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A CONTRIBUTION TO THE PROBLEM OF NEUTRAL-POINT VOLTAGE BALANCING IN THREE LEVEL NPC INVERTER
This paper presents a control method for balancing the capacitor voltage of three-level neutral-point-clamped converters (NPC). This control method overcomes one of the main problems of this converter, which is the low frequency voltage oscillation that appears in the neutral point. The algorithm is based on a carrier-based PWM. Studying a offset voltage to have optimal results in relation to power factor and modulation index is a matter of...
7 p hcmute 14/06/2017 328 1
Từ khóa: neutral point clamped converter, offset, modulation index, balancing time, THD
A CONTRIBUTION TO THE PROBLEM OF NEUTRAL-POINT VOLTAGE BALANCING IN THREE LEVEL NPC INVERTER
This paper presents a control method for balancing the capacitor voltage of three-level neutral-point-clamped converters (NPC). This control method overcomes one of the main problems of this converter, which is the low frequency voltage oscillation that appears in the neutral point. The algorithm is based on a carrier-based PWM. Studying a offset voltage to have optimal results in relation to power factor and modulation index is a matter of...
7 p hcmute 16/11/2016 395 1
Từ khóa: neutral point clamped converter, offset, modulation index, balancing time, THD.
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