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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This paper proposes a novel feedback control loop based on a damping control in a V/f control in order to stabilize interior permanent magnet synchronous motors (IPMSMs) with a long electrical time constant. A problem of the conventional damping control is that ignored roots move to the unstable region due to the conventional damping gain K1. In addition, the ignored roots are apt to become unstable because of its long electrical time constant. Therefore, a novel method is proposed in order to solve this instability problem. In this paper, first, a boundary condition of stable region is derived based on state equation. Then, a novel current feedback loop of the current is added to an output voltage command. As experimental results, the motor becomes unstable with the conventional damping control under a rated speed of 0.9p.u. and a rated torque of 0.7p.u. Under the common operation condition, the motor is stabilized by employing the novel feedback control loop.

Stabilization Method for IPMSM with Long Electrical Time Constant Using Equivalent Resistance Gain Based on V/f Control