PATENT CLAIM ANALYSIS

Application Number: 16180636
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-10
Patent Classification: ["363", "041000"]

Abstract:
A sinusoidal modulation method and a three-phase inverter are disclosed. A pulse driving signal controller is disposed to connect the three-phase inverter. The pulse driving signal controller controls the transistors of the three-arm full-bridge architecture. By examining the phase angle of the output current, operations of the upper and lower bridge power transistors can be adjusted, so that three power transistors are turned on and the other three power transistors are turned off during the PWM operations. As a result, the dead time is not required to set during the PWM operation for preventing a short-circuit due to dynamic switching errors of the upper and lower bridge power transistors. The requirements of the hardware circuits can be also reduced.

Claim (Index 1):
A sinusoidal modulation method, adapted to a three-phase inverter comprising three phase arms, wherein each of the three phase arms comprises two bridge arms controlled by a lower bridge transistor and an upper bridge transistor, respectively, and the sinusoidal modulation method comprises:\n disposing a pulse driving signal controller electrically connected to the upper bridge transistors and the lower bridge transistors of the three phase arms; inputting a phase angle and a triangular carrier wave, and calculating duty cycles corresponding to the three phase arms, respectively, according to a modulation index, the phase angle and the triangular carrier wave; for each of the three phase arms, determining, by using the pulse driving signal controller, whether a sinusoidal control signal corresponding to the phase angle is positive, wherein when the sinusoidal control signal corresponding to the phase angle is positive, the upper bridge transistor is turned on and the lower bridge transistor is turned off, and when the sinusoidal control signal corresponding to the phase angle is not positive, the upper bridge transistor is turned off and the lower bridge transistor is turned on, so that the upper bridge transistor and the lower bridge transistor in each of the three phase arms are turned-on in one half period and turned-off in the other half period for each sinusoidal cycle; for each of the three phase arms, under a condition that the upper bridge transistor is turned on, determining, by using the pulse driving signal controller, whether the duty cycle is higher than the triangular carrier wave, wherein when the duty cycle is higher than the triangular carrier wave, an upper bridge turn-on signal is outputted to the upper bridge transistor, and when the duty cycle is not higher than the triangular carrier wave, an upper bridge turn-off signal is outputted to the upper bridge transistor; and for each of the three phase arms, under a condition that the lower bridge transistor is turned on, determining, by using the pulse driving signal controller, whether the duty cycle is higher than the triangular carrier wave, wherein when the duty cycle is higher than the triangular carrier wave, a lower bridge turn-off signal is outputted to the lower bridge transistor, and when the duty cycle is not higher than the triangular carrier wave, a lower bridge turn-on signal is outputted to the lower bridge transistor.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 98.0
- Lexical Diversity: 1.80282
- Patent Class: 363.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13121044', '13311592', '13055610', '11570639', '14140922']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7838063976941161
- 35 USC 102 Novelty (BERT): 0.4843903809052207
- Combined Prediction Score: 0.7538647960152266
- Mean Citation Score: 212.47095
- Max Citation Score: 218.55324
- Similarity Product: 173.45890218585492

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test