PATENT CLAIM ANALYSIS

Application Number: 15896996
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["318", "400020"]

Abstract:
A system for detecting and eliminating harmonic effects in the DQ plane of the non-sinusoidal back EMF voltages is provided. The system is a field oriented controller (FOC) that includes a poly-phase electric machine, proportional-integral-derivative controllers and a microcontroller. The microcontroller not only analyzes a stator current but analyzes a back electromotive force (BEMF) voltages to extract flux vectors of the EMF. These vectors have distortions as a result of the geometries and saturation effects inherent in the electrical machine. Therefore, the microcontroller corrects these defects by transmitting the BEMF vectors and the machine operating points, including the current rotational speed and current, into the algorithm, which in turn develops a command voltage in the DQ frame for the specific operating point. This command voltage is inserted into the control output of the current PI controller so to prevents the non-sinusoidal back EMF voltages from generating non-sinusoidal currents.

Claim (Index 1):
A system for correcting harmonic distortions in an output from an electrical machine, the electrical machine producing a first electrical output, the system comprising:\n a pair of proportional-integral-derivative controllers, the pair of proportional-integral-derivative controllers receive the first electrical output, the proportional-integral-derivative controllers having a second electrical output; a microcontroller having a model table and a correction algorithm, the microcontroller configured to receive a machine current vector from the electrical machine and configured to receive the first electrical output; and the microcontroller correlates the model table based on the machine current vector and the first electrical output, the microcontroller transmits a first feed forward term and a second feed forward term, each having a correction voltage, wherein, the first feed forward term and the second feed forward term are inserted into the second electrical output of the pair of proportional-integral-derivative controllers such that the correction voltage transmitted by the microcontroller into the second electrical output eliminates the harmonics in the electrical machine.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 88.0
- Lexical Diversity: 1.81111
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13345789', '15461599', '13948330', '14541177', '13914341']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6621140316593018
- 35 USC 102 Novelty (BERT): 0.4925197193433125
- Combined Prediction Score: 0.6451546004277029
- Mean Citation Score: 198.655148
- Max Citation Score: 206.58047
- Similarity Product: 136.54778488903938

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