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Research article Open access

Improved ADRC-Based Integral Flux Observer for IPMSM Sensorless Control

RAHMAN SADIQ UR, Mahmood Ul Hassan, Muhammad Fahad · The Journal of Engineering Research · 2025 · 10.53540/tjer.vol21iss2pp163-172

… the drift from the estimated flux, as evidenced by theoretical analysis, has no detrimental effect on the amplitude or phase angle of the fundamental waveform. The validity of the proposed improved ADRC-based integral flux observer is verified by sensorless vector control of a 7.5 [kW] three-phase IPMSM motor via exten …

Research article Open access

Transition of Gas-Liquid Stratified Flow in Oil Transport Pipes

D. Lakehal, Mathieu Labois, D. Caviezel et al. · The Journal of Engineering Research · 2011 · 10.24200/tjer.vol8iss2pp49-58

… the secondary wave modes created by the action of gas shear (short waves) with the first wave mode (high amplitude long wave). The model is capable of predicting global flow features like the onset of slugging and slug speed. In the second test case, the model predicts different kinds of slugs, the so-called operating …

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