Online thermal parameter identification for permanent magnet synchronous machines

Parameter Identification of Permanent-magnet Synchronous Motors for Sensorless Control

An online parameter identification method is proposed for sensorless control for surface and interior permanent-magnet synchronous motors (SPMSMs and IPMSMs, respectively). As this method does not use rotor position or velocity to identify motor parameters, the identified parameters are not affected by position estimation error under sensorless control. The proposed method that is based on syst...

Dynamic Motor Parameter Identification for High Speed Flux Weakening Operation of Brushless Permanent Magnet Synchronous Machines

An experimental investigation is conducted to determine the behaviour of brushless PM synchronous machine parameters in the high speed flux weakening operating range. Real-time operating characteristics are determined for two commercially available 4 N·m interior PM synchronous machines. Special computer assisted measuring techniques are employed using an experimental vector controlled drive, c...

Online State Space Model Parameter Estimation in Synchronous Machines

The purpose of this paper is to present a new approach based on the Least Squares Error method for estimating the unknown parameters of the nonlinear 3rd order synchronous generator model. The proposed method uses the mathematical relationships between the machine parameters and on-line input/output measurements to estimate the parameters of the nonlinear state space model. The field voltage is...

Position/speed Sensorless Control for Permanent-magnet Synchronous Machines

Computer Based Motor Parameter Determination for High Speed Operation of Permanent Magnet Synchronous Machines

A method is presented which allows for the experimental determination of the characteristics of brushless PM synchronous machine parameters in the high speed operating range. The theory and real-time implementation is described for this computer based parameter identification method. Special computer assisted measuring techniques are conducted on a laboratory test setup, used to drive a commerc...