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 11):
The multi-loop switching control system according to  claim 10 ,\n wherein the rotor speed control loop switching control unit is configured to control a switching action between the rotor speed control loop and the rotor speed switch control loop; wherein the rotor speed control loop is configured to, when the rotor speed control loop switching control unit switches to the rotor speed control loop, provide a control voltage based on the rotor speed deviation signal; wherein the rotor speed switch control loop is configured to, when the rotor speed control loop switching control unit switches to the rotor speed switch control loop, provide a control voltage based on the rotor speed deviation signal; wherein the reactive power control loop switching control unit is configured to control a switching action between the stator reactive power control loop and the stator reactive power switch control loop; wherein the stator reactive power control loop is configured to, when the stator reactive power control loop switching control unit switches to the stator reactive power control loop, provide a control voltage based on the stator reactive power output error; wherein the stator reactive power switch control loop is configured to, when the stator reactive power control loop switching control unit switches to the stator reactive power switch control loop, provide a control voltage based on the stator reactive power output error; wherein the converter capacitor voltage control loop switching control unit is configured to control a switching action between the converter capacitor voltage control loop and the converter capacitor voltage switch control loop; wherein the converter capacitor voltage control loop is configured to, when the converter capacitor voltage control loop switching control unit switches to the converter capacitor voltage control loop, provide a control voltage based on the converter capacitor voltage deviation; wherein the converter capacitor voltage switch control loop is configured to, when the converter capacitor voltage control loop switching control unit switches to the converter capacitor voltage switch control loop, provide a control voltage based on the converter capacitor voltage deviation; wherein the grid-side converter reactive power control loop switching control unit is configured to control a switching action between the grid-side converter reactive power control loop and the grid-side converter reactive power switch control loop; wherein the grid-side converter reactive power control loop is configured to, when the grid-side converter reactive power control loop switching control unit switches to the grid-side converter reactive power control loop, provide a control voltage based on the grid-side converter reactive power output error; wherein the grid-side converter reactive power switch control loop is configured to, when the grid-side converter reactive power control loop switching control unit switches to the grid-side converter reactive power switch control loop, provide a control voltage based on the grid-side converter reactive power output error.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 90.0
- Lexical Diversity: 2.75439
- Patent Class: 290.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12996046', '11647124', '11477593', '13218311', '12293309']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6420442015846111
- 35 USC 102 Novelty (BERT): 0.5329385711890304
- Combined Prediction Score: 0.631133638545053
- Mean Citation Score: 335.148848
- Max Citation Score: 342.86636
- Similarity Product: 232.8049573752737

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

Dataset: test