Sentence examples for negative sequence model from inspiring English sources

The main reason is that not only positive sequence model, but also negative sequence model and the VSG model should be jointly considered for the unbalanced grid.

In [3], a digital technique for detecting internal faults in the stator windings of synchronous machine, using positive- and negative-sequence models of the SG, has been introduced.

Particularly, in [21, 22], the positive and negative sequence impedance model is proposed in a static frame and then can be applied in stability analysis.

A new control model of negative sequence voltage without current sensors based on instantaneous power balancing algorithm is deduced.

For negative instances, specificity results indicated that: (1) the sequence model was the best one in three single feature models; (2) the hybrid model was comparable to the best single feature model (the sequence model) and worse than the control model.

The detailed steps to obtain the admittance model by harmonic linearization considering the effect of the negative sequence voltage at the fundamental frequency are shown in Fig. 6.

This paper proposes a step-by-step modeling method to calculate the matrix of positive and negative sequence admittances of three-phase grid-connected converters under unbalanced grid voltage conditions, based on the method of harmonic linearization.

When both positive and negative instances were considered, the accuracy results showed that: (1) among single feature models, the sequence model outperformed the other two for TFBS recognition; (2) the hybrid model was comparable to the best single feature model (the sequence model) and surpassed the control one.

There are nine EHV transmission lines in the power network, and each is modeled as a distributed parameter block with the following positive and negative sequence parameters: R = 0.0234 Ω/km, L = 95.1 mH/km, C = 1.24uF/km.

V-Sq negative sequence voltage.

Accordingly, negative containment is first defined to determine whether a data sequence contains a negative sequence based on set theory.