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 10):
The control method of  claim 4 , wherein the step S 6  specifically includes the following steps:\n S 601 : receiving a DC bus voltage command U* dc  and obtaining a measured DC bus voltage U dc ; \n S 602 : according to a maximum active current command I* gd max  and a minimum active current command I* gd min  that are preset and output from the grid-side converter, obtaining an active current command I gd  output from the grid-side converter through proportional-integral operation, in which the active current command I* gd  output from the grid-side converter is calculated by the following formula: \n I gd * \ue89e { I gdmin * I gd * < I gdmin * K p \ue89e \ue89e V \ue8a0 ( U dc - U dc * ) + K iV \ue89e \u222b ( U dc - U dc * ) \ue89e dt I gdmax * > I g \ue89e d * > I gdmin * I gdmax * I g \ue89e d * > I gdmax * , where K pV  represents a proportional coefficient of a DC voltage regulator, and K iV  represents an integration coefficient of the DC voltage regulator;\n S 603 : obtaining an active current I gd  and a reactive current I gq  output from the grid-side converter, a d-axis component U gd  and a q-axis component U gq  of a voltage at the access point of the grid-side converter and a power grid voltage angular velocity \u03c9 1 ; and \n S 604 : according to a resistance R g  and an inductance L g  of a filter in the grid-side converter, obtaining a d-axis component U* gd  and a q-axis component U* gq  of a control voltage command for the grid-side converter, in which the d-axis component U* gd  and the q-axis component U* gq  of the control voltage command for the grid-side converter are calculated by the following formulas: \n { U gd * = K pig \ue8a0 ( I gd * - I gd ) + K iig \ue89e \u222b ( I gd * - I gd ) \ue89e dt + R g \ue89e I gd + U gd - \u03c9 1 \ue89e L g \ue89e I gq U gq * = K pig \ue8a0 ( I gq * - I gq ) + K iig \ue89e \u222b ( I gq * - I gq ) \ue89e dt + R g \ue89e I gq + U gq + \u03c9 1 \ue89e L g \ue89e I gd , where K pig  represents a proportional coefficient of a grid-connected current controller of the grid-side converter, and K iig  represents an integration coefficient of the grid-connected current controller of the grid-side converter.

Metadata:
- Claim Count in Document: 16.0
- Percentile: 90.0
- Lexical Diversity: 2.16327
- Patent Class: 322.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13638546', '12979030', '16313951', '14323380', '14314484']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6829727007928817
- 35 USC 102 Novelty (BERT): 0.5490628083628127
- Combined Prediction Score: 0.6695817115498748
- Mean Citation Score: 275.74293800000004
- Max Citation Score: 327.39853
- Similarity Product: 216.3015614559251

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