English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Interior permanent magnet synchronous machine drives are widely employed inelectric traction systems and various industrial processes. However, prolongedexposure to high temperatures while operating can demagnetize the permanentmagnets to the point of irreversible demagnetization. In addition, directmeasurements with infrared sensors or contact-type sensors with wirelesscommunication can be expensive and intrusive to the motor drive systems. Thispaper thus proposes a nonintrusive thermal monitoring scheme for the permanentmagnets inside the direct-torque-controlled interior permanent magnetsynchronous machines. By applying an external high-frequency rotating flux ortorque signal to the hysteresis torque controller in the motor drive, thehigh-frequency currents can be injected into the stator windings. The permanentmagnet temperature can thus be monitored based on the induced high-frequencyresistance. The nonintrusive nature of the method is indicated by theelimination of the extra sensors and no hardware change to the existing system.Finally, the effectiveness of the proposed method is validated withexperimental results.

Rotor Thermal Monitoring Scheme for Direct-Torque-Controlled Interior  Permanent Magnet Synchronous Machines via High-Frequency Rotating Flux or  Torque Injection