PATENT CLAIM ANALYSIS

Application Number: 15759344
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["290", "044000"]

Abstract:
A multi-loop switching control system for a doubly-fed wind turbine based on logic switch control. Output variables of the doubly-fed wind turbine may be used to form output feedback control channels. Each output feedback control channel may switch between a switch controller and a vector controller to form a multi-loop switching controller. When a power system associated with the doubly-fed wind turbine is subjected to a relatively large external disturbance, state variables and the output variables of the wind turbine deviate from an original balance point, and the output feedback control loops of the doubly-fed wind turbine are switched from the vector controller to the switch controller. Under control of the switch controller, the state variables and output variables return to a vicinity of the original balance point, and the output feedback control loops of the wind turbine are switched from the switch controller to the vector controller.

Claim (Index 18):
The multi-loop switching control system according to  claim 10 , further comprising:\n a switching excitation controller programmed or configured with the following switching strategy: after an occurrence of a disturbance in a power system, an extreme value sequence in an oscillation trajectory of the absolute value |e(t)| of an output signal of the plurality of output signals is \u0393(t)={\u0393 1 , \u0393 2 , . . . , \u0393 j }, where \u0393 s =(s\u2208{1, 2, . . . , j}) is a maximum value in a sequence \u0393(t), and wherein the switching strategy of a feedback control channel of the plurality of feedback control channels is the following: when switching condition 1 is met, the feedback control channel is switched from a vector controller to a switch controller, and when switching condition 2 is met, the feedback control channel is switched from the switch controller to the vector controller, wherein switching condition 1 is met when |e(t) \u03c9 ; and switching condition 2 is met when a switching frequency of the switching excitation controller satisfies a maximum value defined by {{\u0393 s \u2212\u0393 j )/\u0393 s \u2265\u03c4}\u2227{e(t) converges to [2(\u03c6 0 \u2212 +\u03b5 0 \u2212 ), 2(\u03c6 0 + \u2212\u03b5 0 + )]}}, where  \u03c9  and \u03c4 are parameters of the switching excitation controller.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 90.0
- Lexical Diversity: 2.75439
- Patent Class: 290.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12996046', '11647124', '11477593', '13218311', '12293309']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.614576815174872
- 35 USC 102 Novelty (BERT): 0.5334059529021687
- Combined Prediction Score: 0.6064597289476016
- Mean Citation Score: 335.148848
- Max Citation Score: 342.86636
- Similarity Product: 190.75704847505568

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test