Simple three-level neutral point voltage balance control strategy based on SVPWM

• Autorzy: Bo G. , Shanmei Ch. , Yi Q.
• Języki publikacji: EN

Abstrakty

EN

The unbalance of the neutral point voltage is an inherent problem of three-level neutral-point-clamped (NPC) inverter, the effect of neutral point voltage balancing which is caused by voltage vector is analyzed, and the relationship of the voltage offset and neutral point voltage is studied in this paper. This paper proposes a novel neutral point balance strategy for three-level NPC inverter based on space vector pulse width modulation (SVPWM). A voltage offset is added to the modulation wave, and a closed-loop neutral point voltage balance control system is designed. In the control system, the dwelling time of synthesis voltage vectors for SVPWM is varied to solve the problem of the unbalance of the neutral point voltage, the sequence of the voltage vectors maintains unchanging. Simulation and experimental results show the neutral point voltage balancing control strategy based on SVPWM is effective.

Słowa kluczowe

EN

space vector; neutral point voltage; voltage offset; PWM

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2013
• Tom: Vol. 62, nr 1
• Strony: 15--23
• Opis fizyczny: Bibliogr. 9 poz., tab., rys.

Twórcy

autor

Bo G.

autor

Shanmei Ch.

autor

Yi Q.

• Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan, China,

Bibliografia

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