A Discontinuous PWM Method for Balancing the Neutral Point Voltage in Three-Level Inverter-Fed Variable Frequency Drives

被引：47

作者：

Ben-Brahim, Lazhar ^{[1
]}

机构：

[1] Qatar Univ, Dept Elect Engn, Coll Engn, Doha, Qatar

来源：

IEEE TRANSACTIONS ON ENERGY CONVERSION | 2008年 / 23卷 / 04期

关键词：

Discontinuous pulsewidth modulation; energy saving; gate turn-off thyristor (GTO); neutral point clamped (NPC); neutral point (NP) voltage; pulsewidth modulation (PWM); three-level inverter; variable frequency drives (VFD);

D O I：

10.1109/TEC.2008.2001435

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 [动力工程及工程热物理]; 0820 [石油与天然气工程];

摘要：

The paper describes a new discontinuous carrier-based pulsewidth modulation (PWM) method for use in variable frequency drives (VFD) driven by three-level inverters. The method introduces three different switching patterns for the full range of operating speeds. Depending on the actual operating speed, the proposed algorithm is developed to select the most suitable PWM switching pattern that improves the VFD performance. This results in low imbalance in the de-link capacitor voltage, and low current distortions without increasing switching losses. Theory, simulation, and experimental results are presented.

引用

收藏

页码：1057 / 1063

页数：7

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