsating voltage injection method when the stator resistance and speed EMF terms are all taken into account. Then position estimation error expressions are deduced, and the influences of the speed EMF on the position estimation errors are discussed. Finally, simulation investigations are conducted. Simulation results confirm the theoretical ones.

Keywords

permanent magnet motors; sensorless machine control; synchronous motors; velocity control; PMSM; carrier signal injection based sensorless control; high-frequency-signal-injection-based sensorless control; position estimation error; pulsating voltage injection method; speed EMF; Estimation error; Permanent magnet motors; Resistance; Rotors; Stator windings; Steady-state; high frequency carrier signal injection; influence of speed EMF; position estimation error; sensorless control of permanent magnet synchronous motor;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2012 15th International Conference on

Conference_Location

Sapporo

Print_ISBN

978-1-4673-2327-7

Type

conf

Filename

6401716