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- W763449781 abstract "To address the neutral point voltage balance problem of the diode clamped three-level inverter, this paper analyzes the causes of unbalanced neutral point voltage and studies the impact of the carriers' overlap on the neutral point voltage. A simple neutral point voltage control scheme using carrier overlapping sinusoidal pulse width modulation (SPWM) is proposed. The proposed scheme does not change the modulation waves, the amplitude of one carrier is increased to overlap the other carrier, and the neutral point voltage can be maintained balance by increasing the carriers’ amplitudes. The influence of the vertical overlap of carriers on neutral point balance is investigated in depth. The relationship among the neutral point voltage variation, modulation index, overlap of the carriers, and power factor is discussed in this paper. Simulation results show the neutral point voltage balancing control strategy based on SPWM is effective. Streszczenie. W artykule omowiono mozliwe przyczyny niezbalansowania napiecia punktu neutralnego w przeksztaltniku z diodami poziomującymi oraz wplyw na to napiecie nakladania sie fal nośnych w modulacji. W przedstawionym schemacie modulacji nakladanie sie fal jest wynikiem zwiekszenia amplitudy jednej z tych fal. Przedstawiono dyskusje wplywu proponowanej techniki na zmiany napiecia punktu neutralnego oraz zalezności miedzy wspolczynnikiem modulacji, stopniem nakladania sie fal i wspolczynnikiem mocy. Wyniki badan symulacyjnych potwierdzają skutecznośc dzialania. (Prosta struktura modulacji SPWM z nakladającymi sie falami nośnymi do balansowania napieciem punktu neutralnego w przeksztaltniku trojpoziomowym)" @default.
- W763449781 created "2016-06-24" @default.
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- W763449781 date "2012-01-01" @default.
- W763449781 modified "2023-09-26" @default.
- W763449781 title "Simple Three-level Neutral Point Voltage Balance Control Scheme Based on Carrier Overlapping SPWM" @default.
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