Apparatus and method for rotating-sensor-less identification of magneto-mechanical parameters of an AC synchronous motor

US8587250B2 · kind B2 · utility

Assignee

• Baumueller Nuernberg GmbH · DE

Inventors

• Sebastian Villwock · Pechbrunn, DE
• Heiko Zatocil · Koblenzer Straße, DE

Key dates

• Filing date: Aug 9, 2011
• Grant date: Nov 19, 2013
• Expiry date: Mar 8, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02P2207/05
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A method for the identification without a shaft encoder of magnetomechanical characteristic quantities, in particular the mass moment of inertia J and the permanent magnetic flux ψPM between rotor and stator of a three-phase synchronous motor, comprising:—constant voltage supply U1d in the d flux axial direction;—test signal voltage supply U1q in the q transverse flux axial direction;—measuring signal current measuring I1q of the q transverse flux axial direction;—identification of magnetomechanical characteristic quantities of the synchronous motor on the basis of the test signal voltage U1q and of the measuring signal current I1q; whereby the rotor can execute deflection movements with pre-definable maximal amplitudes. Method use also for control of electrical drives. An identification apparatus for determination of magnetomechanical characteristic quantities (79) of a synchronous motor (09) that also relates to a motor control device, whereby the identified characteristic quantities can be used for the determination, optimization and monitoring of a motor control.