Exact(2)
The estimates of unknown load torque and time-varying rotor speed converge to the corresponding true values under a persistency of excitation condition with a physically meaningful interpretation, basically equivalent to non-null synchronous frequency.
Two other methods are proposed in [53, 54, 55, 56] for DFIGs and PMSGs by adding an incremental active power based on the MPPT curve or torque limit curve to enable the rotor speed converge to a stable point when TOP ends.
Similar(58)
3. White demons (or angels), blurred by speed, converging on a corpse.
Once the correct vector support is determined, the speed of converge is fast.
Second, they have slow progress in terms of fitness function in some situations (slow speed to converge to the target locations).
As shown in Fig. 9, the swimming speed almost converged to a constant value as time passed, and the average value was 0.12 m/s.
Meanwhile, f merges a decrease trend and the speed for converging to the optimum solution will continue to be accelerated gradually, which reduce the risk of falling into local convergence.
Thus the sequence ((zeta_{n}(s))_{ngeq1}) converges with speed of convergence (n^{1-s}).
And foreign sales are bound to fall again as America stagnates and a two-speed Europe converges on a single, slower pace.Falling export orders was one of the complaints voiced by Chinese manufacturers in a preliminary survey of purchasing managers published by HSBC last week.
It can be observed that the algorithm has fast convergence speed since that it converges in several iterations, and the performance of the proposed MLE is close to the CRB and significantly outperforms the moment-based estimator (k=0).
This induces low converge speed or hard to converge, respectively.
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