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 Tools annual

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 Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

This paper proposes two new “disturbance-observers in the Dmodule” for sensorless drive of synchronous motors including permanent-magnet synchronous motors and synchronous reluctance motors. The disturbance filter for the observers can estimate speedvarying rotor-phase (in other words, rotor-position) with zero phaselag. It is constructed by means of “the filter in the D-module”, which has the following desired characteristics for variable sensorless drive: 1) it makes distinction between positive and negative frequencies of two-phase signals; 2) it can allow to process the signals based on frequency polarities; 3) it can also change dynamically its center frequency of band-pass filtering according to rotor speed estimates; 4) its passband and transition can be designed independently; and 5) it can be easily realized. The new disturbanceobservers also have a generality such that they contain the recently proposed disturbance-observer as a special case. Consider a single-input/output n-th order stable filter such as

&ldquo;Disturbance-Observers in the D-Module&rdquo; for Sensorless Drive of Synchronous Motors

“Disturbance-Observers in the D-Module” for Sensorless Drive of Synchronous Motors