A carrier-based discontinuous space vector modulation for three-level NPC inverter

Piao, Chengzhu; Hung, John Y.

doi:10.1109/iwipp.2015.7295982

Cited by 2 publications

(2 citation statements)

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“…Switching loss is the main factor of power losses, which can restrict the working efficiency [3]. If the power devices have been identified, the switching loss of IGBT can be reduced by changing 7-segment into 5-segment SVPWM [4]. The on-off times can be reduced from 6 to 4 times in a control period, and the reduction rate was 1/3.…”

Section: Introductionmentioning

confidence: 99%

“…In reference [2], the advanced discontinuous 5-segment space vector pulse has lower switching losses compared with the traditional 7-segment. In reference [3] and [4], based on a T-type three-level topology and a three-level neutral-point clamped (NPC) topology, it is shown that the switching losses of IGBT are lower under 5-segment SVPWM by simulation [5]. However, after optimizing the modulation strategy, the actual reduction rates still need to be further specify.…”

Section: Introductionmentioning

confidence: 99%

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Loss Optimization Method Based on the Main Circuit of T-type SVPWM

Changzhi¹,

Geng²,

Gong³

et al. 2018

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To reduce the switching loss of power devices and improve the efficiency, an effective method is to reduce the switching loss by optimizing the modulation strategy of the control algorithm. Traditionally, the amount of on-off times is used to qualitatively estimate the amount of switching losses, but the estimation error is large. In this paper, based on a T-type three-level topology, the 7-segment and 5-segment SVPWM strategies were analyzed theoretically, the calculation methods were set, and an experiment is carried out on a high-power frequency conversion system. It is proved that the reduction amount of switching losses of power devices is not only determined by the reduction amount of switching times under different modulation strategies.

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Section: Introductionmentioning

confidence: 99%