PATENT CLAIM ANALYSIS

Application Number: 16180231
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["363", "041000"]

Abstract:
A control method of an inverter for outputting polyphase alternate-current electrical power is provided. In the control method, modified PWM pulses of respective phases for controlling semiconductor switching elements of the inverter are generated, based on an output of a counter common to the respective phases. Each of the modified PWM pulses is configured such that a total pulse width, in a period corresponding to one or more cycles of a carrier, is substantially equal to a total pulse width of an assumed PWM pulse which is obtained by comparing, with the carrier, a time average value of an output voltage of the corresponding phase in the period. Further, at least one of a generation timing and a generation frequency of at least one of the modified PWM pulses is changed from the assumed PWM pulse.

Claim (Index 8):
The method according to  claim 1 , wherein\n the inverter is a three-phase inverter including the three series circuits; and in the generating of the modified PWM pulses, a converted voltage command value for a predetermined period within a cycle of the carrier and a converted voltage command value for a remaining period within the cycle of the carrier are used for each phase as the output voltage command value, the converted voltage command value for the predetermined period and the converted voltage command value for the remaining period being generated by increasing or decreasing an original voltage command value used for causing the three-phase inverter to output a target voltage, such that a time average value of the converted voltage command value during the cycle of the carrier becomes equal to the original voltage command value; wherein\n in a case in which magnitude of the carrier is not less than 0 and not more than 1, the converted voltage command values of respective three phases (D UA , D VA , and D WA ) generated by increasing the original voltage command values and the converted voltage command values of the respective three phases (D UB , D VB , and D WB ) generated by decreasing the original voltage command values are expressed by following formulas:\n D UA =A U \u00b7D U  (if 1\u2264 A U \u00b7D U , D UA =1) \n D UB =2 D U \u2212D UA  \n D VA =A V \u00b7D V  (if 1\u2264 A V \u00b7D V , D VA =1) \n D VB =2 D V \u2212D VA  \n D WA =A W \u00b7D W  (if 1\u2264 A W \u00b7D W , D WA =1) \n D WB =2 D W \u2212D WA  \n \n wherein D U , D V , and D W  are the original voltage command values of the respective three phases, \n A U , A V , and A W  are selectable ratios defined for the respective three phases, \n and 0\u2264D U , D V , D W \u22641.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 98.0
- Lexical Diversity: 2.0137
- Patent Class: 363.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12991630', '16164920', '15956178', '15041413', '12596534']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8456549652322786
- 35 USC 102 Novelty (BERT): 0.4998715675359049
- Combined Prediction Score: 0.8110766254626411
- Mean Citation Score: 273.498192
- Max Citation Score: 284.64352
- Similarity Product: 232.58489754735947

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