PATENT CLAIM ANALYSIS

Application Number: 15933856
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-06
Patent Classification: ["322", "032000"]

Abstract:
An AC excitation synchronous condenser and a control method, an AC-excitation induction machine, a full-controlled AC excitation converter, a grid-side converter and a controller. The AC-excitation induction machine is the core power converting device, and its stator and rotor windings are AC windings with terminals. The controller is configured to control the full-controlled AC excitation converter to perform excitation and speed regulation on the AC-excitation induction machine and also control the grid-side converter to ensure the excitation capability of the full-controlled AC excitation converter, so that support and regulation of the active power and reactive power are achieved.

Claim (Index 4):
A control method for the AC excitation synchronous condenser, comprising:\n S 1 : obtaining a corresponding reactive power command Q* from the superior command or the local control according to a preset working mode; S 2 : obtaining a rotating speed command \u03c9* r  according to information about a frequency of the local power grid and a motor speed; S 3 : obtaining a rotor reactive current command I* rq  according to deviation between a measured reactive power of the local power grid and the reactive power command; S 4 : obtaining a rotor active current command I* rd  according to deviation between a measured rotating speed of the AC-excitation induction machine and the rotating speed command; S 5 : limiting and allocating the dynamic active current command and reactive current command according to the capacity of the full-controlled AC excitation converter, and obtaining an excitation voltage command for the full-controlled AC excitation converter, so that the full-controlled AC excitation converter performs independent excitation of the AC-excitation induction machine; and S 6 : calculating an active current command for the grid-side converter according to deviation between a measured DC bus voltage and the DC bus voltage command, and obtaining a control voltage command for the grid-side converter, so as to maintain the stability of the DC bus voltage, so that it is ensured that the full-controlled AC excitation converter has sufficient excitation control capability.

Metadata:
- Claim Count in Document: 16.0
- Percentile: 90.0
- Lexical Diversity: 2.16327
- Patent Class: 322.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13638546', '12979030', '16313951', '14323380', '14314484']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6567920634972451
- 35 USC 102 Novelty (BERT): 0.5440440446609466
- Combined Prediction Score: 0.6455172616136152
- Mean Citation Score: 275.74293800000004
- Max Citation Score: 327.39853
- Similarity Product: 242.47649982923863

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